Prior search result diversification work focuses on achieving topical variety in a ranked list,
typically equally across all aspects. In this paper, we diversify with sentiments according to …

Blogs are one of the main user-generated contents on the web and are growing in number
rapidly. The characteristics of blogs require the development of specialized search methods …

When users investigate a topic, they are often interested in results that are not just relevant,
but also strongly opinionated or covering a range of times. To get such results, users are …

Publish/Subscribe (Pub/Sub) systems have been designed to face the exponential growth of
information published on the Web by subscribing to sources of interest which produce flows …

A user model is a fundamental component in user-centred information retrieval systems. It
enables personalization of a user's search experience. The development of such a model …

This chapter focuses on the way to enhance the relevance of filtering and to integrate such a
process in two different implementations: a centric‐based version and a distributed version …

Search result diversification addresses the problem of queries with unclear information
needs. The aim of using diversification techniques is to find a ranking of documents that …

The goal of a blog retrieval system is to retrieve and rank blogs, as collections of documents,
in response to a given query. Previous studies have shown that diversity among the top …

Je souhaite remercier les membres du Conseil des Jedi, que sont les rapporteurs et
membres du jury, pour le temps passé à étudier mes travaux, et à apporter leur lumière sur …

With the explosion of the amount of information currently available online, locating valuable
or important information can prove out to be an overwhelming task. This abundance of …