Question

我在Solr 6中计算fieldLength值时遇到了一个问题。我使用BM25作为相似性度量。当我索引一组文档时，这些文档的fieldLength值非常错误。对于仅包含9个单词的标题字段，fieldLength字段存储值＆＃34; 5.6493154E19＆＃34;这是完全错误的。当我重新索引单个文档时，分数得到纠正，并显示fieldLength值为＆＃34; 10.24＆＃34;。现在，当我重新索引整个语料库时，这些值再次被破坏，而且fieldLength值又是＆＃34; 5.6493154E19＆＃34;

存储原始字段长度值：

     4.641637E-19 = tfNorm, computed as (freq * (k1 + 1)) / (freq + k1 * (1 - b + b * fieldLength / avgFieldLength)) from:
    1.0 = termFreq=1.0
    1.2 = parameter k1
    0.75 = parameter b
    10.727212 = avgFieldLength
    5.6493154E19 = fieldLength

重新索引单个文档后：

     1.0189644 = tfNorm, computed as (freq * (k1 + 1)) / (freq + k1 * (1 - b + b * fieldLength / avgFieldLength)) from:
    1.0 = termFreq=1.0
    1.2 = parameter k1
    0.75 = parameter b
    10.72807 = avgFieldLength
    10.24 = fieldLength

重新索引整个语料库后：

      4.641637E-19 = tfNorm, computed as (freq * (k1 + 1)) / (freq + k1 * (1 - b + b * fieldLength / avgFieldLength)) from:
    1.0 = termFreq=1.0
    1.2 = parameter k1
    0.75 = parameter b
    10.727212 = avgFieldLength
    5.6493154E19 = fieldLength

关于问题所在的任何想法？

字段长度值中的值非常大＆＃34; fieldLength＆＃34; Solr BM25

0 个答案: