短语建议拼写错误“您是不是要”和Elasticsearch空格校正

问题描述

我使用默认的分析器“英语”来搜索文档，这非常好。 但是当搜索查询拼写错误或通过此类拼写错误的短语进行搜索时，我还需要“您是不是要”结果。

我需要什么分析器/过滤器/查询才能达到这种效果？

源文本

Elasticsearch is a distributed,open source search and analytics engine for all types of data,including textual,numerical,geospatial,structured,and unstructured. Elasticsearch is built
on Apache Lucene and was first released in 2010 by Elasticsearch N.V. (Now kNown as Elastic).
KNown for its simple REST APIs,distributed nature,speed,and scalability,Elasticsearch is
the central component of the Elastic Stack,a set of open source tools for data ingestion,enrichment,storage,analysis,and visualization. Commonly referred to as the ELK Stack 
(after Elasticsearch,Logstash,and Kibana),the Elastic Stack Now includes a rich collection
of lightweight shipping agents kNown as Beats for sending data to Elasticsearch.

搜索字词

搜索查询=>您是说XXX吗？

缺少字母或类似的符号
Elastisearch => Elasti c 搜索
distrib a ted =>分布式
Apac j e => Apache

多余的空间
弹性搜索=> Elasticsearch

没有空格
opensource =>开源

拼写错误的短语
serach engne =>搜索引擎

解决方法

您可以使用fuzzy query来获得第一个字母遗漏或其他示例，而第二个示例可以使用使用ngram或edge-ngram tokenizer的自定义分析器获取示例，请参考my blog on autocomplete。

在示例文档上添加模糊查询示例

索引映射

{
    "mappings": {
        "properties": {
            "title": {
                "type": "text"
    
            }
        }
    }
}

为示例文档建立索引并在下面的搜索查询中使用

{
    "query": {
        "fuzzy": {
            "title": {
                "value": "distributed"
            }
        }
    }
}

并搜索资源

 "hits": [
            {
                "_index": "didyou","_type": "_doc","_id": "2","_score": 0.89166296,"_source": {
                    "title": "distribated"
                }
            }
        ]

对于Elasticsearch

{
    "query": {
        "fuzzy": {
            "title": {
                "value": "Elasticsearch"
            }
        }
    }
}

并搜索结果

  "hits": [
            {
                "_index": "didyou","_id": "1","_score": 0.8173577,"_source": {
                    "title": "Elastisearch"
                }
            }
        ]