Extraction method of non-restrictive modification in Japanese as a marked factor of prosody

This paper shows by a quantitative evaluation that nonrestrictive modification in Japanese is a marked factor of prosody, and describes how to extract non-restrictive modification. In Japanese, restrictive and non-restrictive modification have the same syntactic structure, so it is difficult to distinguish them. We propose rules to extract non-restrictive modification in news-text based on the classification of non-restrictive modification and the combination patterns of the head noun and the modifier.