2006-05-25__coi-semdis

Semantic Analytics on Social Networks: Experiences in Addressing the Problem of Conflict of Interest Detection World Wide Web 2006 Conference May 23-27, Edinburgh, Scotland, UK This work is funded by NSF-ITR-IDM Award#0325464 titled '‘ SemDIS : Discovering Complex Relationships in the Semantic Web ’ and partially by ARDA Boanerges Aleman-Meza 1 , Meenakshi Nagarajan 1 , Cartic Ramakrishnan 1 , Li Ding 2 , Pranam Kolari 2 , Amit P. Sheth 1 , I. Budak Arpinar 1 , Anupam Joshi 2 , Tim Finin 2 1 LSDIS lab Computer Science University of Georgia, USA 2 Department of Computer Science and Electrical Engineering 2 University of Maryland, Baltimore County, USA

Outline ,[object Object],[object Object],[object Object]

Conflict of Interest (COI) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Scenario for COI Detection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conflict of Interest ,[object Object],Verma Sheth Miller Aleman-M. Thomas Arpinar

Social Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Our Experiences: Multi-step Process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Our Experiences: Multi-step Process ,[object Object],[object Object],[object Object]

FOAF – Friend of a Friend ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DBLP ( ) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Combined Dataset of FOAF+DBLP ,[object Object],[object Object],[object Object]

[object Object],[object Object],Person Entities from two Sources

Merging Person Entities ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Syntactic matches DBLP Researcher Amit P. Sheth UGA Marek Rusinkiewicz Steefen Staab John Miller http://www.informatik.uni-trier.de/~ley /db/indices/a-tree/s/Sheth:Amit_P=.html Dblp homepage http://lsdis.cs.uga.edu/~amit/ coauthors homepage label FOAF Person Carole Goble Ramesh Jain John A. Miller Amit Sheth Professor 9c1dfd993ad7d1852e80ef8c87fac30e10776c0c http://www.semagix.com http://lsdis.cs.uga.edu http://lsdis.cs.uga.edu/~amit affiliation friends Workplace homepage label title homepage mbox_shasum

… with Attribute Weights DBLP Researcher Amit P. Sheth UGA Marek Rusinkiewicz Steefen Staab John Miller http://www.informatik.uni-trier.de/~ley /db/indices/a-tree/s/Sheth:Amit_P=.html Dblp homepage http://lsdis.cs.uga.edu/~amit/ coauthors homepage label FOAF Person Carole Goble Ramesh Jain John A. Miller Amit Sheth Professor 9c1dfd993ad7d1852e80ef8c87fac30e10776c0c http://www.semagix.com http://lsdis.cs.uga.edu http://lsdis.cs.uga.edu/~amit affiliation friends Workplace homepage label title homepage mbox_shasum The uniqueness property of the Mail box and homepage values give those attributes more weight

Relationships with other Entities DBLP Researcher Amit P. Sheth UGA Marek Rusinkiewicz Steefen Staab John Miller http://www.informatik.uni-trier.de/~ley /db/indices/a-tree/s/Sheth:Amit_P=.html Dblp homepage http://lsdis.cs.uga.edu/~amit/ coauthors homepage label FOAF Person Carole Goble Ramesh Jain John A. Miller Amit Sheth Professor 9c1dfd993ad7d1852e80ef8c87fac30e10776c0c http://www.semagix.com http://lsdis.cs.uga.edu http://lsdis.cs.uga.edu/~amit affiliation friends Workplace homepage label title homepage mbox_shasum A coauthor who is also listed as a friend

Propagating Disambiguation Decisions ,[object Object],[object Object],DBLP Researcher Marek Rusinkiewicz Steefen Staab John Miller coauthors FOAF Person Carole Goble Ramesh Jain John A. Miller friends

Results of Disambiguation Process ,[object Object],[object Object],[object Object],49 205 379 DBLP 38,015 Person entities 21,307 Person entities FOAF

Assigning weights to relationships ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Assigning weights to relationships ,[object Object],Verma Sheth Miller Aleman-M. Thomas Arpinar FOAF ‘knows’ relationship weighted with 0.5 (not symmetric)

Assigning weights to relationships ,[object Object],[object Object],[object Object],Sheth Oldham co-author co-author 1 / 124 1 / 1

Our Experiences: Multi-step Process ,[object Object],[object Object]

Semantic Analytics for COI Detection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

COI - Connecting the dots ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Case 1: A and B are Directly Related ,[object Object],[object Object],Sheth Oldham co-author co-author 1 / 124 1 / 1

Case 2: A and B are Indirectly Related ,[object Object],Verma Sheth Miller Aleman-M. Thomas Arpinar Number of co-authors in common > 10 ? If so, then COI is: Medium Otherwise, depends on weight

Case 3: A and B are Indirectly Related ,[object Object],Verma Sheth Miller Aleman-M. Thomas Arpinar COI Level is set to: Low (in most cases, it can be ignored) Doshi

Visualization ,[object Object],[object Object]

Evaluating COI Detection Results ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Examples of COI Detection Wolfgan Nejdl, Less Carr Low level of potential COI 1 collaborator in common (Paul De Bra co-authored once with Nejdl and once with Carr) Stefan Decker, Nicholas Gibbins Medium level of potential COI 2 collaborators in common (Decker and Motta co-authored in two occasions, Decker and Brickley co-authored once, Motta and Gibbins co-authored once, Brickley and Motta never co-authored, but Gibbins (foaf)-knows Brickley) Demo at http://lsdis.cs.uga.edu/projects/semdis/coi/ or, search for: coi semdis

Evaluation Demo at http://lsdis.cs.uga.edu/projects/semdis/coi/ or, search for: coi semdis Underlined : Confious would have failed to detect COI

Our Experiences: Discussion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Our Experiences: Discussion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… Our Experiences: Discussion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What do we demonstrate wrt SW ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Our Contributions ,[object Object],[object Object],[object Object],[object Object]

Data, demos, more publications at SemDis project web site, http://lsdis.cs.uga.edu/projects/semdis/ Thanks! Questions

References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2006-05-25__coi-semdis

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2006-05-25__coi-semdis