PROBABILITY RANKING PRINCIPLE IN IR
PROBABILITY RANKING PRINCIPLE IN IR
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DOI：
10.1108/eb026647
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发表时间：
1977-01-01
影响因子：
2.1
通讯作者：
ROBERTSON, SE
中科院分区：
文献类型：
--
作者：
ROBERTSON, SE
库珀对以下原则提出了质疑：为了实现最佳检索，文档应按照相关性或有用性的概率进行排序。结果表明，该原理在某些假设下是合理的，但在这些假设不成立的情况下，该原理无效。主要问题似乎在于该原则独立于其他文件考虑每个文件的方式。系统决定是否检索文档所依据的信息的性质决定了逐文档方法是否有效。
The principle that, for optimal retrieval, documents should be ranked in order of the probability of relevance or usefulness has been brought into question by Cooper. It is shown that the principle can be justified under certain assumptions, but that in cases where these assumptions do not hold, the principle is not valid. The major problem appears to lie in the way the principle considers each document independently of the rest. The nature of the information on the basis of which the system decides whether or not to retrieve the documents determines whether the document‐by‐document approach is valid.