Wi-Fi-based indoor positioning offers significant opportunities for numerous applications.
Examining the Wi-Fi positioning systems, it was observed that hundreds of variables were …

In this paper, we aim to tackle the problem of discovering dynamic communities in weighted
graph streams, especially when the underlying social behavior of individuals varies …

Automatic aggregation of similar words into semantically related groups (or clusters) is of
interest to many natural language processing (NLP) applications. Extracting semantically …

This document is the manuscript presented in order to obtain the" Habilitation à Diriger des
Recherches" of Sorbonne University (France), prepared at ISEP Engineering School where I …