A novel document retrieval method using the discrete wavelet transform

摘要: Current information retrieval methods either ignore the term positions or deal with exact positions; former can be seen as coarse document resolution, latter fine resolution. We propose a new spectral-based method that is able to utilize many different levels of resolution by examining patterns occur in documents. To do this, we take advantage multiresolution analysis properties wavelet transform. show are achieve higher precision when compared vector space and proximity methods, while producing fast query times using compact index.