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【答案】应助回帖
unitjava(金币+8, 翻译EPI+1): 谢谢，另"默认设为0.5"一般怎么译？ 2011-11-27 14:39:48
Considering the influences of the whole sorting factors, the evaluation function is shown as equation 2, where: length denotes the length of the results list, n denotes the kind of the contextual factor concerned by the user, wc denotes the concern weight value of the contextual factor.
Comprehensively considering the influences of the key words retrieval and the contextual factors, the overall evaluation function is shown as equation 4(也可以写成Equ.4).
The computing method of vi is defined in equation 1, the recall ratio and the precision ratio are computed respectively by using r and p, where: s is the number of relevant records which are retrieved, D is the total number of the records which are actually relevant to the searching, I is the number of the documents which are retrieved. |
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