Metacognition impenetrate in the whole process of interactive discourse is the evidence for its existence.

Design and realization of intelligent question-answering system supporting natural language;

The natural language communication function in a multi-agent parallel design environment;

Processing methods of natural language in the mechine translation;

Research on tone recognition in Chinese spontaneous speech;

From the development of language,spontaneous speech is an archaic,common used and typical form of the language.

The author has,making use of text dialect investigation method and taking Zhuxi County and Yunxi County spontaneous speech as the material,described all the functions of Jiushi,especially discourse markers function and made an analysis on its grammticalization ways and motives on the base of relevant research of typology and text grammar.

On the Advantages of Nature Language and the Fading Away of the Artificial Language;

Based on the theory of fuzzy logic,fuzzy concept in nature language is presented with fuzzy membership functions.

Using the present advanced technologies such as nature language,full-text searching and data mining,this paper designed a full-round intelligent question-answer system of network course.

To determine the transition relation in the model,both natural semantics and structural operational semantics for PKAT were put forward.

Based on the analysis of the existed problems of traditional vocal tract modeling and glottal measurement extraction methods, an improved glottal source analyzing method is presented and an algorithm based on the method is used to analyze continuous natural utterance automatically.