Implementation of Korean Syllable Structures in the Typed Feature Structure Formalism

Implementation of Korean Syllable Structures in the Typed Feature Structure Formalism Gyu-hyung Lee a, Ye-seul Park b, and Yong-hun Lee c aDepartment of English Language and Literature, Hannam University, 133 Ojeong-dong, Daedeok-gu, Daejeon 306-791, Korea gyuhyung73@naver.com bDepartment of English Language and Literature, Hannam University, 133 Ojeong-dong, Daedeok-gu, Daejeon 306-791, Korea pys218218@gmail.com cDepartment of English Language and Literature, Chungnam National University, 220 Gung-dong, Yuseng-gu, Daejeon 305-764, Korea yleeuiuc@hanmail.net Abstract. It has been known that the syllable structures in Korean are different from those in English. The goal of this paper is to provide computational implementations for Korean syllable structures in the typed feature structure formalism. The system that we adopted in this paper is the Linguistic Knowledge Building system. We first implemented the type hierarchies and AVMs for segment and suprasegment. The types consonant and vowel were included under the type segment, and the various different types were included under the type suprasegment for syllable structures. Then, we provided the rules for syllable structures. Unlike English syllabification, it has been known that onset and nucleus form a unit in Korean, which is called core. Accordingly, we provided the rules for onset, nucleus, and coda; then, the rules for core and syllable to combine segments into syllable structures. This paper also employed the type nf to solve the ambiguity problems. Keywords: syllable structure, Korean, typed feature formalism, LKB, implementation 1 Introduction Since Bird & Klein (1994), there have been many trials to implement phonological processes within the typed feature structure formalism. Most of them have been conducted within Head- driven Phrase Structure Grammar (HPSG; Pollard & Sag, 1994; Sag & Wasow, 1999; Sag et al. 2003). The goal of this paper is to provide computational implementations for Korean syllable structures within the typed feature structure formalism. The implementational system that we adopted in this paper is the Linguistic Knowledge Building (LKB) system (Copestake, 2002). In this system, we first implemented the type hierarchies for the two types segment and suprasegment. The types consonant and vowel were included under the type segment. Various different types were included under the type suprasegment for syllable structures. Then, we provided rules for syllable structures. It has been known that the syllable structures in Korean are different from those in English. Unlike English syllable structures, it has been known that onset and nucleus form a core, and core and coda form a syllable in Korean. We first provided the implementational rules for onset, nucleus, and coda first; and then we provided rules for core and syllable. Finally, we used the type phon-word in which all the syllables were combined within a phonological word. We also employed the type nf in order to solve the ambiguity problems during the parsing processes. PACLIC 24 Proceedings 203 2 Previous Studies Previous studies related to this paper can be divided into two types. The first group is related to syllable structures, and the other group is on computational phonology in the typed feature structure formalism. According to Fromkin et al. (2010) …

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