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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)
At the present time the distinction between compatible versus incompatible co-hyponyms and polysemy versus homonymy is not expressible in WordNet. We aim to enhance WordNet's expressiveness, through GL inheritance patterns. Hyponymy will then be reflected in the qualia structures shared by the hyponyms and the hyperonym.
This paper presents a strategy that aims to efficiently avoid the generation of logically equivalent formulas that arise in scope processing applications. Constraint based semantic underspecification formalisms may be extended to include an additional scoping restriction that constrains the set of possible dis-ambiguations, straightforwardly avoiding the… (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 reports the current Portuguese WordNet (WordNet.PT) research and development directions, which mainly regard the enrichment of the WordNet model with event and argument structures (section 1), the codification of cross-part-of speech relations (section 2) and the exploitation of WordNet.PT in concrete applications (section 3).
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)
Model checking for First Order Logic is a computationally demanding task. Matters become worse in systems that typically yield fairly large and complex formulas, and that also include the representation of pluralities. This is the case of Discourse Representation Theory (Kamp and Reyle 1993), in which representations encode discourse chunks and deal with… (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)