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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...

The documents and data used by scientists to "do research" have become digital and the exchanges of these have accelerated since the invention of the web. Accessing, distributing and sharing via the web is today at the heart of the practices of scientists and students. At the beginning, the web was the support and the vector of the diffusion of the documents and remained at the bottom of the documentary databases, in more or less closed systems. The information is interlinked by hypertext or hypermedia relationshi...