Presentation is loading. Please wait.

Presentation is loading. Please wait.

Incorporating Participant Reputation in Community-driven Question Answering Systems Liangjie Hong, Zaihan Yang and Brian D. Davison Computer Science and.

Published byCarina Wolfrey Modified over 10 years ago

Similar presentations

Presentation on theme: "Incorporating Participant Reputation in Community-driven Question Answering Systems Liangjie Hong, Zaihan Yang and Brian D. Davison Computer Science and."— Presentation transcript:

1 Incorporating Participant Reputation in Community-driven Question Answering Systems Liangjie Hong, Zaihan Yang and Brian D. Davison Computer Science and Engineering Lehigh University Bethlehem, PA USA

2 Liangjie Hong, Zaihan Yang and Brian D. Davison Why Community-driven Question & Answering ? SIN August 2009

3 Liangjie Hong, Zaihan Yang and Brian D. Davison Why Community-driven Question & Answering ? SIN August 2009 natural language vs. short queries

4 Liangjie Hong, Zaihan Yang and Brian D. Davison Why Community-driven Question & Answering ? SIN August 2009 natural language vs. short queries best answers vs. relevance

5 Liangjie Hong, Zaihan Yang and Brian D. Davison Why Community-driven Question & Answering ? SIN August 2009 natural language vs. short queries best answers vs. relevance user interactions!

6 Liangjie Hong, Zaihan Yang and Brian D. Davison Why Community-driven Question & Answering ? SIN August 2009 natural language vs. short queries best answers vs. relevance user interactions! 23 millions resolved questions!

7 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009

8 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 1 – 10 of 17, 702

9 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Resolved

10 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Earth Science & Geology Physics

11 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Problems

12 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 same or similar questions different category different time Problems

13 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Problems Read Read them all? Trust Trust them all?

14 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Finding high quality answers

15 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Finding high quality answers content user reputation

16 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Finding high quality answers content user reputationuser reputation

17 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 HITS-like scheme User Answerer Questioner

18 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 HITS-like scheme User questioner - hub answerer - authority

19 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 PageRank-like scheme User

20 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 PageRank-like scheme User random jump ?

21 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 PageRank-like scheme User

22 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 PageRank-like scheme User probability of interaction

23 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Incorporating topics Profile User Profile

24 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Incorporating topics User

25 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Incorporating topics α -> stay 1- α -> jump topic User

26 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Incorporating topics α -> stay 1- α -> jump topic d -> follow link 1-d -> random jump User

27 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Incorporating topics User α -> stay 1- α -> jump topic d -> follow link 1-d -> random jump

28 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Other heuristics Z-score Linear combination

29 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Dataset & Evaluation Yahoo Answers! 14,122 questions + 45,814 answers 12,731 users Strict & Relaxed Precision@1, MRR, Precision@10, MAP BM25 + User Reputation

30 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Strict Evaluation

31 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Relaxed Evaluation

32 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 Relaxed Evaluation

33 Liangjie Hong, Zaihan Yang and Brian D. Davison SIN August 2009 user reputation helps retrieval topic modeling makes sense but… question answering link direction Conclusion

34 SIN August 2009 Thank you! Questions? Contact Info: Liangjie Hong hongliangjie@lehigh.edu WUME Laboratory Computer Science and Engineering Lehigh University Bethlehem, PA 18015 USA Liangjie Hong, Zaihan Yang and Brian D. Davison

Download ppt "Incorporating Participant Reputation in Community-driven Question Answering Systems Liangjie Hong, Zaihan Yang and Brian D. Davison Computer Science and."

Similar presentations

Performance in Decentralized Filesharing Networks Theodore Hong Freenet Project.

Performance in Decentralized Filesharing Networks Theodore Hong Freenet Project.
Topical TrustRank: Using Topicality to Combat Web Spam Baoning Wu, Vinay Goel and Brian D. Davison Lehigh University, USA.

Topical TrustRank: Using Topicality to Combat Web Spam Baoning Wu, Vinay Goel and Brian D. Davison Lehigh University, USA.
Jeopardy Q 1 Q 6 Q 11 Q 16 Q 21 Q 2 Q 7 Q 12 Q 17 Q 22 Q 3 Q 8 Q 13

Jeopardy Q 1 Q 6 Q 11 Q 16 Q 21 Q 2 Q 7 Q 12 Q 17 Q 22 Q 3 Q 8 Q 13
Mark Levene, An Introduction to Search Engines and Web Navigation © Pearson Education Limited 2005 Slide 4.1 Chapter 4 : Searching the Web The mechanics.

Mark Levene, An Introduction to Search Engines and Web Navigation © Pearson Education Limited 2005 Slide 4.1 Chapter 4 : Searching the Web The mechanics.
1 Topic Distributions over Links on Web Jie Tang 1, Jing Zhang 1, Jeffrey Xu Yu 2, Zi Yang 1, Keke Cai 3, Rui Ma 3, Li Zhang 3, and Zhong Su 3 1 Tsinghua.

1 Topic Distributions over Links on Web Jie Tang 1, Jing Zhang 1, Jeffrey Xu Yu 2, Zi Yang 1, Keke Cai 3, Rui Ma 3, Li Zhang 3, and Zhong Su 3 1 Tsinghua.
Context-Sensitive Query Auto-Completion AUTHORS:NAAMA KRAUS AND ZIV BAR-YOSSEF DATE OF PUBLICATION:NOVEMBER 2010 SPEAKER:RISHU GUPTA 1.

Context-Sensitive Query Auto-Completion AUTHORS:NAAMA KRAUS AND ZIV BAR-YOSSEF DATE OF PUBLICATION:NOVEMBER 2010 SPEAKER:RISHU GUPTA 1.
A Human-Centered Computing Framework to Enable Personalized News Video Recommendation (Oh Jun-hyuk)

A Human-Centered Computing Framework to Enable Personalized News Video Recommendation (Oh Jun-hyuk)
Introduction Distance-based Adaptable Similarity Search

Introduction Distance-based Adaptable Similarity Search
Learning to Recommend Questions Based on User Ratings Ke Sun, Yunbo Cao, Xinying Song, Young-In Song, Xiaolong Wang and Chin-Yew Lin. In Proceeding of.

Learning to Recommend Questions Based on User Ratings Ke Sun, Yunbo Cao, Xinying Song, Young-In Song, Xiaolong Wang and Chin-Yew Lin. In Proceeding of.
Data Mining and Machine Learning Lab eTrust: Understanding Trust Evolution in an Online World Jiliang Tang, Huiji Gao and Huan Liu Computer Science and.

Data Mining and Machine Learning Lab eTrust: Understanding Trust Evolution in an Online World Jiliang Tang, Huiji Gao and Huan Liu Computer Science and.
A Vector Space Model for Automatic Indexing

A Vector Space Model for Automatic Indexing
Application of Ensemble Models in Web Ranking

Application of Ensemble Models in Web Ranking
Crawling, Ranking and Indexing. Organizing the Web The Web is big. Really big. –Over 3 billion pages, just in the indexable Web The Web is dynamic Problems:

Crawling, Ranking and Indexing. Organizing the Web The Web is big. Really big. –Over 3 billion pages, just in the indexable Web The Web is dynamic Problems:
22 May 2006 Wu, Goel and Davison Models of Trust for the Web (MTW) WWW2006 Workshop L EHIGH U NIVERSITY.

22 May 2006 Wu, Goel and Davison Models of Trust for the Web (MTW) WWW2006 Workshop L EHIGH U NIVERSITY.
Dialogue – Driven Intranet Search Suma Adindla School of Computer Science & Electronic Engineering 8th LANGUAGE & COMPUTATION DAY 2009.

Dialogue – Driven Intranet Search Suma Adindla School of Computer Science & Electronic Engineering 8th LANGUAGE & COMPUTATION DAY 2009.
Explorations in Tag Suggestion and Query Expansion Jian Wang and Brian D. Davison Lehigh University, USA SSM 2008 (Workshop on Search in Social Media)

Explorations in Tag Suggestion and Query Expansion Jian Wang and Brian D. Davison Lehigh University, USA SSM 2008 (Workshop on Search in Social Media)
Expertise Networks in Online Communities: Structure and Algorithms Jun Zhang Mark S. Ackerman Lada Adamic University of Michigan WWW 2007, May 8–12, 2007,

Expertise Networks in Online Communities: Structure and Algorithms Jun Zhang Mark S. Ackerman Lada Adamic University of Michigan WWW 2007, May 8–12, 2007,
Interfaces for Selecting and Understanding Collections.

Interfaces for Selecting and Understanding Collections.
6/16/20151 Recent Results in Automatic Web Resource Discovery Soumen Chakrabartiv Presentation by Cui Tao.

6/16/20151 Recent Results in Automatic Web Resource Discovery Soumen Chakrabartiv Presentation by Cui Tao.
Retrieval Evaluation: Precision and Recall. Introduction Evaluation of implementations in computer science often is in terms of time and space complexity.

Retrieval Evaluation: Precision and Recall. Introduction Evaluation of implementations in computer science often is in terms of time and space complexity.

Similar presentations

Ads by Google