The retrieval process relies on the vector space model ( Salton , 1989 ) , with the cosine measure expressing the similarity between a query and a document .
automatic text processing the transformation analysis and retrieval ofinformation by computer
Gerard Salton
It crawls text/HTML files , produces an inverted file index , and assigns salience weights to terms and documents based on a simple tf-idf metric . The retrieval process relies on the vector space model ( Salton , 1989 ) , with the cosine measure expressing the similarity between a query and a document . The search engine produces a ranked output of documents .
The retrieval process relies on the vector space model ( @@CITATION ) , with the cosine measure expressing the similarity between a query and a document .