Un nouveau passage à l'échelle en recherche d'information

the quantity of numerised information that is being produced and consulted daily has considerably increased over the last few years; it is much more heteregeneous too. The quality and the quantity of processing that can be applied to sources of information is inherently dependent on their sizes as well as the expectations of the users. This paper surveys some of the main problems that are directly related to the increase in size and variety of the collections of data. It also indicates some research issues in order to answer a seemingly new “scale up” problem in information management. MOTS-CLÉS : recherche d’information, Toile, passage à l’échelle, efficience, efficacité.