Rui Pedro Chaves

Learn More
This paper argues that wordnets, being concept-based computational lexica, should include information on event and argument structures. This general approach is relevant both for allowing computational grammars to cope with a number of different lexical semantics phenomena, as well as for enabling inference applications to obtain finer-grained results. We(More)
This paper examines English unbounded dependency constructions and concludes that the syntactic mechanism responsible for extraction operates in the same way in all constructions, regardless of the structures being subordinate or coordinate. In other words, this work argues that there is a general and fully uniform mechanism behind the linkage of 'gaps' and(More)
Proposals for text classification and information retrieval have been recently presented making use of the WordNet ontology. Generally, this methodology requires statistical induction of synset clusters and entails costly training of specific key domains. The present proposal intends to show that a simple recursive evaluation procedure and WordNet are rich(More)
This paper considers the underspecification of distributive and collective readings of plural NPs in Discourse Representation Theory (Kamp and Reyle 1993) and Head-Driven Phrase Structure Grammar (Pollard and Sag 1994). We address some shortcomings in previous approaches in the underspecification literature, namely issues related to the assumption that(More)
Non-constituent Coordination phenomena have for a long time eluded a formally precise uniform account in Linguistic Theory, including Constraint-based grammar formalisms. This work provides a novel approach to Gapping phenomena (Ross, 1970) by extending recent Linearization-based accounts of NCC in Head-driven Phrase Structure Grammar (Pollard and Sag,(More)