Bessai, Fatma-Zohra2013-11-252013-11-252011-12http://dl.cerist.dz/handle/CERIST/361This work proposes an approach allowing to automatically select set of non redundant elements of the document that better answers the user’s need formulated through a list of key words.Information RetrievalAggregated searchAggregation of elementsTechnical ReportCERIST-DTISI/RR--11-000000036--dz