Les héméronymes. Ces évènements qui font date, ces dates qui deviennent évènements

Fouille d'opinion : ces mots qui changent de polarité selon le domaine

Sentiment is expressed differently in different domains. For instance, words which are used in both domains can change their polarity. In this article, we present a study on these multi-polarity words. We first show that these multi-polarity words are actually used by automatic opinion classifiers and affect their performances: the classification performance improves if the multi-polarity words...

Des grammaires de graphes contextuelles qui charactérisent les langages contextuels

Deterministic graph grammars generate a family of infinite graphs which characterize context-free (word) languages. In this paper we presents a context-sensitive extension of these grammars. We achieve a characterization of context-sensitive (word) languages. We show that this characterization is not straightforward and that unless having some rigorous restrictions, contextual graph grammars ge...

Ppcdt / Qui / 58985 / 2004 Pi

I became PI for this project in August 2006, following the sad loss of Professor António Xavier. At the time, Pedro Quintas was employed by this project as a BI and he had been given extensive training in biophysical methods. Our first priority was the production of a series of mutants of cytochrome c” from Methylophilus methylotrophus designed to probe the mechanism of ligand exchange. Despite...

Approximating the Limiting Qui ksort

L'arbre qui cache la forêt

Le lupus est une pathologie chronique, qui évolue par poussées. Son expression clinique est très polymorphe et chaque symptôme peut être inaugural. Il peut débuter dès l'enfance, ces formes sont rares et de pronostic sévère. Le déficit en fractions du complément constitue l'un des principaux facteurs génétiques prédisposant au lupus érythémateux systémique. Nous rapportons un cas de lupus éryth...