1．2信息抽取系统的两大设计方法 1． 知识工程方法 知识工程方法 （ Knowledge Engineering Approach ）主要靠手工编制规则使系统能处理特定知识领域的信息抽取问题。这种方法要求编制规则的知识工程师对该知识领域有深入的了解。
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并给出装配模型的建立过程及基于工程知识的装配配合约束类型识别方法、配合特征相对自由度推理算法。
Then, the method of building the assembly model, recognizing mating constraint type based engineering knowledge, the algorithm of inferring relative freedom of mating feature are given.
利用油藏工程基本知识和基本方法，对稠油油藏水驱和蒸汽驱的两组驱油效率室内实验结果进行了分析。
This paper analyzed laboratory experiment results of oil displacement efficiencies of both water and steam drive in heavy oil reservoir by using basic knowledge and method of reservoir engineering.
依据知识工程理论，并结合冲压工艺，对连续拉深工艺传统设计方法进行了研究。
This article studies the traditional design method of progressive drawing process according to the knowledge engineering theory combined with punch process.
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