短语搜索使用弹性搜索显示不相关的结果 [英] Phrase Search using Elasticsearch Showing Unrelated Results

问题描述

我在Ubuntu Linux机器上使用Elasticsearch 1.4.1，使用Haystack 2.3.1来搜索Django 1.5站点。我使用EdgeNGram字段为文档文本设置了我的搜索索引，除了在SearchView中搜索searchqueryset的一些过滤之外，我有一个漂亮的标准设置（我想:)）。

我有一个问题是短语搜索（引用的搜索）正常工作，除了某些特定情况，例如：1G鸡（刚刚组成，但是例证了这个问题） - 什么它似乎是忽略1G，只是把它变成一个搜索鸡。这是预期的吗有没有办法强制弹性搜索来表达这个短语？

这是从慢日志中查询本身：

  [2014-12-09 17：09：19,373] [WARN] [index.search.slowlog.fetch] [Advisor] [haystack] [4]采取了[3.3ms] ，took_millis [3]，types [modelresult]，stats []，search_type [QUERY_THEN_FETCH]，total_shards [5]，source [{query：{filtered：{filter：{terms：{django_ct ：[ objectives.objective， actions.action， attachments.file， projects.project， toolkits.toolkit]}}， 查询：{ QUERY_STRING：{ auto_generate_phrase_queries： true，default_operator：AND，analyze_wildcard：true，query：（organization_id：（\2\OR \3\OR \6\OR \\ \\40 \OR \170 \OR \171 \OR \172 \OR \173 \OR \174 \）AND（\\ 1G Chicken\）），default_field：text}}}}，from：0，size：15}]，extra_source []，
  

organization_id与SQS过滤器相关在我最初提到的SearchView中。

另请注意我已经尝试过将手动设置为0的模糊，但这似乎没有帮助。 p>

任何想法？

解决方案

三分之一的min_gram只会存储令牌三个字符或更多 - 1G将被忽略。

您可以将min_gram减小到较小的长度或切换到另一个分析仪。

I'm using Elasticsearch 1.4.1 on an Ubuntu Linux machine to provide search for a Django 1.5 site, using Haystack 2.3.1. I have my search indexes set up using EdgeNGram fields for the document text, and other than some filtering of the searchqueryset in the SearchView, I have a pretty standard setup (I think :) ).

What I'm having an issue with is that phrase searches (quoted searches) are working fine, except for some certain cases, for example: "1G chicken" (just made up, but exemplifies the issue) - what it seems to do is ignore the 1G and simply turn it into a search for "chicken". Is this expected? Is there a way to force elastic search to honor the phrase?

Here is the query itself from the slow log:

[2014-12-09 17:09:19,373][WARN ][index.search.slowlog.fetch] [Advisor] [haystack][4] took[3.3ms], took_millis[3], types[modelresult], stats[], search_type[QUERY_THEN_FETCH], total_shards[5], source[{"query":{"filtered":{"filter":{"terms":{"django_ct":["objectives.objective","actions.action","attachments.file","projects.project","toolkits.toolkit"]}},"query":{"query_string":{"auto_generate_phrase_queries":true,"default_operator":"AND","analyze_wildcard":true,"query":"(organization_id:(\"2\" OR \"3\" OR \"6\" OR \"40\" OR \"170\" OR \"171\" OR \"172\" OR \"173\" OR \"174\") AND (\"1G Chicken\"))","default_field":"text"}}}},"from":0,"size":15}], extra_source[],

The "organization_id" is related to the SQS filtering in the SearchView that I mentioned originally.

Also note I've tried things like manually setting the fuzziness to 0, but that doesn't seem to help.

Any ideas?

解决方案

A min_gram of three will only store tokens with three characters or more - "1G" will be ignored.

You can either decrease the min_gram to smaller length or switch to another analyser.

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