Remarks on CT and COT for Discourse Anaphora Resolution
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Most studies on anaphora resolution have been done not in the discourse but in the sentence, in the generative grammar or formal linguistics. In the computational linguistics, however, many studies on it have been presented in the discourse level. The Centering Theory could be more representative than others. Beaver (2004) have presented a new theory in the perspective of linguistics, called the Centering in Optimality Theory, combining Centering Theory in computational linguistics with Optimality Theory in phonology originally. In this respect, this paper aims to overview, compare, and evaluate two theories, CT and COT. In this paper, we show that the constraints in COT are recognizable from rules and algorithms in CT, and the ordering of constraints in COT is also related to the one of rules in CT. we point out the common and different points between COT and CT. In addition, we discuss some merits and drawbacks of COT, in terms of defeasibility of constraints and processing cost. Finally, we want to say that COT is an anticipated model for discourse anaphora resolution.
Abstract
Most studies on anaphora resolution have been done not in the discourse but in the sentence, in the generative grammar or formal linguistics. In the computational linguistics, however, many studies on it have been presented in the discourse level. The Centering Theory could be more representative than others. Beaver (2004) have presented a new theory in the perspective of linguistics, called the Centering in Optimality Theory, combining Centering Theory in computational linguistics with Optimality Theory in phonology originally. In this respect, this paper aims to overview, compare, and evaluate two theories, CT and COT. In this paper, we show that the constraints in COT are recognizable from rules and algorithms in CT, and the ordering of constraints in COT is also related to the one of rules in CT. we point out the common and different points between COT and CT. In addition, we discuss some merits and drawbacks of COT, in terms of defeasibility of constraints and processing cost. Finally, we want to say that COT is an anticipated model for discourse anaphora resolution.
참고문헌 (13)
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