tailieunhanh - Báo cáo khoa học: "A TAXONOMY FOR ENGLISH NOUNS AND VERBS"

These roles correspond loosely to a union of the various semantic types indicated in the schemas. The schemas above could all easily map i n t o : SUPPORTS(l,2, ,). It is often maintained that understanding what an utterance literally means consists in being able to recover this representation. | A TAXONOMY FOR ENGLISH NOUNS AND VERBS Robert A. Amsler Computer Sciences Department University OÍ Texas Austin. TX 78712 ABSTRACT The definition texts of a machine-readable pocket dictionary were analyzed to determine the disambiguated word sense of the kernel terms of each word sense being defined. The resultant sets of word pairs of defined and defining words vere then computationally connected into two taxonomic semilattices tangled hierarchies representing some 24 000 noun nodes and 11 000 verb nodes. The study of the nature of the topmost nodes in these hierarchies and the structure of the trees reveal information about the nature of the dictionary s organization of the language the concept of semantic primitives and other aspects of lexical semantics. The data proves that the dictionary offers a fundamentally consistent description of word meaning and may provide the basis for future research and applications in computational linguistic systems. 1. INTRODUCTION In the late 1960 s John Olney et al. at System Development Corporation produced machine-readable copies of the Merriam-Webster New Pocket Dictionary and the Merriam-Webster Seventh Collegiate Dictionary. These massive data files have been widely distributed within the computational linguistic community yet research upon the basic structure of the dictionary has been exceedingly slow and difficult due to the significant computer resources required to process tens of thousands of definitions. The dictionary is a fascinating computational resource. It contains spelling pronunciation hyphenation capitalization usage notes for semantic domains geographic regions and propriety etymological syntactic and semantic information about the most basic units of the language. Accompanying definitions are example sentences which often use words in prototypical contexts. Thus the dictionary should be able to serve as a resource for a variety of computational linguistic needs. My primary concern within the dictionary .

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