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Anaphoricity Determination of Zero Pronouns for Intra-sentential Zero Anaphora Resolution  

Kim, Kye-Sung (경북대학교 컴퓨터공학과)
Park, Seong-Bae (경북대학교 IT대학 컴퓨터학부)
Park, Se-Young (경북대학교 IT대학 컴퓨터학부)
Lee, Sang-Jo (경북대학교 IT대학 컴퓨터학부)
Publication Information
Journal of KIISE:Software and Applications / v.37, no.12, 2010 , pp. 928-935 More about this Journal
Abstract
Identifying the referents of omitted elements in a text is an important task to many natural language processing applications such as machine translation, information extraction and so on. These omitted elements are often called zero anaphors or zero pronouns, and are regarded as one of the most common forms of reference. However, since all zero elements do not refer to explicit objects which occur in the same text, recent work on zero anaphora resolution have attempted to identify the anaphoricity of zero pronouns. This paper focuses on intra-sentential anaphoricity determination of subject zero pronouns that frequently occur in Korean. Unlike previous studies on pair-wise comparisons, this study attempts to determine the intra-sentential anaphoricity of zero pronouns by learning directly the structure of clauses in which either non-anaphoric or inter-sentential subject zero pronouns occur. The proposed method outperforms baseline methods, and anaphoricity determination of zero pronouns will play an important role in resolving zero anaphora.
Keywords
zero pronoun; intra-sentential anaphoricity determination; intra-sentential zero anaphora resolution;
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Times Cited By KSCI : 1  (Citation Analysis)
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