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An Efficient Ontology-Based Expert Peering System Tansu Alpcan, Christian Bauckhage, and Sachin Agarwal
 

Summary: An Efficient Ontology-Based Expert Peering System
Tansu Alpcan, Christian Bauckhage, and Sachin Agarwal
Deutsche Telekom Laboratories
10587 Berlin, Germany
(tansu.alpcan, christian.bauckhage, sachin.agarwal)@telekom.de
Abstract. This paper proposes a novel expert peering system for information ex-
change. Our objective is to develop a real-time search engine for an online com-
munity where users can query experts, who are simply other participating users
knowledgeable in that area, for help on various topics. We consider a graph-based
scheme consisting of an ontology tree where each node represents a (sub)topic.
Consequently, the fields of expertise or profiles of the participating experts cor-
respond to subtrees of this ontology. Since user queries can also be mapped to
similar tree structures, assigning queries to relevant experts becomes a problem
of graph matching. A serialization of the ontology tree allows us to use simple
dot products on the ontology vector space effectively to address this problem. As
a demonstrative example, we conduct extensive experiments with different pa-
rameterizations. We observe that our approach is efficient and yields promising
results.
1 Introduction
Document retrieval studies the problem of matching user queries to a given set of typi-

  

Source: Alpcan, Tansu - Deutsche Telekom Laboratories & Technische Universitšt Berlin

 

Collections: Engineering