Abstract
We discuss and propose a paraphrasing method of Japanese verbal noun phrases into corresponding Japanese compound nouns.This work is done as a basic research of understanding mechanism of Japanese paraphrasing phenomena, as well as contributing processes of summarization for mobile devices, proofreading of official documents, and approximate string matching in information retrieval.The paraphrasing process involves a judgment of compound noun that is created as a candidate of paraphrasing, in terms of their naturalness.We first discuss this issue and describe a criterion to determine if it is a proper output.We then need to transform a case element of a verb into a modifier of noun, since verbness of the verbal noun is reduced by paraphrasing. We illustrate the process of this transformation in the paper, and evaluate the correctness of this process with the results of our experiments.We finally discuss two roles of verbal noun, i.e.verb and noun, and change of verbness in context.
