Solr 多个提升查询答案

【问题标题】：Solr multiple boost queriesSolr 多个提升查询
【发布时间】：2014-04-18 21:39:42
【问题描述】：

在 Solr 3.6.2 中提升静态值的最佳方法是什么？

每个文档都有正好一个（KeywordTokenized）source 值（信息来源），我想表达一些比其他更重要。如果有帮助，则可以进行完整的内容控制。

http://localhost:8080/solr/index/select?fl=source,score
  &defType=edismax
  &qf=title^4
  &q=qux
  &bq=source:foo^10
  &bq=source:bar^14

不幸的是，添加 boost 查询 几乎没有效果。解析后的查询如下所示（qux 为 qu）

+DisjunctionMaxQuery(((title:qux qu)^4.0))) source:foo^10.0 source:bar^14.0

前两个结果的调试查询不明显尊重bq=source:foo^10

5.366351 = (MATCH) sum of: 5.366351 = (MATCH) sum of: 2.067319 = (MATCH) weight(title:qux in 4472), product of: 0.5513683 = queryWeight(title:qux), product of: 7.4988675 = idf(docFreq=35, maxDocs=23918) 0.073526874 = queryNorm 3.7494338 = (MATCH) fieldWeight(title:qux in 4472), product of: 1.0 = tf(termFreq(title:qux)=1) 7.4988675 = idf(docFreq=35, maxDocs=23918) 0.5 = fieldNorm(field=title, doc=4472) 3.299032 = (MATCH) weight(title:qu in 4472), product of: 0.69651634 = queryWeight(title:qu), product of: 9.472949 = idf(docFreq=4, maxDocs=23918) 0.073526874 = queryNorm 4.7364745 = (MATCH) fieldWeight(title:qu in 4472), product of: 1.0 = tf(termFreq(title:qu)=1) 9.472949 = idf(docFreq=4, maxDocs=23918) 0.5 = fieldNorm(field=title, doc=4472)

5.281746 = (MATCH) sum of: 4.134638 = (MATCH) sum of: 4.134638 = (MATCH) weight(title:qux in 4402), product of: 0.5513683 = queryWeight(title:qux), product of: 7.4988675 = idf(docFreq=35, maxDocs=23918) 0.073526874 = queryNorm 7.4988675 = (MATCH) fieldWeight(title:qux in 4402), product of: 1.0 = tf(termFreq(title:qux)=1) 7.4988675 = idf(docFreq=35, maxDocs=23918) 1.0 = fieldNorm(field=title, doc=4402) 1.147108 = (MATCH) weight(source:foo^10.0 in 4402), product of: 0.45919293 = queryWeight(source:foo^10.0), product of: 10.0 = boost 2.4980958 = idf(docFreq=5346, maxDocs=23918) 0.018381719 = queryNorm 2.4980958 = (MATCH) fieldWeight(source:foo in 4402), product of: 1.0 = tf(termFreq(source:foo)=1) 2.4980958 = idf(docFreq=5346, maxDocs=23918) 1.0 = fieldNorm(field=source, doc=4402)

值得注意的是，尽管source 字段中有一个值，但第一个结果没有 queryWeight for source。 fieldNorm 也因lemmatization 而有所不同

【问题讨论】：

第一个文档中source 字段的值是多少？即ID为4472的那个
@arun 值为news，即与bq不匹配的值
那么queryWeight 没有source 是有道理的，对吧？我猜你的 qn 是为什么 4472 的排名高于 4402。

标签： java apache search solr solr-boost

【解决方案1】：

这个问题很可能是由于 queryNorm。看： http://lucene.472066.n3.nabble.com/QueryNorm-and-FieldNorm-td1992964.html

只要您不根据不同查询的分数比较结果，单个搜索中的相关性排序应该没问题。

【讨论】：