| 对两种估计单属性关系大小方法的可信度讨论 |
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| 引用本文： | 黄平,须德,张全寿. 对两种估计单属性关系大小方法的可信度讨论[J]. 北京交通大学学报(自然科学版), 1993, 0(4) |
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| 作者姓名： | 黄平 须德 张全寿 |
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| 作者单位： | 北方交通大学计算机科学技术系，北方交通大学计算机科学技术系，北方交通大学计算机科学技术系 |
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| 摘 要： | 估计两个单属性关系在连接属性上取相同值的个数的方法有两种:静态估计法和动态估计法.本文利用不精确性推理模型对这两种方法的可信度定量地进行讨论,并用具体例子进行说明.
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| 关 键 词： | 数据库 算法 统计 |
Discussion on the Certainty of two Methods Estimating a Single-Attribute Relation''''s Size |
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| Huang Ping,Xu De,Zhang Quanshou. Discussion on the Certainty of two Methods Estimating a Single-Attribute Relation''''s Size[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 1993, 0(4) |
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| Authors: | Huang Ping Xu De Zhang Quanshou |
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| Affiliation: | Huang Ping;Xu De;Zhang Quanshou Department of Computer Science and Technology |
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| Abstract: | There are two methods to estimate the number of the same values of two single-attribute relations in join's attribute:static estimation and dynamic estimation.This paper makes use of inaccuracy reasoning model to discus the certainty of the two methods in detail,concrete examples are provided for illus- tration. |
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| Keywords: | data base algorithm statistics |
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