A semantic structure to improve information retrieval using XML

International audienceNowadays the information stored in the digital libraries is not completely described, so this information is not really used. The description of information by using metadata seems a good solution to permit the users to find pertinent information. Our proposal is based on the creation and the insertion of new metadata within the document as «semantic tags». These metadata can describe, in our case, the doctoral theses, by taking advantage of XML technology to structure digital documents