Building a Japanese parsed corpus while improving the parsing system

In January 1996, we started a project to construct a Japanese parsed corpus and to simultaneously improve a morphological analyzer and a parser. In this project, human annotators are not only correcting the erroneous analyses produced by the parsing system, but also improving the parsing system/grammar: nding problematic xed expressions, picking up phrases which have exceptional functions, and classifying unseen types of clauses, and so on.