The NLP-Oriented Empty Categories
Aiping Tu · 2012
Empty Categories are expressions which are base-generated in the deep structure and have no overt phonetic form in the surface structure.As for computers, it is difficult to make clear where and what the empty categories are.Therefore, revealing the empty categories is essential to the nature language processing (NLP).Chinese does not only have nominal empty categories, but also verbal and prepositional empty categories.This article proves the existence of these two non-nominal empty categories in Chinese, and further points out where and what the empty categories are.