| 术语 | noise factor |
| 释义 | noise factor 噪声系数，检索指数 The ratio developed by dividing the difference between the number of documents retrieved and the number of relevant documents retrieved by the first number,i.e., a measure of the efficiency of the information retrieval system. A zero would be optimum. 量度信息检索系统效率的指数，是检得文件数与检得相关文件数之差除 以检得文件数所得之值，此指数为零时为效率最佳。 |
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