The research improves the objectivity and accuracy of the classification and decision-making of mechanical products system; it also enhances the automatization level of classification.

本课题的研究有利于提高机械产品系统分类与决策的客观性与准确性，提高分类的自动化水平。

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To avoid the similarity definition of images, classification and searching problems of images are solved through decision-making table theory.

避开图像相似度大小的定义，通过决策表理论解决图像的分类与检索问题。

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But it needs prior knowledge of speech signal and its classification and decision making capability is weak.

但它存在需要语音信号的先验知识，分类决策能力弱等缺点。

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