Korean has a complex inflectional system, showing agglutinative morphology and using affixation as the major mechanism for word formation. A prerequisite to the successful development of any syntactic/semantic parsers for the language thus hinges on the efficient lexicon that can syntactically expand its lexical entries and map into syntax and semantics with robust parsing performance. This paper reports the system of the Korean Resource Grammar developed as an extension of HPSG (Head-driven Phrase Structure Grammar) and the results of implementing it into the Linguistic Knowledge Building (LKB) system (cf. Copestake 2002). The paper shows that the present grammar proves to be theoretically as well as computationally efficient enough in parsing Korean sentences.
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