TAILIEUCHUNG - Báo cáo khoa học: "Towards resolution of bridging descriptions"

We present preliminary results concerning robust techniques for resolving bridging definite descriptions. We report our analysis of a collection of 20 Wall Street Journal articles from the Penn Treebank Corpus and our experiments with WordNet to identify relations between bridging descriptions and their antecedents. | Towards resolution of bridging descriptions Renata Vieira and Simone Teufel Centre for Cognitive Science - University of Edinburgh 2 Buccleuch Place EH8 9LW Edinburgh UK renata simone @ Abstract We present preliminary results concerning robust techniques for resolving bridging definite descriptions. We report our analysis of a collection of 20 Wall Street Journal articles from the Penn Treebank Corpus and our experiments with WordNet to identify relations between bridging descriptions and their antecedents. 1 Background As part of our research on definite description DD interpretation we asked 3 subjects to classify the uses of DDs in a corpus using a taxonomy related to the proposals of Hawkins 1978 Prince 1981 and Prince 1992 . Of the 1040 DDs in our corpus 312 30 were identified as anaphoric same head 492 47 as larger situation unfamiliar Prince s discourse new and 204 20 as bridging references defined as uses of DDs whose antecedents coreferential or not have a different head noun the remaining were classified as idioms or were cases for which the subjects expressed doubt see Poesio and Vieira 1997 for a description of the experiments. In previous work we implemented a system capable of interpreting DDs in a parsed corpus Vieira and Poesio 1997 . Our implementation employed fairly simple techniques we concentrated on anaphoric same head descriptions resolved by matching the head nouns of DDs with those of their antecedents and larger situation unfamiliar descriptions identified by certain syntactic structures as suggested in Hawkins 1978 . In this paper we describe our subsequent work on bridging DDs which involve more complex forms of commonsense reasoning. 2 Bridging descriptions a corpus study Linguistic and computational theories of bridging references acknowledge two main problems in their resolution first to find their antecedents anchors and second to find the relations links holding between the descriptions and their anchors Clark 1977 .

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• Renata Vieira and Simone Teufel
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