Enhancing the Relevance of Semantic Web Information Retrieval Results Using  Extension Theory By  S.Nirmal Chander, P.Ram ...
Introduction The " Semantic Web " is a Web that includes documents, or portions of documents, describing...
Present Scenario Today’s information retrieval system depends on keyword-based search over entire-text data, which has a s...
Ontologies Ontologies provide structured vocabularies that formulate the relationships between different terms, allowing i...
Representation Of Ontologies OWL (Web Ontology Language) is a new formal language for representing ontologies in the Seman...
Ontology Generation In Semantic web based on ontology, it processes the unstructured resources into structured information...
Automatic knowledge acquisition by machines is in future research. We assume the process of ontology learning as semi-auto...
Problem Of Ontology Mismatch The ontology mismatch problems include : Same terms for different concepts. Different terms f...
Conceptualization mismatches occur as a result of semantic differences that may be due to the difference in the conceptual...
Related Works Ontology tree Domain-ontology based semantic integration , such as Gene Ontology and Unified Medical Languag...
Extension Theory It is used to eliminate different kinds of ontology mismatches in semantic web mining. The extension meth...
We suggest the process of semantic conflict elimination be as follows:  (i) Analyze what kind of conflict occurs. (ii) (if...
Extension method acts as a “bridge” between extension theory (Extenics) and its actual application.  Extenics is a new dis...
The basic-element theory includes:  Matter-element  Affair-element  Relation-element. Basic-element concept is the corners...
Universe of Discourse To Eliminate the conflicts, a Universe of Discourse can be generated. The Universe of Discourse is u...
Example Example 1:  When an agent visits some Web pages, it finds out that in one page a sentence says “ I use my Computer...
Future Work After the elimination of conflicts using extension theory, the information from the knowledgebase can be used ...
References [1] Kara, Soner, “An Ontology-Based Retrieval System Using Semantic Indexing” A Thesis Submitted To The Graduat...
[6] K. G Wu, H. B Wang, Z. Z Zhu, “A Computation Method Of Conceptual Similarity In Ontology Based On Semantic Web”, Compu...
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Enhancing Semantic Mining
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Enhancing Semantic Mining

  1. 1. Enhancing the Relevance of Semantic Web Information Retrieval Results Using Extension Theory By S.Nirmal Chander, P.Ram Prasath, V.Santhosh Kumar
  2. 2. Introduction The " Semantic Web " is a Web that includes documents, or portions of documents, describing explicit relationships between things and containing semantic information intended for automated processing by our machines.
  3. 3. Present Scenario Today’s information retrieval system depends on keyword-based search over entire-text data, which has a set of words in a model. Ex : Google, Bing etc. Disadvantage: The semantic meaning of the original text Is lost.
  4. 4. Ontologies Ontologies provide structured vocabularies that formulate the relationships between different terms, allowing intelligent agents (and humans) to interpret their meaning flexibly yet unambiguously.
  5. 5. Representation Of Ontologies OWL (Web Ontology Language) is a new formal language for representing ontologies in the Semantic Web. It plays an important role in helping agents to process information in Web mining.
  6. 6. Ontology Generation In Semantic web based on ontology, it processes the unstructured resources into structured information and adds it to the knowledgebase. Ontologies are (meta) data schemas, providing a controlled lexicons of concepts, each with an explicitly defined and machine understandable semantics
  7. 7. Automatic knowledge acquisition by machines is in future research. We assume the process of ontology learning as semi-automatic with human hands, adopting a approach of balanced cooperative approach for the generation of ontologies for the Semantic Web.
  8. 8. Problem Of Ontology Mismatch The ontology mismatch problems include : Same terms for different concepts. Different terms for the same concepts. Semantically similar attributes which have different meanings in their domains. Attributes which have different generalization and aggregation level. Same attributes, but different data quality requirements, e.g. accuracy.
  9. 9. Conceptualization mismatches occur as a result of semantic differences that may be due to the difference in the conceptualization of the domain. If we ignore and does not repair these mismatches then we might lose the properties that provide a powerful method for enhanced reasoning about concepts in ontologies. Problem Of Ontology Mismatch
  10. 10. Related Works Ontology tree Domain-ontology based semantic integration , such as Gene Ontology and Unified Medical Language System. Domain independent includes InfoSleut, OBSERVE . Disadvantage: Efficiency and comprehensive issues
  11. 11. Extension Theory It is used to eliminate different kinds of ontology mismatches in semantic web mining. The extension methods are the important part of Extenics, which is a new discipline studying objects’ extensibility and the laws and methods of extension to solve contradiction problems
  12. 12. We suggest the process of semantic conflict elimination be as follows: (i) Analyze what kind of conflict occurs. (ii) (if necessary) Represent objects for different concepts by basic elements. (iii) Choose suitable extension methods to eliminate the conflict. Extension Theory
  13. 13. Extension method acts as a “bridge” between extension theory (Extenics) and its actual application. Extenics is a new discipline that studies rules and methods of solving contradiction problems by employing formalized tools, i.e. qualitative analysis and quantitative analysis. Extension Methods
  14. 14. The basic-element theory includes: Matter-element Affair-element Relation-element. Basic-element concept is the cornerstone of Extenics. Extension Methods
  15. 15. Universe of Discourse To Eliminate the conflicts, a Universe of Discourse can be generated. The Universe of Discourse is used in predicate logic to indicate the relevant set of Entities
  16. 16. Example Example 1: When an agent visits some Web pages, it finds out that in one page a sentence says “ I use my Computer to browse Web pages” while in another page a sentence says “ I use my desktop machine to browse Web pages”. The agent could report a conflict.
  17. 17. Future Work After the elimination of conflicts using extension theory, the information from the knowledgebase can be used in a Query Routing System. By doing so, the system can be used in E-Governance for automated complaint(Query) reporting.
  18. 18. References [1] Kara, Soner, “An Ontology-Based Retrieval System Using Semantic Indexing” A Thesis Submitted To The Graduate School Of Natural And Applied Sciences Of Middle East Technical University, July 2010 [2] Jianguo Jiang, Zhongxu Wang, Chunyan Liu, Zhiwen Tan, Xiaoze Chen, Min Li, “The Technology Of Intelligent Information Retrieval Based On The Semantic Web” , 2nd International Conference On Signal Processing Systems(Icsps), 2010. [3] Wang Yong-Gui, Jia Zhen, “Research On Semantic Web Mining”International Conference On Computer Design And Appliations (Iccda),2010. [4] Jing Wen, Shidong Zhang, Zhongmin Yan, “Slco And Dlco: Two Ontologies For Detecting And Resolving Schema And Data-Level Semantic Conflicts”, International Conference On Information And Automation, June 2009. [5] Jessica Seddon Wallack Ramesh Srinivasan, “Local-Global: Reconciling Mismatched Ontologies In Development Information Systems”,Proceedings Of The 42nd Hawaii International Conference On SystemSciences, 2009 .
  19. 19. [6] K. G Wu, H. B Wang, Z. Z Zhu, “A Computation Method Of Conceptual Similarity In Ontology Based On Semantic Web”, Computer Science, Vol. 35, No. 5, Pp. 123–125, 2008. [7] Sudha Ram, Jinsoo Park, “Semantic Conflict Resolution Ontology(Scrol): An Ontology For Detecting And Resolving Data And Schema- Level Semantic Conflicts”, Ieee Transactions On Knowledge And Data Engineering, Vol. 16, No. 2, February 2004. [8] Cai Wen, Yang Chunyan, Hebin, “Principium Of Extension Logic”,Beijing: Science Press, Ch. 3, 2003. [9] A. Gomez-Perez, M.Fernandez-Lopez, A.Gsmez-Pirez, O. Corcho- Garcia, “Ontological Engineering: With Examples From The Areas Of Knowledge Management, E-Commerce And The. Semantic Web”, Springer Isbn:1- 85253-55j-3 [10] Cai Wen, “ Extension Theory And Its Application* Survey”, Research Institute Of Extention Engineering
  20. 20. Thank You!

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