| 查全率-查准率间存在顺变关系的数学证明 |
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| 引用本文： | 马景娣.查全率-查准率间存在顺变关系的数学证明[J].情报科学,2003,21(1):27-29. |
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| 作者姓名： | 马景娣 |
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| 作者单位： | 浙江大学图书馆,杭州,310027 |
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| 摘 要： | 本文从理论上利用数学推导方法对查全率与查准率之间的关系进行了推导、论证，得出：不同的检索条件下，查全率与查准率之间可以呈现出逆变、顺变或不变的关系；并给出呈现不同关系时的条件关系式。文中同时对现有方面中仅得出“查全率－查准率互逆相关”结论的原因进行了剖析。
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| 关 键 词： | 顺变关系 查全率 查准率 信息检索 关系 |
| 文章编号： | 1007-7634(2003)01-0027-03 |
| 修稿时间： | 2002年4月28日 |
The Relationship between Recall and Precision: A Mathematic Derivation |
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| Ma Jingdi.The Relationship between Recall and Precision: A Mathematic Derivation[J].Information Science,2003,21(1):27-29. |
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| Authors: | Ma Jingdi |
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| Abstract: | The relationship between recall and precision is derived and proved using the mathematic method It is proved that,at different search conditions,there exist inverse,direct and other relationships between recall and precision In addition,the reason why the inverse relationship between recall and precision was taken for granted is analyzed |
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| Keywords: | Recall Precision Information retrieval Evaluation Relationship |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
