The treatment of phrasal verbs in a natural language processing system.
Item
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Title
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The treatment of phrasal verbs in a natural language processing system.
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Identifier
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AAI9510717
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identifier
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9510717
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Creator
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Shaked, Nava Ayala.
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Contributor
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Adviser: Virginia Teller
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Date
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1994
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Language
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English
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Publisher
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City University of New York.
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Subject
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Language, Linguistics | Computer Science
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Abstract
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The phrasal verbs construction is problematic both theoretical and computational linguistics. The problems involve all areas from representation to processing. This work addresses the treatment of phrasal verbs in a computational lexicon. The purpose is to arrive at an adequate classification of the construction that will minimize its ambiguity and conform to the needs of both theoretical and computational linguistics.;While in theoretical linguistics there is extensive literature on the issue, there are few attempts to deal with the construction in the area of computational linguistics. Current treatments of phrasal verbs suggested by NLP systems tend to be ad hoc and lack both systematic classification and theoretical support. This research offers a detailed look at this ambiguous construction, highlights some of the problems and offers solutions. We claim that the key to successful processing lies in the correct representation of phrasal verbs which require different internal classification. This can be done based on the syntactic and semantic attributes of the construction coupled with some non-linguistic information such as statistical information.;The model presented in this work accounts for the lexical, structural, and semantic representation of the three types of phrasal verbs: literal, systematic, and figurative. The model assumes a dependency between the verb and the particle, and uses semantic features in order to capture the different possible senses a phrasal verb can have. We also present some initial implementation and testing of the model for the task of assigning lexical ambiguity tags.;The treatment of phrasal verb is relevant to the treatment of other constructions which pose a problem for both linguistic theory and computational systems. These include compounds, idioms in general, and long distance relationships similar to those exhibited by verbs and particles. The three-level model sheds light on possible treatments in these problematic areas as well.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
