A large-scale Japanese CFG derived from a syntactically annotated corpus and its evaluation
Tomoya Noro, Takenobu Tokunaga, Taiichi Hashimoto, Hozumi Tanaka · 2004
Although large-scale grammars are prerequisite for parsing a great variety of sentences, it is difficult to build such grammars by hand. Yet, it is possible to build a context-free grammar (CFG) by deriving it from a syntactically annotated corpus. Many such corpora have been built recently to obtain statistical information concerning