Publication Type

Conference Proceeding Article

Version

submittedVersion

Publication Date

11-2006

Abstract

Event detection is a very important area of research that discovers new events reported in a stream of text documents. Previous research in event detection has largely focused on finding the first story and tracking the events of a specific topic. A topic is simply a set of related events defined by user supplied keywords with no associated semantics and little domain knowledge. We therefore introduce the Anticipatory Event Detection (AED) problem: given some user preferred event transition in a topic, detect the occurence of the transition for the stream of news covering the topic. We confine the events to come from the same application domain, in particular, mergers and acquisitions. Our experiments showed that classical cosine similarity method fails for the AED task, whereas our conceptual model-based approach, through the use of domain knowledge and named entity type assignments, seems promising. We show experimentally that an AED voting classifier operating on a vector representation with name entities replaced by types performed AED successfully.

Keywords

Modeling, Voting, Conceptual analysis, Semantics, Keyword, Anticipation, Classification, Similarity, Tracking, Streaming, Information system

Discipline

Databases and Information Systems | Numerical Analysis and Scientific Computing

Publication

Conceptual Modeling - ER 2006: 25th International Conference on Conceptual Modeling, Tucson, AZ, November 6-9, 2006: Proceedings

Volume

4215

First Page

168

Last Page

181

ISBN

9783540472278

Identifier

10.1007/11901181_14

Publisher

Springer Verlag

City or Country

Tucson, AZ

Additional URL

http://doi.org/10.1007/11901181_14

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