Augmenting the power of LSI in text retrieval: Singular value rescaling

  • Authors:
  • Hua Yan;William I. Grosky;Farshad Fotouhi

  • Affiliations:
  • CIS Department, Borough of Manhattan Community College, The City University of New York, New York, NY 10007, United States;Department of Computer and Information Science, University of Michigan-Dearborn, Dearborn, MI 48128, United States;Department of Computer Science, Wayne State University, Detroit, MI 48002, United States

  • Venue:
  • Data & Knowledge Engineering
  • Year:
  • 2008

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Abstract

This paper presents an analysis of several different LSI (latent semantic indexing) query approaches and proposes a novel rescaling technique, namely singular value rescaling (SVR). Experiments on a standardized TREC data set confirmed the effectiveness of SVR, showing an improvement ratio of 5.9% over the best conventional LSI query approach. In addition, we also compared SVR with another scaling technique in text retrieval called iterative residual rescaling (IRR). Experiments on TREC data set show that SVR performs better than IRR.