Abstract: Provided is a system and related methods for collecting and storing in a local storage the information extracted. The information stored in this step may include data extracted from the user's navigation on websites, data pushed to the user via his subscriptions to social networks, rss feeds, emails, and data representing the interaction of the user with the web browser and its content.

Abstract: The current invention concerns a document search procedure in a distributed information system, containing construction steps of a thematic representation made up of: constructing, on user computers, the thematic categories; constructing at least one grouping index, a first grouping index containing the entries Ei made up of all the access links Ui of the documentary resources, a second grouping index containing the entries Ei made up of all the descriptors Ki of the categories Ci, and the search steps consisting of extracting the grouping index of the categories to establish a suggestion list Sj made up of the access links Uj ordered as a function of a representative score of importance and/or of number of occurrences of the link Uj in the categories Cj.