Ontology Evolution - Revision history

Pramod at 04:20, 13 March 2013

2013-03-13T04:20:52Z

2013-03-13T04:19:15Z

2013-03-13T04:18:58Z

2011-11-10T00:29:25Z

‎Evaluation of Ontology Evolution Process

2011-11-10T00:28:54Z

‎Evaluation of Ontology Evolution Process

2011-11-08T06:11:05Z

‎Concept Removal

2011-11-08T06:09:03Z

‎Concept Removal

2011-11-08T06:03:55Z

‎Ignore Evidence

2011-11-08T06:03:42Z

‎Ignore Evidence

2011-11-08T06:03:33Z

‎Ignore Evidence

← Older revision		Revision as of 04:20, 13 March 2013
Line 34:		Line 34:

	==Source==		==Source==
−	The extended robocup rescue simulator can be found [http://sonicbanana.cs.wright.edu/ontevol/roborescue.zip here].	+	The extended robocup rescue simulator can be found [http://sonicbanana.cs.wright.edu/ontevol/roborescue.zip here]. The code is to be used in compliance with the original restrictions. The code is an experimental prototype and has no explicit documentation.

← Older revision		Revision as of 04:19, 13 March 2013
Line 34:		Line 34:

	==Source==		==Source==
−	The extended robocup rescue simulator can be found [~~here~~ http://sonicbanana.cs.wright.edu/ontevol/roborescue.zip].	+	The extended robocup rescue simulator can be found [http://sonicbanana.cs.wright.edu/ontevol/roborescue.zip here].

← Older revision		Revision as of 04:18, 13 March 2013
Line 32:		Line 32:
	===External Evidences===		===External Evidences===
	[[Image:ontology_evolution_depiction2.png\|700px\|alt=Ontology Expansion for an incoming Evidence\|Ontology Expansion for an incoming Evidence]]		[[Image:ontology_evolution_depiction2.png\|700px\|alt=Ontology Expansion for an incoming Evidence\|Ontology Expansion for an incoming Evidence]]
		+
		+	==Source==
		+	The extended robocup rescue simulator can be found [here http://sonicbanana.cs.wright.edu/ontevol/roborescue.zip].

@@ Line 5: / Line 5: @@
 # Concept Removal
 # Ignore Evidence
-The image also has support information associated with each concept. All the experiments were done for thresholds (1) match threshold (used to match incoming evidences with concepts in the ontology) = 0.7 and (2) Support update threshold (used to do a support update rather than expansion) = 0.9.
+We also show the support information associated with each concept. All the experiments were done for thresholds (1) match threshold (used to match incoming evidences with concepts in the ontology) = 0.7 and (2) Support update threshold (used to do a support update rather than expansion) = 0.9.
 ===Ontology expansion===

@@ Line 5: / Line 5: @@
 # Concept Removal
 # Ignore Evidence
 ===Ontology expansion===

@@ Line 17: / Line 17: @@
 There are multiple evidences in this run just to simulate removal of concepts. The concept removal is performed by repeatedly running the ontology evolution process for the same set of evidences. The effect of such a run is that some concepts that do not have support even after processing of a number of evidences mentioned in the properties file (in this case it was set to 30 evidences), will have it’s support reduced. This reduction in support will result in its removal from the ontology based on the mean threshold.
-Note: Even though concept like SomeUnrelatedConcept is shown in C, it could not be added to the ontology due to the absence of position information. Such concepts can be suggested as possible addition due its repeated arrival as evidence and a human can decide if this concept is to be added to the ontology.
+Note: Even though concept like SomeUnrelatedConcept is shown in C, it could not be added to the ontology due to the absence of position information. Such concepts can be suggested as possible addition due its repeated arrival as evidence and a human can decide if this concept is to be added to the ontology. Instead, the user may decide to make the addition automatic by the machine.
 Concepts ElectricityService and NaturalGasService has its mean decayed below threshold mean value (0.3, set in the properties file) and hence removed from the ontology.

@@ Line 14: / Line 14: @@
 ===Concept Removal===
 [[Image:concept-removal-full2.png|600px|alt=Ontology Expansion for an incoming Evidence|Ontology Expansion for an incoming Evidence]]
 ===Ignore Evidence===

@@ Line 16: / Line 16: @@
 ===Ignore Evidence===
-An evidence is ignored iff, Constraints do not allow expansion of the ontology and support associated with the evidence is lower than all the concepts in the ontology. </br>
+An evidence is ignored iff, Constraints do not allow expansion of the ontology and support associated with the evidence is lower than all the concepts in the ontology.
 This happens when the ontology has expanded to it's maximum bound by its constraints.