Data Set Used
In this paper, we propose a generalization of Centering Theory (CT) (Grosz, Joshi, Weinstein (1995)) called Veins Theory (VT), which extends the applicability of centering rules from local to global discourse. A key facet of the theory involves the identification of <<veins>> over discourse structure trees such as those defined in RST, which delimit domains… (More)
Evaluation campaigns have become an established way to evaluate automatic systems which tackle the same task. This paper presents the first edition of the Anaphora Resolution Exercise (ARE) and the lessons learnt from it. This first edition focused only on English pronominal anaphora and NP coreference, and was organised as an exploratory exercise where… (More)
The way in which discourse features express connections back to the previous discourse has been described in the literature in terms of adjoining at the right frontier of discourse structure. But this does not allow for discourse features that express ez-pectations about what is to come in the subsequent discourse. After characterizing these expectations… (More)
In this paper we describe a method to obtain summaries focussed on chosen characters of a free text. Summaries are extracted from discourse structures, which resemble rhetorical trees. They are obtained by exploiting cohesion and coherence properties of the text. Evaluation intends to evidence the contribution of each module in the final result.
We compare the potential of two classes of linear and hierarchical models of discourse to determine co-reference links and resolve anaphors. The comparison uses a corpus of twenty texts, which were manually annotated for co-reference and discourse structure.
We compare the potential of two classes el' linear and hierarchical models of discourse to determine co-reference links and resolve anaphors. The comparison uses a col pus of thirty texts, which were manually annotated for co-reference and discourse structure.
The fifth QA campaign at CLEF, the first having been held in 2006. was characterized by continuity with the past and at the same time by innovation. In fact, topics were introduced, under which a number of Question-Answer pairs could be grouped in clusters, containing also co-references between them. Moreover, the systems were given the possibility to… (More)
This paper revises notions related to Language Resources and Technologies (LRT), including a brief overview of some resources developed worldwide and with a special focus on Romanian language. It then describes a joined Romanian, Moldavian, English initiative aimed at developing electronically coded resources for Romanian language, tools for their… (More)
In this paper, we outline a theory of referential accessibility called Veins Theory (VT). We show how VT addresses the problem of "left satellites", currently a problem for stack-based models, and show that VT can be used to significantly reduce the search space for antecedents. We also show that VT provides a better model for determining domains of… (More)