The detection of new information in a document stream is an important component of many potential applications. In this paper, a new novelty detection approach based on the identi...
Finding information in a peer-to-peer system currently requires either a costly and vulnerable central index, or flooding the network with queries. In this paper we introduce the...
In this paper we focus on the following problem in information management: given a large collection of recorded information and some knowledge of the process that is generating th...
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...
In this paper, we assess the impact of using thesaurus-based query expansion methods, at the Information Retrieval (IR) stage of a Question Answering (QA) system. We focus on expan...