diff --git a/workflows/ilp/db/package_data.json b/workflows/ilp/db/package_data.json
index 7a45352ca22b49488ee5a1387f4abb3ca8021bc8..bc5c91bcf67cbc039077fd77a1e5dad2133530fb 100644
--- a/workflows/ilp/db/package_data.json
+++ b/workflows/ilp/db/package_data.json
@@ -1,6 +1,6 @@
 [
   {
-    "pk": 20, 
+    "pk": 19, 
     "model": "workflows.category", 
     "fields": {
       "uid": "ed859be5-cc13-46b9-b249-c8f026732c1c", 
@@ -12,10 +12,10 @@
     }
   }, 
   {
-    "pk": 111, 
+    "pk": 102, 
     "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 20, 
+      "category": 19, 
       "treeview_image": "", 
       "name": "Aleph", 
       "is_streaming": false, 
@@ -27,6 +27,7 @@
       "post_interact_action": "", 
       "user": null, 
       "visualization_view": "", 
+      "streaming_visualization_view": "", 
       "action": "ilp_aleph", 
       "wsdl_method": "", 
       "wsdl": "", 
@@ -37,10 +38,10 @@
     }
   }, 
   {
-    "pk": 211, 
+    "pk": 188, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "mode", 
       "short_name": "mod", 
       "uid": "00b174f3-250d-4c47-9a60-b515e5260e0c", 
@@ -55,80 +56,80 @@
     }
   }, 
   {
-    "pk": 67, 
+    "pk": 62, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "8e5631e5-6497-4720-9e26-5936619caf5c", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce", 
       "name": "induce"
     }
   }, 
   {
-    "pk": 68, 
+    "pk": 63, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "92f66b17-02fd-4bb6-b4cb-03bb54b403f6", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_constraints", 
       "name": "induce_constraints"
     }
   }, 
   {
-    "pk": 69, 
+    "pk": 64, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "ce82b005-81e4-4997-80c3-05731651869a", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_cover", 
       "name": "induce_cover"
     }
   }, 
   {
-    "pk": 70, 
+    "pk": 65, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "968d079a-871c-4cae-b15e-c8e7b61f3b8c", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_features", 
       "name": "induce_features"
     }
   }, 
   {
-    "pk": 71, 
+    "pk": 66, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "0103c466-0e2e-47fe-b182-0a034beb7eed", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_max", 
       "name": "induce_max"
     }
   }, 
   {
-    "pk": 72, 
+    "pk": 67, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "78cb938d-16b8-4c7c-b712-b59e27aa837d", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_modes", 
       "name": "induce_modes"
     }
   }, 
   {
-    "pk": 73, 
+    "pk": 68, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "45f5cc84-b097-439a-9363-d2299c540913", 
-      "abstract_input": 211, 
+      "abstract_input": 188, 
       "value": "induce_tree", 
       "name": "induce_tree"
     }
   }, 
   {
-    "pk": 212, 
+    "pk": 189, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "pos", 
       "short_name": "pos", 
       "uid": "03788382-f3b9-4580-8e85-b600874ef643", 
@@ -143,10 +144,10 @@
     }
   }, 
   {
-    "pk": 213, 
+    "pk": 190, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "neg", 
       "short_name": "neg", 
       "uid": "01529349-3300-41c5-8585-3f7a90175120", 
@@ -161,10 +162,10 @@
     }
   }, 
   {
-    "pk": 214, 
+    "pk": 191, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "b", 
       "short_name": "b", 
       "uid": "2ec81e9e-d911-46a1-a95d-2eaf349443a8", 
@@ -179,10 +180,10 @@
     }
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   {
-    "pk": 215, 
+    "pk": 192, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "settings", 
       "short_name": "set", 
       "uid": "bfe16b08-89b1-4835-875c-6b0302fb1da3", 
@@ -197,10 +198,10 @@
     }
   }, 
   {
-    "pk": 216, 
+    "pk": 193, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "minpos", 
       "short_name": "mps", 
       "uid": "cdeaa39a-7eeb-40eb-9443-8519cb841d2e", 
@@ -215,10 +216,10 @@
     }
   }, 
   {
-    "pk": 217, 
+    "pk": 194, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "noise", 
       "short_name": "noi", 
       "uid": "61292a9b-ff5b-4a7e-8baf-e6810cb50dcd", 
@@ -233,10 +234,10 @@
     }
   }, 
   {
-    "pk": 218, 
+    "pk": 195, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "clauselength", 
       "short_name": "cln", 
       "uid": "546d3a62-b499-4e61-a9b1-4f89f24ba01f", 
@@ -251,10 +252,10 @@
     }
   }, 
   {
-    "pk": 219, 
+    "pk": 196, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "depth", 
       "short_name": "dpt", 
       "uid": "3541b804-e8f3-42c5-b022-c0b7a51f05e1", 
@@ -269,10 +270,10 @@
     }
   }, 
   {
-    "pk": 220, 
+    "pk": 197, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "evalfn", 
       "short_name": "efn", 
       "uid": "27ed0924-8fa9-4cad-b033-c0a98db9f366", 
@@ -287,130 +288,130 @@
     }
   }, 
   {
-    "pk": 74, 
+    "pk": 69, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "abd779d2-8276-4b2d-909d-2b6053d1f30f", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "accuracy", 
       "name": "accuracy"
     }
   }, 
   {
-    "pk": 75, 
+    "pk": 70, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "2ec2f418-657b-44f7-a420-83cb4f4baed5", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "auto_m", 
       "name": "auto_m"
     }
   }, 
   {
-    "pk": 76, 
+    "pk": 71, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "66261b29-3313-4f85-b8ab-f277e49eb40b", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "compression", 
       "name": "compression"
     }
   }, 
   {
-    "pk": 77, 
+    "pk": 72, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "427cd0aa-6d3c-457e-8762-cdc7ec6b8512", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "coverage", 
       "name": "coverage"
     }
   }, 
   {
-    "pk": 78, 
+    "pk": 73, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "bdf9d407-95af-4b42-b923-a027c45b0f26", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "entropy", 
       "name": "entropy"
     }
   }, 
   {
-    "pk": 79, 
+    "pk": 74, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "ddc2bde8-7143-4e8f-9e6b-cdcaea871e27", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "gini", 
       "name": "gini"
     }
   }, 
   {
-    "pk": 80, 
+    "pk": 75, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "0c4fd002-57a6-40b5-ac0f-e98cc62aa957", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "laplace", 
       "name": "laplace"
     }
   }, 
   {
-    "pk": 81, 
+    "pk": 76, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "2d764051-9dca-42f2-b131-2a87576c21d7", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "mestimate", 
       "name": "mestimate"
     }
   }, 
   {
-    "pk": 82, 
+    "pk": 77, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "0684bf39-09a5-4499-8939-51a58fcc2446", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "pbayes", 
       "name": "pbayes"
     }
   }, 
   {
-    "pk": 83, 
+    "pk": 78, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "ecfbee4f-ce81-40ed-80a2-d53e04e9c7d3", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "posonly", 
       "name": "posonly"
     }
   }, 
   {
-    "pk": 84, 
+    "pk": 79, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "775058c3-7763-4af7-bcf4-b629d1c0e6f1", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "sd", 
       "name": "sd"
     }
   }, 
   {
-    "pk": 85, 
+    "pk": 80, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "14e08667-f530-43e6-b932-b8e2ac394ea4", 
-      "abstract_input": 220, 
+      "abstract_input": 197, 
       "value": "wracc", 
       "name": "wracc"
     }
   }, 
   {
-    "pk": 221, 
+    "pk": 198, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "i", 
       "short_name": "i", 
       "uid": "48905a20-0192-40c0-82de-2389e8fdc88e", 
@@ -425,10 +426,10 @@
     }
   }, 
   {
-    "pk": 222, 
+    "pk": 199, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "language", 
       "short_name": "lan", 
       "uid": "9de49bde-7518-4116-8606-eccc134d1d8f", 
@@ -443,10 +444,10 @@
     }
   }, 
   {
-    "pk": 223, 
+    "pk": 200, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "m", 
       "short_name": "m", 
       "uid": "b07b2b85-bc8f-4dfc-aaf8-800b94077312", 
@@ -461,10 +462,10 @@
     }
   }, 
   {
-    "pk": 224, 
+    "pk": 201, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "max_features", 
       "short_name": "mxf", 
       "uid": "4a275a37-e6bc-4b22-816d-b45e2ac791e2", 
@@ -479,10 +480,10 @@
     }
   }, 
   {
-    "pk": 128, 
+    "pk": 113, 
     "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 111, 
+      "widget": 102, 
       "name": "theory", 
       "short_name": "the", 
       "variable": "theory", 
@@ -492,10 +493,10 @@
     }
   }, 
   {
-    "pk": 112, 
+    "pk": 103, 
     "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 20, 
+      "category": 19, 
       "treeview_image": "", 
       "name": "RSD", 
       "is_streaming": false, 
@@ -507,6 +508,7 @@
       "post_interact_action": "", 
       "user": null, 
       "visualization_view": "", 
+      "streaming_visualization_view": "", 
       "action": "ilp_rsd", 
       "wsdl_method": "", 
       "wsdl": "", 
@@ -517,10 +519,10 @@
     }
   }, 
   {
-    "pk": 225, 
+    "pk": 202, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "examples", 
       "short_name": "ex", 
       "uid": "817a82dc-2264-4181-a31a-6a7ff2b6c882", 
@@ -535,10 +537,10 @@
     }
   }, 
   {
-    "pk": 226, 
+    "pk": 203, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "b", 
       "short_name": "b", 
       "uid": "746dac3a-bcf9-4546-b0cb-ccfea866707a", 
@@ -553,10 +555,10 @@
     }
   }, 
   {
-    "pk": 227, 
+    "pk": 204, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "clauselength", 
       "short_name": "cln", 
       "uid": "d840e1d9-5bd1-4004-94ec-6acd5b3c9910", 
@@ -571,10 +573,10 @@
     }
   }, 
   {
-    "pk": 228, 
+    "pk": 205, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "pos", 
       "short_name": "pos", 
       "uid": "676ef826-7dd9-415a-8a8a-d82146dcc95a", 
@@ -589,10 +591,10 @@
     }
   }, 
   {
-    "pk": 229, 
+    "pk": 206, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "depth", 
       "short_name": "dpt", 
       "uid": "bed46927-aa71-46a4-9022-8219cd2f59ca", 
@@ -607,10 +609,10 @@
     }
   }, 
   {
-    "pk": 230, 
+    "pk": 207, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "neg", 
       "short_name": "neg", 
       "uid": "0b46921d-50fe-46b1-a1e4-67c918160a7f", 
@@ -625,10 +627,10 @@
     }
   }, 
   {
-    "pk": 231, 
+    "pk": 208, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "negation", 
       "short_name": "neg", 
       "uid": "bfff50a5-ed9b-4e3f-bfb0-e6d135a60f38", 
@@ -643,40 +645,40 @@
     }
   }, 
   {
-    "pk": 86, 
+    "pk": 81, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "45656c1d-a666-4689-a37d-79a7d3b9c603", 
-      "abstract_input": 231, 
+      "abstract_input": 208, 
       "value": "later", 
       "name": "later"
     }
   }, 
   {
-    "pk": 87, 
+    "pk": 82, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "230d9101-6512-4f09-8a83-727be3fa4c74", 
-      "abstract_input": 231, 
+      "abstract_input": 208, 
       "value": "none", 
       "name": "none"
     }
   }, 
   {
-    "pk": 88, 
+    "pk": 83, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "79eec714-165c-4d67-9eb5-8f0ebe9a374f", 
-      "abstract_input": 231, 
+      "abstract_input": 208, 
       "value": "now", 
       "name": "now"
     }
   }, 
   {
-    "pk": 232, 
+    "pk": 209, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "settings", 
       "short_name": "set", 
       "uid": "a1660c9f-952d-4f29-9f23-9b0be5fe8cea", 
@@ -691,10 +693,10 @@
     }
   }, 
   {
-    "pk": 233, 
+    "pk": 210, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "min_coverage", 
       "short_name": "mcv", 
       "uid": "0864df0d-3e46-4af2-9ea3-2ccbfe33034a", 
@@ -709,10 +711,10 @@
     }
   }, 
   {
-    "pk": 234, 
+    "pk": 211, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "filtering", 
       "short_name": "flt", 
       "uid": "f510c2a1-454f-4ef8-b346-aba39a41ce24", 
@@ -727,30 +729,30 @@
     }
   }, 
   {
-    "pk": 89, 
+    "pk": 84, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "56d3293d-9d78-437e-821d-e478018e1988", 
-      "abstract_input": 234, 
+      "abstract_input": 211, 
       "value": "false", 
       "name": "false"
     }
   }, 
   {
-    "pk": 90, 
+    "pk": 85, 
     "model": "workflows.abstractoption", 
     "fields": {
       "uid": "1b3a141e-2da8-4e58-9e2d-4055ee8e8470", 
-      "abstract_input": 234, 
+      "abstract_input": 211, 
       "value": "true", 
       "name": "true"
     }
   }, 
   {
-    "pk": 235, 
+    "pk": 212, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "subgroups", 
       "short_name": "sg", 
       "uid": "1c982c21-0b97-40d1-a35e-30ba16342b00", 
@@ -765,10 +767,10 @@
     }
   }, 
   {
-    "pk": 129, 
+    "pk": 114, 
     "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "features", 
       "short_name": "frs", 
       "variable": "features", 
@@ -778,10 +780,10 @@
     }
   }, 
   {
-    "pk": 130, 
+    "pk": 115, 
     "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "arff", 
       "short_name": "arf", 
       "variable": "arff", 
@@ -791,10 +793,10 @@
     }
   }, 
   {
-    "pk": 131, 
+    "pk": 116, 
     "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 112, 
+      "widget": 103, 
       "name": "rules", 
       "short_name": "rul", 
       "variable": "rules", 
@@ -804,10 +806,10 @@
     }
   }, 
   {
-    "pk": 135, 
+    "pk": 226, 
     "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 20, 
+      "category": 19, 
       "treeview_image": "", 
       "name": "SDM-Aleph", 
       "is_streaming": false, 
@@ -819,6 +821,7 @@
       "post_interact_action": "", 
       "user": null, 
       "visualization_view": "", 
+      "streaming_visualization_view": "", 
       "action": "ilp_sdmaleph", 
       "wsdl_method": "", 
       "wsdl": "", 
@@ -829,10 +832,10 @@
     }
   }, 
   {
-    "pk": 323, 
+    "pk": 596, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 135, 
+      "widget": 226, 
       "name": "examples", 
       "short_name": "ex", 
       "uid": "b82c4d43-f585-456f-824b-6ce47e27866f", 
@@ -847,10 +850,10 @@
     }
   }, 
   {
-    "pk": 324, 
+    "pk": 597, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 135, 
+      "widget": 226, 
       "name": "mapping", 
       "short_name": "map", 
       "uid": "cd4ab84b-91c7-42ed-bbb2-66c4a2d36fe0", 
@@ -865,10 +868,10 @@
     }
   }, 
   {
-    "pk": 325, 
+    "pk": 598, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 135, 
+      "widget": 226, 
       "name": "ontology", 
       "short_name": "ont", 
       "uid": "22bfc647-3185-44dd-8f7f-89fc4cc4dd87", 
@@ -883,10 +886,10 @@
     }
   }, 
   {
-    "pk": 326, 
+    "pk": 599, 
     "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 135, 
+      "widget": 226, 
       "name": "relation", 
       "short_name": "rel", 
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@@ -901,10 +904,10 @@
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@@ -919,10 +922,10 @@
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     "model": "workflows.abstractinput", 
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@@ -937,10 +940,10 @@
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     "model": "workflows.abstractinput", 
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@@ -955,10 +958,10 @@
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     "model": "workflows.abstractinput", 
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@@ -973,10 +976,10 @@
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@@ -991,10 +994,10 @@
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@@ -1009,10 +1012,10 @@
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@@ -1022,10 +1025,10 @@
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     "model": "workflows.abstractwidget", 
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       "name": "SDM-SEGS", 
       "is_streaming": false, 
@@ -1037,6 +1040,7 @@
       "post_interact_action": "", 
       "user": 1, 
       "visualization_view": "", 
+      "streaming_visualization_view": "", 
       "action": "call_webservice", 
       "wsdl_method": "sdmsegs", 
       "wsdl": "http://vihar.ijs.si:8096/", 
@@ -1047,10 +1051,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1065,10 +1069,10 @@
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     "model": "workflows.abstractinput", 
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       "name": "Send empty strings to webservices", 
       "short_name": "ses", 
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@@ -1083,10 +1087,10 @@
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@@ -1101,10 +1105,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1119,10 +1123,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1137,10 +1141,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1155,10 +1159,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1173,10 +1177,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1191,10 +1195,10 @@
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@@ -1209,10 +1213,10 @@
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@@ -1227,10 +1231,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1245,10 +1249,10 @@
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@@ -1263,10 +1267,10 @@
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@@ -1281,10 +1285,10 @@
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@@ -1299,10 +1303,10 @@
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@@ -1317,10 +1321,10 @@
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@@ -1335,10 +1339,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1353,10 +1357,10 @@
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       "name": "weightFisher", 
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@@ -1371,10 +1375,10 @@
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     "model": "workflows.abstractinput", 
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       "name": "posClassVal", 
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@@ -1389,10 +1393,10 @@
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@@ -1407,10 +1411,10 @@
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@@ -1425,10 +1429,10 @@
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@@ -1443,10 +1447,10 @@
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     "model": "workflows.abstractoutput", 
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       "name": "rules", 
       "short_name": "rls", 
       "variable": "rules", 
@@ -1456,10 +1460,10 @@
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     "model": "workflows.abstractwidget", 
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       "name": "SDM-SEGS Rule Viewer", 
       "is_streaming": false, 
@@ -1471,6 +1475,7 @@
       "post_interact_action": "", 
       "user": null, 
       "visualization_view": "ilp_sdmsegs_rule_viewer", 
+      "streaming_visualization_view": "", 
       "action": "ilp_sdmsegs_rule_viewer", 
       "wsdl_method": "", 
       "wsdl": "", 
@@ -1481,10 +1486,10 @@
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     "model": "workflows.abstractinput", 
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       "name": "SDM-SEGS rules", 
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@@ -1499,10 +1504,121 @@
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     "model": "workflows.abstractwidget", 
     "fields": {
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+      "category": 19, 
+      "treeview_image": "", 
+      "name": "Wordification", 
+      "is_streaming": false, 
+      "uid": "63f936a1-6841-44c5-8340-8e4f3fef4f6a", 
+      "interaction_view": "", 
+      "image": "", 
+      "package": "ilp", 
+      "static_image": "wordification.jpg", 
+      "post_interact_action": "", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "ilp_wordification", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
+      "description": ""
+    }
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+  {
+    "pk": 531, 
+    "model": "workflows.abstractinput", 
+    "fields": {
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+      "name": "target_table", 
+      "short_name": "odt", 
+      "uid": "f1b77c89-ed7b-4181-9f62-c2001fd7c388", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "target_table", 
+      "parameter": false, 
+      "order": 1, 
+      "description": "Orange data table"
+    }
+  }, 
+  {
+    "pk": 532, 
+    "model": "workflows.abstractinput", 
+    "fields": {
+      "widget": 200, 
+      "name": "feature n-grams", 
+      "short_name": "fng", 
+      "uid": "b5eea832-1712-4db1-a677-92deca4e7a75", 
+      "default": "1", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": "text", 
+      "variable": "f_ngram_size", 
+      "parameter": true, 
+      "order": 2, 
+      "description": "Construct words out of  upto n features"
+    }
+  }, 
+  {
+    "pk": 533, 
+    "model": "workflows.abstractinput", 
+    "fields": {
+      "widget": 200, 
+      "name": "other_tables", 
+      "short_name": "lot", 
+      "uid": "72854a26-f7bf-46a3-988e-61caaeabdc7a", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "other_tables", 
+      "parameter": false, 
+      "order": 3, 
+      "description": "List of Orange data tables"
+    }
+  }, 
+  {
+    "pk": 534, 
+    "model": "workflows.abstractinput", 
+    "fields": {
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+      "name": "context", 
+      "short_name": "ctx", 
+      "uid": "8f02978b-e0d7-45c5-ab74-6a0e8728654d", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "context", 
+      "parameter": false, 
+      "order": 4, 
+      "description": "Context"
+    }
+  }, 
+  {
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+    "model": "workflows.abstractoutput", 
+    "fields": {
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+      "name": "Document corpus", 
+      "short_name": "crp", 
+      "variable": "corpus", 
+      "uid": "43b6d258-31a8-4ec8-a22a-e8927eeca602", 
+      "order": 1, 
+      "description": "Result of wordification for main target table"
+    }
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+  {
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+    "model": "workflows.abstractwidget", 
+    "fields": {
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       "treeview_image": "", 
       "name": "Wordification", 
       "is_streaming": false, 
@@ -1514,6 +1630,7 @@
       "post_interact_action": "", 
       "user": null, 
       "visualization_view": "", 
+      "streaming_visualization_view": "", 
       "action": "ilp_wordification", 
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@@ -1524,10 +1641,10 @@
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       "name": "target_table", 
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@@ -1542,10 +1659,10 @@
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     "model": "workflows.abstractinput", 
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@@ -1560,10 +1677,10 @@
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@@ -1578,10 +1695,10 @@
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       "name": "noise", 
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@@ -1596,10 +1713,10 @@
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       "name": "clauselength", 
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@@ -1614,10 +1731,10 @@
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       "name": "depth", 
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@@ -1632,10 +1749,10 @@
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       "name": "evalfn", 
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@@ -1650,10 +1767,10 @@
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@@ -1668,10 +1785,10 @@
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     "model": "workflows.abstractinput", 
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       "name": "language", 
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@@ -1686,10 +1803,10 @@
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@@ -1704,10 +1821,10 @@
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@@ -1722,10 +1839,10 @@
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     "model": "workflows.abstractoutput", 
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       "name": "Document corpus", 
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       "variable": "corpus", 
@@ -1733,5 +1850,105 @@
       "order": 1, 
       "description": "Result of wordification for main target table"
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+  }, 
+  {
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+    "model": "workflows.category", 
+    "fields": {
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+      "parent": null, 
+      "workflow": null, 
+      "user": null, 
+      "order": 1, 
+      "name": "Performance Evaluation"
+    }
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+  {
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+    "model": "workflows.abstractwidget", 
+    "fields": {
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+      "treeview_image": "", 
+      "name": "Benchmark", 
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+      "uid": "e1cbb004-bf2a-4759-8437-dc88a207a5c4", 
+      "interaction_view": "", 
+      "image": "", 
+      "package": "ilp", 
+      "static_image": "wordification.jpg", 
+      "post_interact_action": "", 
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+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "benchmark", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
+      "description": ""
+    }
+  }, 
+  {
+    "pk": 463, 
+    "model": "workflows.abstractinput", 
+    "fields": {
+      "widget": 109, 
+      "name": "Inp", 
+      "short_name": "inp", 
+      "uid": "9b13d7e8-ad7c-42ff-80b6-cc6da10e2a46", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "in_att", 
+      "parameter": false, 
+      "order": 1, 
+      "description": "Construct words out of  upto n features"
+    }
+  }, 
+  {
+    "pk": 221, 
+    "model": "workflows.abstractinput", 
+    "fields": {
+      "widget": 109, 
+      "name": "start_time", 
+      "short_name": "tim", 
+      "uid": "f9b697a4-8909-49f5-8de8-d09759061221", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "start_time", 
+      "parameter": false, 
+      "order": 2, 
+      "description": "Start time"
+    }
+  }, 
+  {
+    "pk": 234, 
+    "model": "workflows.abstractoutput", 
+    "fields": {
+      "widget": 109, 
+      "name": "Output", 
+      "short_name": "out", 
+      "variable": "out_att", 
+      "uid": "efe0366c-87f3-435d-a8b2-521d2418a1c4", 
+      "order": 1, 
+      "description": "Output"
+    }
+  }, 
+  {
+    "pk": 125, 
+    "model": "workflows.abstractoutput", 
+    "fields": {
+      "widget": 109, 
+      "name": "Start time", 
+      "short_name": "tim", 
+      "variable": "time_diff", 
+      "uid": "98bdde2f-df1f-49bd-988c-aaa82d86f8f2", 
+      "order": 2, 
+      "description": "Start time"
+    }
   }
 ]
\ No newline at end of file
diff --git a/workflows/ilp/library.py b/workflows/ilp/library.py
index 39beef253bb545bb509c21756030c83b9c7b667d..17eb82af7b3178281a6496383c72e4e3851b6ee1 100644
--- a/workflows/ilp/library.py
+++ b/workflows/ilp/library.py
@@ -89,5 +89,7 @@ def ilp_wordification(input_dict):
     target_table = input_dict.get('target_table',None)
     other_tables = input_dict.get('other_tables', None)
     context = input_dict.get('context', None)
-    wordification = Wordification(target_table,other_tables,context)
+    word_att_length = int(input_dict.get('f_ngram_size', 1))
+    wordification = Wordification(target_table,other_tables,context,word_att_length)
+
     return {'corpus' : wordification.wordify()}
diff --git a/workflows/ilp/wordification/wordification.py b/workflows/ilp/wordification/wordification.py
index 5b63b2aa756b1fe38ee00b3b5b8d8573f8e449a5..45af17395b43a2bf3e0bbcb02125671749d24389 100644
--- a/workflows/ilp/wordification/wordification.py
+++ b/workflows/ilp/wordification/wordification.py
@@ -2,7 +2,7 @@ from collections import defaultdict
 import string
 class Wordification(object):
 
-    def __init__(self,target_table,other_tables,context):
+    def __init__(self,target_table,other_tables,context,word_att_length):
         """
         Wordification object constructor.
         
@@ -12,57 +12,133 @@ class Wordification(object):
         self.target_table=target_table
         self.other_tables=other_tables
         self.context=context
+        self.word_att_length=word_att_length
 
         self.connecting_tables=defaultdict(list)
         self.cached_sentences=defaultdict(dict)
         self.lll=defaultdict(int)
+
+
         #finds table connections
         for primary_table in [target_table]+other_tables:
             for secondary_table in [target_table]+other_tables:
                 if (primary_table.name,secondary_table.name) in self.context.connected:
                     for primary_key,foreign_key in self.context.connected[(primary_table.name,secondary_table.name)]:
                         if self.context.pkeys[primary_table.name] == primary_key:
-                            self.connecting_tables[primary_table].append((secondary_table,foreign_key))
+                            self.connecting_tables[primary_table].append((secondary_table,foreign_key,None))
+                        #else:
+                        #    self.connecting_tables[primary_table].append((secondary_table,primary_key,foreign_key))
+
+
+
+
+        self.index_by_value={}
+        for table in [target_table]+other_tables:
+            self.index_by_value[table.name]={}
+        for sec_t,sec_fkey,prim_fkey in [item for sublist in self.connecting_tables.values() for item in sublist]:
+            #if sec_t==table:
+            if not prim_fkey:
+                self.index_by_value[sec_t.name][sec_fkey]=defaultdict(list)
+                for ex in sec_t:
+                    self.index_by_value[sec_t.name][sec_fkey][str(ex[str(sec_fkey)])].append(ex)
+            else:
+                if not prim_fkey in self.index_by_value[sec_t.name]:
+                    self.index_by_value[sec_t.name][prim_fkey]=defaultdict(list)
+
+                for ex in sec_t:
+                    self.index_by_value[sec_t.name][prim_fkey][str(ex[str(prim_fkey)])].append(ex)
+
+        print self.connecting_tables
 
 
     def wordify(self):
         """
         Applies the wordification methodology on the target table
         """
-        s=string.join(["!"+str(ex.get_class())+" "+string.join(self.wordify_example(self.target_table,ex)," ") for ex in self.target_table],"\n")
-        print sorted(self.lll.items(),key=lambda k: [k[1],k[0]],reverse=True)
-        return s
 
-    def wordify_example(self,data,ex):
+        #class + wordification on every example of the main table
+
+        a=[]
+        for i,ex in enumerate(self.target_table):
+            a.append("!"+str(ex.get_class())+" "+string.join(self.wordify_example(self.target_table,ex)," "))
+
+        s=string.join(a,"\n")
+        #print sorted(self.lll.items(),key=lambda k: [k[1],k[0]],reverse=True)
+        #print a
+        #print "s"
+        return s#[0:10000000]
+
+    def wordify_example(self,data,ex,searched_connections=set([])):
         """
         Recursively constructs the 'wordification' document for the given example.
 
         @param data The given examples ExampleTable
         @param ex Example for which the document is constructed
         """
+        debug=False
         data_name=str(data.name)
+        if data_name=="ring_strucs":
+            print data_name
+        if debug:
+            print "======================================"
+            print "example:",ex
+            print "table name:", data_name
+            print "searched_connections:",len(searched_connections),searched_connections
+            print "connecting_tables:",len(self.connecting_tables[data]),self.connecting_tables[data]
+
         ex_pkey_value=data.name in self.context.pkeys and ex[str(self.context.pkeys[data.name])]
         self.lll[data_name+" "+str(ex_pkey_value)]+=1
 
         if not data_name in self.cached_sentences or not str(ex_pkey_value) in self.cached_sentences[data.name]:
         #else:
-            print data_name,str(ex_pkey_value)
+            #print data_name,str(ex_pkey_value)
             words=[] #word list for every example
-
+            if debug:
+                print "words:",len(words)
             #Construct words (tableName_attributeName_attributeValue) from the given table
             for att in data.domain.attributes:
                 if not str(att.name) in self.context.pkeys[data.name] and not str(att.name) in self.context.fkeys[data.name]:
                     words.append(self.att_to_s(data.name)+"_"+self.att_to_s(att.name)+"_"+self.att_to_s(ex[att]))
 
-            #Apply the wordification methodology recursively on all connecting tables
-            for sec_t,sec_fkey in self.connecting_tables[data]:
-                for sec_ex in sec_t:
-                    if ex_pkey_value and sec_ex[str(sec_fkey)]==ex_pkey_value:
-                        words+=self.wordify_example(sec_t,sec_ex)
-            #print words
+            #words from pairs of attributes
+            single_words=words[:]
+            if self.word_att_length>1:
+                for i,att1 in enumerate(single_words):
+                    for j,att2 in enumerate(single_words):
+                        if i<j:
+                            words.append(att1+"__"+att2)
+                            #print "2",words[-1]
+
+            if self.word_att_length>2:
+                for i,att1 in enumerate(single_words):
+                    for j,att2 in enumerate(single_words):
+                        for k,att3 in enumerate(single_words):
+                            if i<j and j<k:
+                                words.append(att1+"__"+att2+"__"+att3)
+                                #print "3",words[-1]
+
+
+        #Apply the wordification methodology recursively on all connecting tables
+            for sec_t,sec_fkey,prim_fkey in self.connecting_tables[data]:
+                #for sec_ex in sec_t:
+                #    if ex_pkey_value and sec_ex[str(sec_fkey)]==ex_pkey_value:
+                #        words+=self.wordify_example(sec_t,sec_ex)
+                #print sec_t,sec_fkey,prim_fkey
+                if debug:
+                    print "------------------"
+                    print "(sec_t,sec_fkey,prim):",(sec_t.name,sec_fkey,prim_fkey)
+                    print "search this table:",not (sec_t,sec_fkey) in searched_connections and sec_t!=self.target_table
+                    print "search this table:",not prim_fkey or not (data,sec_fkey) in searched_connections# and sec_t!=self.target_table
+                if not (sec_t,sec_fkey) in searched_connections and sec_t!=self.target_table and (not prim_fkey or not (data,sec_fkey) in searched_connections):
+                    by_value=self.index_by_value[sec_t.name][str(sec_fkey)][str(ex_pkey_value)] if not prim_fkey else self.index_by_value[sec_t.name][str(prim_fkey)][str(ex[str(sec_fkey)])]
+
+                    for sec_ex in by_value:
+                        words+=self.wordify_example(sec_t,sec_ex,searched_connections | set([(sec_t,sec_fkey),prim_fkey and (data,prim_fkey)]))
+
+
+
             self.cached_sentences[data_name][str(ex_pkey_value)]=words
-        else:
-            print data_name,str(ex_pkey_value), "cache: hit"
+
         return self.cached_sentences[data_name][str(ex_pkey_value)]
 
     def att_to_s(self,att):
@@ -71,5 +147,4 @@ class Wordification(object):
 
         @param att Orange attribute
         """
-
         return str(att).title().replace(' ','').replace('_','')
diff --git a/workflows/mysql/context.py b/workflows/mysql/context.py
index ea5679b8fce75470b53d33106ccd5a1619e13fdd..317d64327f1be347ad7267ab29293cf599eadaeb 100644
--- a/workflows/mysql/context.py
+++ b/workflows/mysql/context.py
@@ -63,8 +63,8 @@ class DBContext:
                     if col.endswith('_id'):
                         ref_table = (col[:-4] + 'ies') if col[-4] == 'y' else (col[:-3] + 's')
                         if ref_table in self.tables:
-                            self.connected[(table, ref_table)] = (col, 'id')
-                            self.connected[(ref_table, table)] = ('id', col)
+                            self.connected[(table, ref_table)].append((col, 'id'))
+                            self.connected[(ref_table, table)].append(('id', col))
                             self.fkeys[table].add(col)
                     if col == 'id':
                         self.pkeys[table] = col
diff --git a/workflows/mysql/converters.py b/workflows/mysql/converters.py
index 199a7e7a5dd02e062df04bd2b682a3868b139ad4..0c01e237ebb83ed6b2d19a7eda915d151cc61c42 100644
--- a/workflows/mysql/converters.py
+++ b/workflows/mysql/converters.py
@@ -259,7 +259,7 @@ class Orange_Converter(Converter):
         import orange
 
         cols = self.db.cols[table_name]
-        attributes, metas, class_var = [], [], []
+        attributes, metas, class_var = [], [], None
         for col in cols:
             att_type = self.orng_type(table_name,col)
             if att_type == 'd':
@@ -272,13 +272,13 @@ class Orange_Converter(Converter):
             if col == cls_att:
                 if att_type == 'string':
                     raise Exception('Unsuitable data type for a target variable: %s' % att_type)
-                class_var.append(att_var)
+                class_var=att_var
                 continue
-            elif att_type == 'string' or col in self.db.pkeys[table_name] or col in self.db.fkeys[table_name]:
+            elif att_type == 'string' or table_name in self.db.pkeys and col in self.db.pkeys[table_name] or table_name in self.db.fkeys and col in self.db.fkeys[table_name]:
                 metas.append(att_var)
             else:
                 attributes.append(att_var)
-        domain = orange.Domain(attributes + class_var)
+        domain = orange.Domain(attributes, class_var)
         for meta in metas:
             domain.addmeta(orange.newmetaid(), meta)
         dataset = orange.ExampleTable(domain)
@@ -286,7 +286,7 @@ class Orange_Converter(Converter):
         for row in self.db.rows(table_name, cols):
             example = orange.Example(domain)
             for col, val in zip(cols, row):
-                example[str(col)] = str(val)
+                example[str(col)] = str(val) if val!=None else '?'
             dataset.append(example)
         return dataset
 
diff --git a/workflows/mysql/db/package_data.json b/workflows/mysql/db/package_data.json
index 612481c532bb8d149574f2d874c16657cde975eb..252ed80790e0b8634b06ed90e51550c886a9885c 100644
--- a/workflows/mysql/db/package_data.json
+++ b/workflows/mysql/db/package_data.json
@@ -1,507 +1,512 @@
 [
   {
-    "pk": 39,
-    "model": "workflows.category",
+    "pk": 20, 
+    "model": "workflows.category", 
     "fields": {
-      "uid": "b66b71b1-99d6-4efc-b264-a914a3e42911",
-      "parent": null,
-      "workflow": null,
-      "user": null,
-      "order": 1,
+      "uid": "b66b71b1-99d6-4efc-b264-a914a3e42911", 
+      "parent": null, 
+      "workflow": null, 
+      "user": null, 
+      "order": 1, 
       "name": "MySQL"
     }
-  },
+  }, 
   {
-    "pk": 190,
-    "model": "workflows.abstractwidget",
+    "pk": 104, 
+    "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 39,
-      "treeview_image": "",
-      "name": "Database Context",
-      "is_streaming": false,
-      "uid": "649015ac-ca53-43bc-a36a-c603b52f8775",
-      "interaction_view": "mysql_db_context",
-      "image": "",
-      "package": "mysql",
-      "static_image": "mysql.png",
-      "post_interact_action": "mysql_db_context_finished",
-      "user": null,
-      "visualization_view": "",
-      "action": "mysql_db_context",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": true,
-      "has_progress_bar": false,
-      "order": 1,
+      "category": 20, 
+      "treeview_image": "", 
+      "name": "Database Context", 
+      "is_streaming": false, 
+      "uid": "649015ac-ca53-43bc-a36a-c603b52f8775", 
+      "interaction_view": "mysql_db_context", 
+      "image": "", 
+      "package": "mysql", 
+      "static_image": "mysql.png", 
+      "post_interact_action": "mysql_db_context_finished", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "mysql_db_context", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": true, 
+      "has_progress_bar": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 443,
-    "model": "workflows.abstractinput",
+    "pk": 213, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 190,
-      "name": "connection",
-      "short_name": "con",
-      "uid": "6c23b4a2-a18e-498e-a22c-4de86932da3e",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "connection",
-      "parameter": false,
-      "order": 1,
+      "widget": 104, 
+      "name": "connection", 
+      "short_name": "con", 
+      "uid": "6c23b4a2-a18e-498e-a22c-4de86932da3e", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "connection", 
+      "parameter": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 452,
-    "model": "workflows.abstractinput",
+    "pk": 477, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 190,
-      "name": "Table connection from names",
-      "short_name": "tbc",
-      "uid": "be3718eb-062e-48f2-af2a-8c31e66524fe",
-      "default": "false",
-      "required": true,
-      "multi": false,
-      "parameter_type": "checkbox",
-      "variable": "find_connections",
-      "parameter": true,
-      "order": 2,
+      "widget": 104, 
+      "name": "Table connection from names", 
+      "short_name": "tbc", 
+      "uid": "be3718eb-062e-48f2-af2a-8c31e66524fe", 
+      "default": "false", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": "checkbox", 
+      "variable": "find_connections", 
+      "parameter": true, 
+      "order": 2, 
       "description": "Tries to detect connections between tables solely by looking at the attribute names."
     }
-  },
+  }, 
   {
-    "pk": 216,
-    "model": "workflows.abstractoutput",
+    "pk": 117, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 190,
-      "name": "context",
-      "short_name": "cxt",
-      "variable": "context",
-      "uid": "171aa481-0f93-4315-a476-ed3b0aa8c9e4",
-      "order": 1,
+      "widget": 104, 
+      "name": "context", 
+      "short_name": "cxt", 
+      "variable": "context", 
+      "uid": "171aa481-0f93-4315-a476-ed3b0aa8c9e4", 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 191,
-    "model": "workflows.abstractwidget",
+    "pk": 105, 
+    "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 39,
-      "treeview_image": "",
-      "name": "Database To Aleph",
-      "is_streaming": false,
-      "uid": "3c5ac714-84ca-4c93-befb-ce0c16148193",
-      "interaction_view": "",
-      "image": "",
-      "package": "mysql",
-      "static_image": "mysql.png",
-      "post_interact_action": "",
-      "user": null,
-      "visualization_view": "",
-      "action": "mysql_aleph_converter",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": false,
-      "has_progress_bar": false,
-      "order": 1,
+      "category": 20, 
+      "treeview_image": "", 
+      "name": "Database To Aleph", 
+      "is_streaming": false, 
+      "uid": "3c5ac714-84ca-4c93-befb-ce0c16148193", 
+      "interaction_view": "", 
+      "image": "", 
+      "package": "mysql", 
+      "static_image": "mysql.png", 
+      "post_interact_action": "", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "mysql_aleph_converter", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 453,
-    "model": "workflows.abstractinput",
+    "pk": 235, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 191,
-      "name": "Target attribute value",
-      "short_name": "tgt",
-      "uid": "5b7354f1-35d8-41c8-a0ae-c3848855f29d",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": "text",
-      "variable": "target_att_val",
-      "parameter": true,
-      "order": 1,
+      "widget": 105, 
+      "name": "Target attribute value", 
+      "short_name": "tgt", 
+      "uid": "5b7354f1-35d8-41c8-a0ae-c3848855f29d", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": "text", 
+      "variable": "target_att_val", 
+      "parameter": true, 
+      "order": 1, 
       "description": "Target attribute value to be used as the positive class"
     }
-  },
+  }, 
   {
-    "pk": 660,
-    "model": "workflows.abstractinput",
+    "pk": 493, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 191,
-      "name": "dump full database",
-      "short_name": "dmp",
-      "uid": "fb5fc5f5-aa8f-4667-b96a-2b3f9a7672c7",
-      "default": "false",
-      "required": false,
-      "multi": false,
-      "parameter_type": "checkbox",
-      "variable": "dump",
-      "parameter": true,
-      "order": 1,
+      "widget": 105, 
+      "name": "dump full database", 
+      "short_name": "dmp", 
+      "uid": "fb5fc5f5-aa8f-4667-b96a-2b3f9a7672c7", 
+      "default": "false", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": "checkbox", 
+      "variable": "dump", 
+      "parameter": true, 
+      "order": 1, 
       "description": "dump full database to prolog"
     }
-  },
+  }, 
   {
-    "pk": 644,
-    "model": "workflows.abstractinput",
+    "pk": 494, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 191,
-      "name": "discretization intervals",
-      "short_name": "itr",
-      "uid": "e20c7a7c-d2f5-4ab6-9ef1-b3d244140d88",
-      "default": "",
-      "required": false,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "discr_intervals",
-      "parameter": false,
-      "order": 2,
+      "widget": 105, 
+      "name": "discretization intervals", 
+      "short_name": "itr", 
+      "uid": "e20c7a7c-d2f5-4ab6-9ef1-b3d244140d88", 
+      "default": "", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "discr_intervals", 
+      "parameter": false, 
+      "order": 2, 
       "description": "dictionary of intervals for discretization"
     }
-  },
+  }, 
   {
-    "pk": 444,
-    "model": "workflows.abstractinput",
+    "pk": 214, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 191,
-      "name": "context",
-      "short_name": "cxt",
-      "uid": "474e9673-9c55-48c5-bae8-a7b986aa0287",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "context",
-      "parameter": false,
-      "order": 3,
+      "widget": 105, 
+      "name": "context", 
+      "short_name": "cxt", 
+      "uid": "474e9673-9c55-48c5-bae8-a7b986aa0287", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "context", 
+      "parameter": false, 
+      "order": 3, 
       "description": "Database context object"
     }
-  },
+  }, 
   {
-    "pk": 217,
-    "model": "workflows.abstractoutput",
+    "pk": 118, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 191,
-      "name": "positive examples",
-      "short_name": "pos",
-      "variable": "pos_examples",
-      "uid": "48184527-16a5-446c-9181-48a6558430c2",
-      "order": 1,
+      "widget": 105, 
+      "name": "positive examples", 
+      "short_name": "pos", 
+      "variable": "pos_examples", 
+      "uid": "48184527-16a5-446c-9181-48a6558430c2", 
+      "order": 1, 
       "description": "positive examples file"
     }
-  },
+  }, 
   {
-    "pk": 218,
-    "model": "workflows.abstractoutput",
+    "pk": 119, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 191,
-      "name": "negative examples",
-      "short_name": "neg",
-      "variable": "neg_examples",
-      "uid": "2c623064-95cd-48ac-8bff-617edf2b9468",
-      "order": 2,
+      "widget": 105, 
+      "name": "negative examples", 
+      "short_name": "neg", 
+      "variable": "neg_examples", 
+      "uid": "2c623064-95cd-48ac-8bff-617edf2b9468", 
+      "order": 2, 
       "description": "negative examples file"
     }
-  },
+  }, 
   {
-    "pk": 219,
-    "model": "workflows.abstractoutput",
+    "pk": 120, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 191,
-      "name": "background knowledge",
-      "short_name": "b",
-      "variable": "bk",
-      "uid": "5e61e44e-cc52-4471-9a41-3afa52f58ab1",
-      "order": 3,
+      "widget": 105, 
+      "name": "background knowledge", 
+      "short_name": "b", 
+      "variable": "bk", 
+      "uid": "5e61e44e-cc52-4471-9a41-3afa52f58ab1", 
+      "order": 3, 
       "description": "background knowledge"
     }
-  },
+  }, 
   {
-    "pk": 192,
-    "model": "workflows.abstractwidget",
+    "pk": 106, 
+    "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 39,
-      "treeview_image": "",
-      "name": "Database To Orange Table",
-      "is_streaming": false,
-      "uid": "baa32a60-5acb-42a1-ba83-23a6ab2160e7",
-      "interaction_view": "mysql_orange_converter",
-      "image": "",
-      "package": "mysql",
-      "static_image": "mysql.png",
-      "post_interact_action": "mysql_orange_converter_finished",
-      "user": null,
-      "visualization_view": "",
-      "action": "mysql_orange_converter",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": false,
-      "has_progress_bar": false,
-      "order": 1,
+      "category": 20, 
+      "treeview_image": "", 
+      "name": "Database To Orange Table", 
+      "is_streaming": false, 
+      "uid": "baa32a60-5acb-42a1-ba83-23a6ab2160e7", 
+      "interaction_view": "mysql_orange_converter", 
+      "image": "", 
+      "package": "mysql", 
+      "static_image": "mysql.png", 
+      "post_interact_action": "mysql_orange_converter_finished", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "mysql_orange_converter", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 445,
-    "model": "workflows.abstractinput",
+    "pk": 215, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 192,
-      "name": "context",
-      "short_name": "cxt",
-      "uid": "1f9b5ccf-65c3-4ccc-818e-afb3a6ffee20",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "context",
-      "parameter": false,
-      "order": 1,
+      "widget": 106, 
+      "name": "context", 
+      "short_name": "cxt", 
+      "uid": "1f9b5ccf-65c3-4ccc-818e-afb3a6ffee20", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "context", 
+      "parameter": false, 
+      "order": 1, 
       "description": "Database context object"
     }
-  },
+  }, 
   {
-    "pk": 237,
-    "model": "workflows.abstractoutput",
+    "pk": 215, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 192,
-      "name": "Data table",
-      "short_name": "odt",
-      "variable": "target_table_dataset",
-      "uid": "8dc434fd-3307-432f-b1d7-74638390a077",
-      "order": 1,
+      "widget": 106, 
+      "name": "Data table", 
+      "short_name": "odt", 
+      "variable": "target_table_dataset", 
+      "uid": "8dc434fd-3307-432f-b1d7-74638390a077", 
+      "order": 1, 
       "description": "Orange data table"
     }
-  },
+  }, 
   {
-    "pk": 238,
-    "model": "workflows.abstractoutput",
+    "pk": 216, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 192,
-      "name": "List of Data tables",
-      "short_name": "lot",
-      "variable": "other_table_datasets",
-      "uid": "f69bd0bb-3041-4150-8d3a-e9767aa304da",
-      "order": 2,
+      "widget": 106, 
+      "name": "List of Data tables", 
+      "short_name": "lot", 
+      "variable": "other_table_datasets", 
+      "uid": "f69bd0bb-3041-4150-8d3a-e9767aa304da", 
+      "order": 2, 
       "description": "List of Orange data tables"
     }
-  },
+  }, 
   {
-    "pk": 193,
-    "model": "workflows.abstractwidget",
+    "pk": 107, 
+    "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 39,
-      "treeview_image": "",
-      "name": "Database To RSD",
-      "is_streaming": false,
-      "uid": "e5b68e38-cb53-408a-a58f-26742d6ecb3c",
-      "interaction_view": "",
-      "image": "",
-      "package": "mysql",
-      "static_image": "mysql.png",
-      "post_interact_action": "",
-      "user": null,
-      "visualization_view": "",
-      "action": "mysql_rsd_converter",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": false,
-      "has_progress_bar": false,
-      "order": 1,
+      "category": 20, 
+      "treeview_image": "", 
+      "name": "Database To RSD", 
+      "is_streaming": false, 
+      "uid": "e5b68e38-cb53-408a-a58f-26742d6ecb3c", 
+      "interaction_view": "", 
+      "image": "", 
+      "package": "mysql", 
+      "static_image": "mysql.png", 
+      "post_interact_action": "", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "mysql_rsd_converter", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 446,
-    "model": "workflows.abstractinput",
+    "pk": 216, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 193,
-      "name": "context",
-      "short_name": "cxt",
-      "uid": "4f1397a8-4e72-4b34-b31d-d09bf9a7e7d9",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "context",
-      "parameter": false,
-      "order": 1,
+      "widget": 107, 
+      "name": "context", 
+      "short_name": "cxt", 
+      "uid": "4f1397a8-4e72-4b34-b31d-d09bf9a7e7d9", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "context", 
+      "parameter": false, 
+      "order": 1, 
       "description": "Database context object"
     }
-  },
+  }, 
   {
-    "pk": 659,
-    "model": "workflows.abstractinput",
+    "pk": 495, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 193,
-      "name": "dump full database",
-      "short_name": "dmp",
-      "uid": "3c1375b1-10ed-400d-abfe-261115723c2f",
-      "default": "false",
-      "required": false,
-      "multi": false,
-      "parameter_type": "checkbox",
-      "variable": "dump",
-      "parameter": true,
-      "order": 1,
+      "widget": 107, 
+      "name": "dump full database", 
+      "short_name": "dmp", 
+      "uid": "3c1375b1-10ed-400d-abfe-261115723c2f", 
+      "default": "false", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": "checkbox", 
+      "variable": "dump", 
+      "parameter": true, 
+      "order": 1, 
       "description": "dump full database"
     }
-  },
+  }, 
   {
-    "pk": 645,
-    "model": "workflows.abstractinput",
+    "pk": 500, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 193,
-      "name": "discretization intervals",
-      "short_name": "itr",
-      "uid": "de698509-3bdc-482f-b5f9-9c6b3916426b",
-      "default": "",
-      "required": false,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "discr_intervals",
-      "parameter": false,
-      "order": 2,
+      "widget": 107, 
+      "name": "discretization intervals", 
+      "short_name": "itr", 
+      "uid": "de698509-3bdc-482f-b5f9-9c6b3916426b", 
+      "default": "", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "discr_intervals", 
+      "parameter": false, 
+      "order": 2, 
       "description": "dictionary of intervals for discretization"
     }
-  },
+  }, 
   {
-    "pk": 221,
-    "model": "workflows.abstractoutput",
+    "pk": 122, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 193,
-      "name": "examples",
-      "short_name": "ex",
-      "variable": "examples",
-      "uid": "f17690db-636b-4874-8406-f57778550c27",
-      "order": 1,
+      "widget": 107, 
+      "name": "examples", 
+      "short_name": "ex", 
+      "variable": "examples", 
+      "uid": "f17690db-636b-4874-8406-f57778550c27", 
+      "order": 1, 
       "description": "examples"
     }
-  },
+  }, 
   {
-    "pk": 222,
-    "model": "workflows.abstractoutput",
+    "pk": 123, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 193,
-      "name": "background knowledge",
-      "short_name": "b",
-      "variable": "bk",
-      "uid": "89a386ef-3aa8-441f-99ff-4b64b1e3357f",
-      "order": 2,
+      "widget": 107, 
+      "name": "background knowledge", 
+      "short_name": "b", 
+      "variable": "bk", 
+      "uid": "89a386ef-3aa8-441f-99ff-4b64b1e3357f", 
+      "order": 2, 
       "description": "background knowledge"
     }
-  },
+  }, 
   {
-    "pk": 194,
-    "model": "workflows.abstractwidget",
+    "pk": 108, 
+    "model": "workflows.abstractwidget", 
     "fields": {
-      "category": 39,
-      "treeview_image": "",
-      "name": "MySQL Connect",
-      "is_streaming": false,
-      "uid": "41978deb-c245-4e1f-95a2-ceadcfe6898a",
-      "interaction_view": "",
-      "image": "",
-      "package": "mysql",
-      "static_image": "mysql.png",
-      "post_interact_action": "",
-      "user": null,
-      "visualization_view": "",
-      "action": "mysql_connect",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": false,
-      "has_progress_bar": false,
-      "order": 1,
+      "category": 20, 
+      "treeview_image": "", 
+      "name": "MySQL Connect", 
+      "is_streaming": false, 
+      "uid": "41978deb-c245-4e1f-95a2-ceadcfe6898a", 
+      "interaction_view": "", 
+      "image": "", 
+      "package": "mysql", 
+      "static_image": "mysql.png", 
+      "post_interact_action": "", 
+      "user": null, 
+      "visualization_view": "", 
+      "streaming_visualization_view": "", 
+      "action": "mysql_connect", 
+      "wsdl_method": "", 
+      "wsdl": "", 
+      "interactive": false, 
+      "has_progress_bar": false, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 447,
-    "model": "workflows.abstractinput",
+    "pk": 217, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 194,
-      "name": "user",
-      "short_name": "usr",
-      "uid": "0f36f10b-066f-4ad3-9fa8-39205440076a",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": "text",
-      "variable": "user",
-      "parameter": true,
-      "order": 1,
+      "widget": 108, 
+      "name": "user", 
+      "short_name": "usr", 
+      "uid": "0f36f10b-066f-4ad3-9fa8-39205440076a", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": "text", 
+      "variable": "user", 
+      "parameter": true, 
+      "order": 1, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 448,
-    "model": "workflows.abstractinput",
+    "pk": 218, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 194,
-      "name": "password",
-      "short_name": "pwd",
-      "uid": "8ead911a-3d1b-4e50-b56a-64873b85d3cf",
-      "default": "",
-      "required": false,
-      "multi": false,
-      "parameter_type": "password",
-      "variable": "password",
-      "parameter": true,
-      "order": 2,
+      "widget": 108, 
+      "name": "password", 
+      "short_name": "pwd", 
+      "uid": "8ead911a-3d1b-4e50-b56a-64873b85d3cf", 
+      "default": "", 
+      "required": false, 
+      "multi": false, 
+      "parameter_type": "password", 
+      "variable": "password", 
+      "parameter": true, 
+      "order": 2, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 449,
-    "model": "workflows.abstractinput",
+    "pk": 219, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 194,
-      "name": "host",
-      "short_name": "hst",
-      "uid": "9812cc11-b21e-4444-8dfe-bc0c68fe79e8",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": "text",
-      "variable": "host",
-      "parameter": true,
-      "order": 3,
+      "widget": 108, 
+      "name": "host", 
+      "short_name": "hst", 
+      "uid": "9812cc11-b21e-4444-8dfe-bc0c68fe79e8", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": "text", 
+      "variable": "host", 
+      "parameter": true, 
+      "order": 3, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 450,
-    "model": "workflows.abstractinput",
+    "pk": 220, 
+    "model": "workflows.abstractinput", 
     "fields": {
-      "widget": 194,
-      "name": "database",
-      "short_name": "db",
-      "uid": "d132adce-c3ec-411a-8ee7-906be4a99f61",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": "text",
-      "variable": "database",
-      "parameter": true,
-      "order": 4,
+      "widget": 108, 
+      "name": "database", 
+      "short_name": "db", 
+      "uid": "d132adce-c3ec-411a-8ee7-906be4a99f61", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": "text", 
+      "variable": "database", 
+      "parameter": true, 
+      "order": 4, 
       "description": ""
     }
-  },
+  }, 
   {
-    "pk": 223,
-    "model": "workflows.abstractoutput",
+    "pk": 124, 
+    "model": "workflows.abstractoutput", 
     "fields": {
-      "widget": 194,
-      "name": "connection",
-      "short_name": "con",
-      "variable": "connection",
-      "uid": "4858c86c-c53e-4722-9747-635af56bd4dd",
-      "order": 1,
+      "widget": 108, 
+      "name": "connection", 
+      "short_name": "con", 
+      "variable": "connection", 
+      "uid": "4858c86c-c53e-4722-9747-635af56bd4dd", 
+      "order": 1, 
       "description": ""
     }
   }
diff --git a/workflows/mysql/interaction_views.py b/workflows/mysql/interaction_views.py
index fba08272261734891a751e9b08f92ba87642f444..71bb07bdfad75020f74d5ec4415bfa1985276c9e 100644
--- a/workflows/mysql/interaction_views.py
+++ b/workflows/mysql/interaction_views.py
@@ -13,6 +13,10 @@ def mysql_db_context(request, input_dict, output_dict, widget):
     initial_context = DBContext(con, find_connections=find_con)
     initial_target_cols = initial_context.cols[initial_context.target_table]
     cols_dump = json.dumps(initial_context.cols)
-    return render(request, 'interactions/db_context.html', {'widget':widget, 'context': initial_context, 'target_cols' : initial_target_cols, 'cols' : cols_dump})
+    return render(request, 'interactions/db_context.html', {'widget':widget,
+                                                            'context': initial_context,
+                                                            'connections' : dict(initial_context.connected),
+                                                            'target_cols' : initial_target_cols,
+                                                            'cols' : cols_dump})
 
 
diff --git a/workflows/mysql/templates/interactions/db_context.html b/workflows/mysql/templates/interactions/db_context.html
index eead78a06ad27899481032844e48f48712727932..855947cf0b771112cc23e216d334c6e86abc824f 100755
--- a/workflows/mysql/templates/interactions/db_context.html
+++ b/workflows/mysql/templates/interactions/db_context.html
@@ -33,7 +33,7 @@
 					<tr><th>Table</th><th>Referenced table</th><th>Column</th><th>Referenced column</th></tr>
 				</thead>
 				<tbody>
-                {% for tables, cols in context.connected.items %}
+                {% for tables, cols in connections.items %}
                     {% for cols_inner in cols %}
                         <tr><td>{{tables.0}}</td><td>{{tables.1}}</td><td>{{cols_inner.0}}</td><td>{{cols_inner.1}}</td></tr>
                     {% endfor %}
diff --git a/workflows/perfeval/db/package_data.json b/workflows/perfeval/db/package_data.json
index a46de22758d5744ceb0c5cd8b0d028415427de94..2b73bb681948843e968ab2bc536f84e0373c4519 100644
--- a/workflows/perfeval/db/package_data.json
+++ b/workflows/perfeval/db/package_data.json
@@ -1,510 +1,516 @@
 [
   {
-    "pk": 48,
-    "model": "workflows.category",
-    "fields": {
-      "uid": "ed2728bc-3fd5-4244-9876-f6a757d1b922",
-      "parent": null,
-      "workflow": null,
-      "user": null,
-      "order": 1,
+    "pk": 18, 
+    "model": "workflows.category", 
+    "fields": {
+      "uid": "ed2728bc-3fd5-4244-9876-f6a757d1b922", 
+      "parent": null, 
+      "workflow": null, 
+      "user": null, 
+      "order": 1, 
       "name": "Performance Evaluation"
     }
-  },
-  {
-    "pk": 120,
-    "model": "workflows.abstractwidget",
-    "fields": {
-      "category": 48,
-      "treeview_image": "treeview/aggregate-icon.png",
-      "name": "Aggregate Detection Results",
-      "is_streaming": false,
-      "uid": "17cf3814-1edd-4c0c-84dd-e1198c033584",
-      "interaction_view": "",
-      "image": "images/aggregate-icon.png",
-      "package": "perfeval",
-      "static_image": "",
-      "post_interact_action": "",
-      "user": null,
-      "visualization_view": "",
-      "action": "aggr_results",
-      "wsdl_method": "",
-      "wsdl": "",
-      "interactive": false,
-      "has_progress_bar": false,
-      "order": 1,
+  }, 
+  {
+    "pk": 96, 
+    "model": "workflows.abstractwidget", 
+    "fields": {
+      "category": 18, 
+      "treeview_image": "treeview/aggregate-icon.png", 
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+      "abstract_input": 186, 
+      "value": "0.03", 
       "name": " 3"
     }
-  },
+  }, 
   {
-    "pk": 47,
-    "model": "workflows.abstractoption",
+    "pk": 54, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "cdd0bfe5-1cf4-4988-8ea2-2f93bfffcde8",
-      "abstract_input": 274,
-      "value": "0.04",
+      "uid": "cdd0bfe5-1cf4-4988-8ea2-2f93bfffcde8", 
+      "abstract_input": 186, 
+      "value": "0.04", 
       "name": " 4"
     }
-  },
+  }, 
   {
-    "pk": 48,
-    "model": "workflows.abstractoption",
+    "pk": 55, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "9003923c-73e9-4ab2-bb1a-c1cb5af8f289",
-      "abstract_input": 274,
-      "value": "0.05",
+      "uid": "9003923c-73e9-4ab2-bb1a-c1cb5af8f289", 
+      "abstract_input": 186, 
+      "value": "0.05", 
       "name": " 5"
     }
-  },
+  }, 
   {
-    "pk": 49,
-    "model": "workflows.abstractoption",
+    "pk": 56, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "dcf68d77-c3aa-4044-9800-a3bc568d5b54",
-      "abstract_input": 274,
-      "value": "0.06",
+      "uid": "dcf68d77-c3aa-4044-9800-a3bc568d5b54", 
+      "abstract_input": 186, 
+      "value": "0.06", 
       "name": " 6"
     }
-  },
+  }, 
   {
-    "pk": 50,
-    "model": "workflows.abstractoption",
+    "pk": 57, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "d3b0473c-d8a3-46c9-8d8c-fa5ecd21461a",
-      "abstract_input": 274,
-      "value": "0.07",
+      "uid": "d3b0473c-d8a3-46c9-8d8c-fa5ecd21461a", 
+      "abstract_input": 186, 
+      "value": "0.07", 
       "name": " 7"
     }
-  },
+  }, 
   {
-    "pk": 51,
-    "model": "workflows.abstractoption",
+    "pk": 58, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "c0be8ca7-3377-40bf-91a0-a6f2ce152078",
-      "abstract_input": 274,
-      "value": "0.08",
+      "uid": "c0be8ca7-3377-40bf-91a0-a6f2ce152078", 
+      "abstract_input": 186, 
+      "value": "0.08", 
       "name": " 8"
     }
-  },
+  }, 
   {
-    "pk": 52,
-    "model": "workflows.abstractoption",
+    "pk": 59, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "a383432b-3b92-4293-8d1d-e747bcb4eeba",
-      "abstract_input": 274,
-      "value": "0.09",
+      "uid": "a383432b-3b92-4293-8d1d-e747bcb4eeba", 
+      "abstract_input": 186, 
+      "value": "0.09", 
       "name": " 9"
     }
-  },
+  }, 
   {
-    "pk": 54,
-    "model": "workflows.abstractoption",
+    "pk": 60, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "60176291-79c8-4042-afc4-55c8a11209d7",
-      "abstract_input": 274,
-      "value": "0.1",
+      "uid": "60176291-79c8-4042-afc4-55c8a11209d7", 
+      "abstract_input": 186, 
+      "value": "0.1", 
       "name": "10"
     }
-  },
+  }, 
   {
-    "pk": 75,
-    "model": "workflows.abstractoption",
+    "pk": 61, 
+    "model": "workflows.abstractoption", 
     "fields": {
-      "uid": "a82e638a-928d-4271-89a1-e511e50f43a4",
-      "abstract_input": 274,
-      "value": "0",
+      "uid": "a82e638a-928d-4271-89a1-e511e50f43a4", 
+      "abstract_input": 186, 
+      "value": "0", 
       "name": "Do not use ε-proximity evaluation"
     }
-  },
-  {
-    "pk": 248,
-    "model": "workflows.abstractinput",
-    "fields": {
-      "widget": 108,
-      "name": "Algorithm Performance",
-      "short_name": "alp",
-      "uid": "9bd36b53-7c9a-4ce7-a591-acecfe1bdc14",
-      "default": "",
-      "required": true,
-      "multi": false,
-      "parameter_type": null,
-      "variable": "performance",
-      "parameter": false,
-      "order": 2,
+  }, 
+  {
+    "pk": 187, 
+    "model": "workflows.abstractinput", 
+    "fields": {
+      "widget": 101, 
+      "name": "Algorithm Performance", 
+      "short_name": "alp", 
+      "uid": "9bd36b53-7c9a-4ce7-a591-acecfe1bdc14", 
+      "default": "", 
+      "required": true, 
+      "multi": false, 
+      "parameter_type": null, 
+      "variable": "performance", 
+      "parameter": false, 
+      "order": 2, 
       "description": ""
     }
   }
diff --git a/workflows/perfeval/library.py b/workflows/perfeval/library.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..db8888eadb46b939e58a2206c621fc7320fa2866 100644
--- a/workflows/perfeval/library.py
+++ b/workflows/perfeval/library.py
@@ -0,0 +1,6 @@
+def benchmark(input_dict):
+    import time
+    in_att = input_dict.get('in_att', None)
+    start_time= input_dict.get('start_time', None)
+    time_diff=(time.time()-start_time) if start_time else time.time()
+    return {'out_att': in_att, 'time_diff': time_diff}
diff --git a/workflows/visualization_views.py b/workflows/visualization_views.py
index 73115e7cb295b2c3f07f7971baef50741fb39c83..45f2a8dab3d71482f042d95b7a94cf81deb1ad4a 100755
--- a/workflows/visualization_views.py
+++ b/workflows/visualization_views.py
@@ -123,7 +123,7 @@ def orng_table_to_dict(data):
         metas.append(data.domain.get_meta(m).name)
     for a in data.domain.attributes:
         attrs.append(a.name)
-    pretty_float = lambda x, a: '%.3f' % x if a.var_type == Orange.feature.Type.Continuous else x
+    pretty_float = lambda x, a: '%.3f' % x if a.var_type == Orange.feature.Type.Continuous and x!='?' else x
     for inst in xrange(len(data)):
         inst_new = []
         for a in data.domain.variables: