Claire Gardent

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We present a noun phrase coreference system that extends the work of Soon et al. (2001) and, to our knowledge, produces the best results to date on the MUC6 and MUC-7 coreference resolution data sets — F-measures of 70.4 and 63.4, respectively. Improvements arise from two sources: extra-linguistic changes to the learning framework and a large-scale(More)
The incremental algorithm introduced in (Dale and Reiter, 1995) for producing distinguishing descriptions does not always generate a minimal description. In this paper, I show that when generalised to sets of individuals and disjunctive properties, this approach might generate unnecessarily long and ambiguous and/or epistemically redundant descriptions. I(More)
It is generally agreed that discourse has a recursive structure and that this structure aaects the semantic interpretation of discourse. Despite this consensus however, few proposals give a precise specii-cation of how the syntax of discourse relates to its semantics. In this paper, I use a variant of Feature-Based Tree Adjoining Grammars to construct(More)
Natural language has a high paraphrastic power yet not all paraphrases are appropriate for all contexts. In this paper, we present a TAG based surface realiser which supports both the generation and the selection of paraphrases. To deal with the combinarial explosion typical of such an NP-complete task, we introduce a number of new optimisations in a(More)
Both in computational linguistics and in formal semantics, descriptions have been used which are stated in terms of dominance. Yet the issue of how such descriptions are processed has been little explored. In this paper, we present a constraint-based treatment of descriptions and apply it to the description-based treatment of discourse advocated in GW98a].
In this paper we introduce a modal language L T for imposing constraints on trees, and an extension LT(L r) for imposing constraints on trees decorated with feature structures. The motivation for introducing these languages is to provide tools for formalising grammatical frameworks perspicuously, and the paper illustrates this by showing how the leading(More)
We present a novel approach to the automatic acquisition of a Verbnet like classification of French verbs which involves the use (i) of a neural clustering method which associates clusters with features, (ii) of several supervised and unsupervised evaluation metrics and (iii) of various existing syntactic and semantic lexical resources. We evaluate our(More)
A compositional theory of meaning is one in which the meaning of a complex expression is a function of the meanings of its constituents. As argued in :lanssen (1983), there are philosophicM, practical and technical advantages in having a compositional semantics for natural language. In particular, a compositional semantics is more likely to be implementable(More)
While the Web of data is attracting increasing interest and rapidly growing in size, the major support of information on the surface Web are still multimedia documents. Semantic annotation of texts is one of the main processes that are intended to facilitate meaning-based information exchange between computational agents. However, such annotation faces(More)