A Comparative Study on Approaches of Vector Space Model in Information Retrieval
نویسندگان
چکیده
The vector space model is one of the classical and widely applied information retrieval models to rank the web page based on similarity values. The retrieval operations consist of cosine similarity function to compute the similarity values between a given query and the set of documents retrieved and then rank the documents according to the relevance. In this paper, we are presenting different approaches of vector space model to compute similarity values of hits from search engine for given queries based on terms weight. In order to achieve the goal of an effective evaluation algorithm, our work intends to extensive analysis of the main aspects of Vector space model, its approaches and provides a comprehensive comparison for TermCount Model, Tf-Idf model and Vector space model based on normalization.
منابع مشابه
Improved Skips for Faster Postings List Intersection
Information retrieval can be achieved through computerized processes by generating a list of relevant responses to a query. The document processor, matching function and query analyzer are the main components of an information retrieval system. Document retrieval system is fundamentally based on: Boolean, vector-space, probabilistic, and language models. In this paper, a new methodology for mat...
متن کاملImproved Skips for Faster Postings List Intersection
Information retrieval can be achieved through computerized processes by generating a list of relevant responses to a query. The document processor, matching function and query analyzer are the main components of an information retrieval system. Document retrieval system is fundamentally based on: Boolean, vector-space, probabilistic, and language models. In this paper, a new methodology for mat...
متن کاملA Comparative study on organizational positions of health management and information technology department of hospitals and proposing a model for Iran
Introduction: Human resources in hospitals are one of the most important factors that play a key role in the information management plans success. This study was carried out with the aims of proposing an organizational jobs and positions model for health management and information technology department in Iranian hospitals. Methods: Our descriptive study was completed in two phases. In the firs...
متن کاملQEA: A New Systematic and Comprehensive Classification of Query Expansion Approaches
A major problem in information retrieval is the difficulty to define the information needs of user and on the other hand, when user offers your query there is a vast amount of information to retrieval. Different methods , therefore, have been suggested for query expansion which concerned with reconfiguring of query by increasing efficiency and improving the criterion accuracy in the information...
متن کاملWord Pairs in Language Modeling for Information Retrieval
Previous language modeling approaches to information retrieval have focused primarily on single terms. The use of bigram models has been studied, but the restriction on word order and adjacency may not be justified for information retrieval. We propose a new language modeling approach to information retrieval that incorporates lexical affinities, or pairs of words that occur near each other, wi...
متن کامل