Representing the semantics of words is a long-standing problem for the natural language processing community. Most methods compute word semantics given their textual context in large corpora. More recently, researchers attempted to integrate …
Most collaborative filtering systems, such as matrix factorization, use vector representations for items and users. Those representations are deterministic, and do not allow modeling the uncertainty of the learned representation, which can be useful …
La recherche d'information (RI) ad-hoc se heurte à différentes difficultés, notam- ment liées à des discordances de vocabulaire entre requête et documents, ainsi qu'à la prise en compte de dépendances séquentielles entre les termes de la requête. Les …
We address the problem of modeling multiple simultaneous time series where the observations are correlated not only inside each series, but among the different series. This problem happens in many domains such as ecology, meteorology, etc. We propose …
We address the problem of modeling multiple simultaneous time series where the observations are correlated not only inside each series, but among the different series. This problem happens in many domains such as ecology, meteorology, …
Dans cette thèse, nous étudions la sémantique des relations entre les utilisateurs et des forces antagonistes que nous observons naturellement dans diverses relations sociales, comme hostilité ou méfiance. L'étude de ces relations soulève de nombreux …