This article discusses a new document indexing scheme for information retrieval. For a structured (e.g., scientific) document, Pasi et al. proposed varying weights to different sections according to their importance in the document. This concept is extended here to unstructured documents. Each sentence in a document is initially assigned weights (significance in the document) with the help of a...

Multilingual Information Retrieval usually forces a choice between free text indexing or indexing by means of multilingual thesaurus. However, since they share the same objectives, synergy between both approaches is possible. This paper shows a retrieval framework that make use of terminological information in free-text indexing. The Automatic Terminology Extraction task, which is used for thes...

Information retrieval (IR) is a user approach to obtain relevant information which meets needs with the help of a IR system (IRS). However, the IRS shows certain differences between user relevance and system relevance. These gaps are essentially related to the imperfection of the indexing process (as approach related to the IR), to problems related to the misunderstanding of the natural languag...

THEVARIOUS I N D E X I N G S Y S T E M S presently in existence have one basic goal: to provide researchers with access to the information they require. The stimulus for development of more sophisticated systems has, of course, been the need to probe the growing mass of information documents, Developers of indexing systems are, consequently, concerned not only with establishing a tool which pro...

In this work I propose to describe a new model of information retrieval. I study the effects of using weighted index terms recognition mistakes in a document indexing system and I evaluate indexing performance when short and long requests are used. The effect of weighting index terms in the document collection and in the requests is analyzed. Given the typical requests submitted to term indexin...

Physicians often seek helps from scientific medical literature for better diagnoses and treatment, especially when dealing with intractable cases. The task is becoming more and more difficult as thousands of new articles are published every month. It’s quite challenging and helpful to assist physicians locating highly relevant articles in limited time. In this study, targeting at fulfilling the...

Supported by Natural Science Foundation of China( and 973 project (G1998030507) Abstract Traditional indexing methods often record physical positions for the specified words, thus fail to recognize context information. We suggest that Chinese text index should work on the layer of sentences. This paper presents an indexing method based on sentences and demonstrates how to use this method to hel...

In information retrieval on classical structured documents, one problem consists in browsing the result space using the structure of the documents. Taking into account other links between doxels increases this problem. In this article, we consider relative exhaustivity and relative specificity values computed on non compositional linked doxels to index the corpus ; adding this information to th...

The time relationships which characterize the intermedia synchronization in a multimedia stream affect network performance. For this purpose in this paper a new parameter is introduced, here referred to as the Intermedia Synchronization Index (ISI), which measures the intermedia relationships in a multimedia stream. The parameter is defined as the cross-covariance between the monomedia streams ...

This paper describes the WHERE system, an approach to a distributed indexing service for document search on the Internet based upon an architecture of centroids. Numerical data, produced with the aid of Information Retrieval techniques, in the form of a weighing measure, are added to the Whois++ centroids enabling ranked results to be delivered to clients, which they use not only for presenting...