13

搜索带有空格的名称（文本），给我带来了问题，我的映射类似于

"{"user":{"properties":{"name":{"type":"string"}}}}"

理想情况下，它应该返回什么并对结果进行如下排序

1) Bring on top names that exact match the search term (highest score)
2) Names that starts with the search term (high score)
3) Names that contains the exact search term as substring (medium score)
4) Names that contains any of the search term token  (lowest score)

示例用于弹性搜索中的以下名称

Maaz Tariq
Ahmed Maaz Tariq
Maaz Sheeba
Maaz Bin Tariq
Sana Tariq
Maaz Tariq Ahmed

搜索“Maaz Tariq”，结果应按以下顺序

Maaz Tariq (highest score)
Maaz Tariq Ahmed (high score)
Ahmed Maaz Tariq (medium score)
Maaz Bin Tariq  (lowest score)
Maaz Sheeba (lowest score)
Sana Tariq (lowest score)

谁能指出我如何以及使用哪些分析仪？以及如何对名称的搜索结果进行排名？

4

3 回答 3

10

您可以使用多字段类型、布尔查询和自定义提升因子查询来解决此问题。

映射：

{
    "mappings" : {
        "user" : {        
            "properties" : {
                "name": {
                    "type": "multi_field",
                    "fields": {
                        "name": { "type" : "string", "index": "analyzed" },
                        "exact": { "type" : "string", "index": "not_analyzed" }
                    }
                }
            }
        }
    }
}

询问：

{
    "query": {
        "bool": {
            "must": [
                {
                    "match": {
                        "name": "Maaz Tariq"
                    }
                }
            ],
            "should": [
                {
                    "custom_boost_factor": {
                        "query": {
                            "term": {
                                "name.exact": "Maaz Tariq"
                            }
                        },
                        "boost_factor": 15
                    }
                },
                {
                    "custom_boost_factor": {
                        "query": {
                            "prefix": {
                                "name.exact": "Maaz Tariq"
                            }
                        },
                        "boost_factor": 10
                    }
                },
                {
                    "custom_boost_factor": {
                        "query": {
                            "match_phrase": {
                                "name": {
                                    "query": "Maaz Tariq",
                                    "slop": 0
                                }
                            }
                        },
                        "boost_factor": 5
                    }
                }
            ]
        }
    }
}

编辑：

正如 javanna 所指出的，custom_boost_factor不需要。

不带查询custom_boost_factor：

{
    "query": {
        "bool": {
            "must": [
                {
                    "match": {
                        "name": "Maaz Tariq"
                    }
                }
            ],
            "should": [
                {
                    "term": {
                        "name.exact": {
                            "value": "Maaz Tariq",
                            "boost": 15
                        }
                    }
                },
                {
                    "prefix": {
                        "name.exact": {
                            "value": "Maaz Tariq",
                            "boost": 10
                        }
                    }
                },
                {
                    "match_phrase": {
                        "name": {
                            "query": "Maaz Tariq",
                            "slop": 0,
                            "boost": 5
                        }
                    }
                }
            ]
        }
    }
}
于 2013-05-23T17:15:26.243 回答
0

在 Java Api 的情况下，使用空格查询精确字符串时；

CLIENT.prepareSearch(index)
    .setQuery(QueryBuilders.queryStringQuery(wordString)
    .field(fieldName));

在许多其他查询中，您一无所获

于 2015-07-29T17:59:54.933 回答
0

从 Elasticsearch 1.0 开始：

"title": {
    "type": "multi_field",
    "fields": {
        "title": { "type": "string" },
        "raw":   { "type": "string", "index": "not_analyzed" }
    }
}

变成：

"title": {
    "type": "string",
    "fields": {
        "raw":   { "type": "string", "index": "not_analyzed" }
    }
}

https://www.elastic.co/guide/en/elasticsearch/reference/current/multi-fields.html

于 2016-05-27T11:32:12.517 回答