Augmenting the power of the various versions of LSI used in document retrieval

Abstract

This paper clarifies the apparent randomness and confusion in the choice of different query methods using LSI to be found in the current text and image retrieval literature. We also propose and test some modified query approaches using the novel technique of singular value rescaling (SVR). Experiments on standardized TREC data set confirmed the effectiveness of SVR, showing an improvement ratio of 5.6% over the best conventional LSI query approach. © Springer-Verlag Berlin Heidelberg 2005.