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The web has become a very important source of information for users (students, researchers, general public, etc.) and commercial enterprises. This propulsion of data is related to the diversity of requests for information and the need for versatile knowledge. Access to digital data via web services is facilitated by search tools. Following a request from the user, the search engine has a long list of informational responses, but often containing parasitic pages. Although before the appearance of the web, the searc...

Increasing the production of unstructured information on the Web requires further analysis of the query component of information retrieval systems. The problem concerns the extraction of knowledge from the "raw query" formulated during an interrogation of the index databases of the Web which evolves constantly with the multiplication of the data. The activity of retrieving information from the initial query makes it possible to understand the information extraction (or behavioral) capabilities of the user on the W...