| 基于信息论的零件编码定量评估 |
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| 引用本文： | 李凌丰,谭建荣,刘波.基于信息论的零件编码定量评估[J].中国机械工程,2004,15(17):1533-1536. |
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| 作者姓名： | 李凌丰 谭建荣 刘波 |
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| 作者单位： | 浙江大学CAD&CG国家重点实验室,杭州,310027 |
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| 基金项目： | 国家 8 63高技术研究发展计划资助项目 ( 863 -5 11-941-0 10，863 -5 11-0 90 -0 12 )，浙江省科学技术厅资助项目( 2 0 0 4C3 10 18) |
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| 摘 要： | 零件分类编码中，码位取值符号所反映的信息量与该符号出现的概率分布有内在联系。以Shannon信息论为基础，建立了将编码作为信源的模型。该模型保留了能用数学描述的形式因素，使用信息熵定量地度量编码符号和码位的信息量。求解出了符号种数固定时的信息量最大值及其编码方案，并举例说明了该方法在注塑机零件分类编码系统中的应用。
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| 关 键 词： | 零件分类编码 信源 信息量 码位的信息熵 |
| 文章编号： | 1004-132X(2004)17-1533-04 |
Quantitative Evaluation of Part Classification Codes Based on Information Theory |
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| Li Lingfeng Tan Jianrong Liu Bo Zhejiang University,Hangzhou.Quantitative Evaluation of Part Classification Codes Based on Information Theory[J].China Mechanical Engineering,2004,15(17):1533-1536. |
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| Authors: | Li Lingfeng Tan Jianrong Liu Bo Zhejiang University Hangzhou |
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| Affiliation: | Li Lingfeng Tan Jianrong Liu Bo Zhejiang University,Hangzhou,310027 |
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| Abstract: | In part classification codes, information that embodied in code value has internal relation with the probability distribution of codes. This paper was to establish a model regarding codes as information source based on C. E. Shannon's information theory. It preserved the mathematical form and quantitatively measured the information amount of code character and bit using information entropy. It also gets the maximum value of information amount and the corresponding coding scheme when the category of characters is fixed.Taking injection molding machine as an example,the application of the system is illustrated. |
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| Keywords: | part classification code information source information amount information entropy of code bit |
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