TAILIEUCHUNG - Báo cáo khoa học: "acquiring and structuring semantic information from text"

As a lexical knowledge base constructed automatically from the definitions and example sentences in two machine-readable dictionaries (MRDs), MindNet embodies several features that distinguish it from prior work with MRDs. It is, however, more than this static resource alone. MindNet represents a general methodology for acquiring, structuring, accessing, and exploiting semantic information from natural language text. | MindNet acquiring and structuring semantic information from text Stephen D. Richardson William B. Dolan Lucy Vanderwende Microsoft Research One Microsoft Way Redmond WA 98052 . Abstract As a lexical knowledge base constructed automatically from the definitions and example sentences in two machine-readable dictionaries MRDs MindNet embodies several features that distinguish it from prior work with MRDs. It is however more than this static resource alone. MindNet represents a general methodology for acquiring structuring accessing and exploiting semantic information from natural language text. This paper provides an overview of the distinguishing characteristics of MindNet the steps involved in its creation and its extension beyond dictionary text. 1 Introduction In this paper we provide a description of the salient characteristics and functionality of MindNet as it exists today together with comparisons to related work. We conclude with a discussion on extending the MindNet methodology to the processing of other corpora specifically to the text of the Microsoft Encarta 98 Encyclopedia and on future plans for MindNet. For additional details and background on the creation and use of MindNet readers are referred to Richardson 1997 Vanderwende 1996 and Dolan et al. 1993 . 2 Full automation MindNet is produced by a fully automatic process based on the use of a broad-coverage NL parser. A fresh version of MindNet is built regularly as part of a normal regression process. Problems introduced by daily changes to the underlying system or parsing grammar are quickly identified and fixed. Although there has been much research on the use of automatic methods for extracting information from dictionary definitions . Vossen 1995 Wilks et al. 1996 hand-coded knowledge bases . WordNet Miller et al. 1990 continue to be the focus of ongoing research. The Euro WordNet project Vossen 1996 although continuing in the WordNet tradition includes a focus on semi-automated .

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