  In the context of business information systems, e-commerce and access to
knowledge, the relevance of the information provided to use is a key fact to
the success of information systems. Therefore the quality of access is
determined by access to the right information at the right time, at the right
place. In this context, it is important to consider the users needs when access
to information and his contextual situation in order to provide relevant
information, tailored to their needs and context use. In what follows we
describe the prelude to a project that tries to combine all of these needs to
improve information systems.
