Semantic-level Transfer in Japanese-German Speech Translation : Some Experiences

概要

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The Japanese-German transfer component of the ASURA speech-to-speech translation system transforms feature structures produced by Japanese analysis into modified feature structures suitable for input to German generation. The production-style rules which compose the J-G component are applied by the Feature Structure Rewriting System (RWS). This paper discusses several issues which arose during rule development and their implications for future work. First, we examine the level at which transfer operates: How should the symbols in transferred feature structures be interpreted? How should one define the boundary between transfer and generation? Second, we consider the possible use of language-neutral symbols in transfer. Third, we consider several issues of semantic representation. Sometimes problems arose because information was missing in the analysis output. In other cases, the proper semantic format was uncertain. Finally, we examine various ad hoc aspects of the current system. In many cases, greater generality can be achieved by taking full advantage of the RWS' typing system for feature structures. Other problems, however, may require extensive knowledge processing.
一般社団法人情報処理学会の論文
1993-05-20