This paper presents an approach to the automatic enrichment of lexicon in a natural language understanding system to simulate man's word learning ability.
提出一种方法，用以实现自然语言理解系统的自动词汇扩展，以模拟人的词汇学习能力。
According to the characteristics of natural language understanding and expert system of network fault diagnosis, the extended production rule was presented.
根据自然语言理解和网络故障诊断专家系统的特性，提出了一种扩展产生式规则的知识表示方法。
The automatic question and answering system (QA) is a hot research field in natural language understanding, which includes many kinds of NLP technologies.
自动问答系统是自然语言理解研究领域中的热门方向，它综合运用了多种自然语言处理技术。
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