Modeling using Term Dependencies and Term Weighting in Information Retrieval Systems

Abstract

The process of information retrieval has become a fact of life because of the great growth of the internet and information. In this paper, retrieval models are discussed. These models are classified according to two different mathematical modeling approaches: term dependency models and term weighting models. Some models assume term independence, while others consider this dependency relation. On the other hand, term weighting is a method that tries to index the document in an effective way. The aim of this paper is to discuss and evaluate different information retrieval models which employ both terms dependence/independence, as well as term weighting.