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Named Entity Disambiguation by Leveraging Wikipedia Semantic Knowledge

Named Entity Disambiguation by Leveraging Wikipedia Semantic Knowledge. Presenter : Jiang-Shan Wang Authors : Xianpei Han, Jun Zhao. 國立雲林科技大學 National Yunlin University of Science and Technology. CIKM 2009. Outline. Motivation Objective Method Experiment Conclusion Comments.

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Named Entity Disambiguation by Leveraging Wikipedia Semantic Knowledge

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  1. Named Entity Disambiguation by Leveraging Wikipedia Semantic Knowledge Presenter : Jiang-Shan Wang Authors : Xianpei Han, Jun Zhao 國立雲林科技大學 National Yunlin University of Science and Technology CIKM 2009

  2. Outline • Motivation • Objective • Method • Experiment • Conclusion • Comments

  3. Motivation • The traditional bag of words (BOW) based methods ignores: • Semantic relations • Associative relatedness • Polysemy • Synonymy • The social network based methods: • Only capture a special type of semantic relations • Limited coverage

  4. Objective To proposes a disambiguation method using Wikipedia as background knowledge.

  5. Method • Wikipedia semantic knowledge • Wikipedia concepts • Surface forms of Wikipedia concepts • Semantic relations between Wikipedia concepts • Semantic relatedness between Wikipedia concepts • Named entity disambiguation • Representing name observation • Measuring the similarity between name observations • Grouping name observations

  6. Method Wikipedia concepts Surface forms of Wikipedia concepts

  7. Method Semantic relations between Wikipedia concepts Semantic relatedness

  8. Method • Representing name observation • Surface form identification • Mapping surface forms to concepts • Concepts weight and pruning

  9. Method • Measuring the similarity

  10. Method • Measuring the similarity

  11. Method • Grouping name observations

  12. Experiment

  13. Experiment

  14. Experiment WePS1 WePS2

  15. Conclusion • This method can achieve appealing results: • It get 10.7% improvement over the traditional BOW based method • It get 16.7% improvement over the traditional social network based method

  16. Comments • Advantage • Good semantic knowledge base. • Drawback • Application • Information retrieval • Disambiguation

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