【发布时间】：2017-02-08 00:09:23
【问题描述】：
我是 ES 新手，希望为用户创建可搜索的产品目录，但我无法找到对购买相同产品的不同用户进行编码的方法。
我有一个完整的产品索引，这些产品可能已被我使用嵌套表示的不同用户多次购买。有些产品为所有用户提供条目，有些则没有。
我需要创建搜索产品的能力，并让特定用户购买的产品获得比其他产品更高的分数。我的问题是我不知道如何在 field_value_factor 函数中提取此字段，因为它可能并不适用于所有产品。
到目前为止，我最接近的尝试（感谢 Val）是：
{
"query": {
"bool": {
"should": [
{
"multi_match": {
"query": "black toner",
"fields": [
"name",
"description"
],
"tie_breaker": 0.3
}
},
{
"query": {
"function_score": {
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "black toner",
"fields": [
"name",
"description"
],
"tie_breaker": 0.3
}
},
{
"nested": {
"path": "user",
"query": {
"term": {
"user.userid": "MWUser2"
}
}
}
}
]
}
},
"functions": [
{
"field_value_factor": {
"field": "user.count",
"modifier": "log1p",
"missing": 0
}
}
]
}
}
}
]
}
}
}
这里的问题是我不能将nested``path 应用到field_value_factor，所以它总是显示为0，并且用户特定的得分提升不起作用。当nested``path 应用于整个function_score 时，description 和name 上的第一个multi_match 查询不起作用。
编辑 1
另一种方法是分别计算分数，然后将它们组合起来。我可以做到这一点，但 should 组合它们的方法会使分数正常化，这不是我想要的。因此，我没有做0.9 + 4 和0.5 + 5，而是两者都得到0.7+0.7。有没有办法解决这个问题？
{
"query": {
"bool": {
"should": [
{
"query": {
"multi_match": {
"use_dis_max": false,
"query": "black super quality toner",
"fields": [
"name^3",
"description"
],
"tie_breaker": 0.3
}
}
},
{
"query": {
"nested": {
"path": "user",
"query": {
"function_score": {
"filter": {
"term": {
"user.userid": "MWUser1"
}
},
"functions": [
{
"field_value_factor": {
"field": "user.count",
"modifier": "log1p",
"missing": 0
}
}
]
}
}
}
}
}
]
}
}
}
我的映射是：
{
"mappings": {
"nest_type": {
"properties": {
"id" : {"type":"string"},
"company_code" : {"type":"string"},
"name" : {"type":"string"},
"description" : {"type":"string"},
"virtual_entity" : {"type":"boolean"},
"created_at" : {"type":"date"},
"updated_at" : {"type":"date"},
"user": {
"type": "nested",
"properties": {
"userid": {"type":"string"},
"count": {"type":"short"},
"last_bought": {"type":"date"}
}
},
"@timestamp" : {"type":"date"}
}
}
}
}
一些文件是：
{
"id": "C8061X",
"company_code": "MWCOMPCODE",
"name": "Black LaserJet Toner Cartridge",
"description": "- HP LaserJet C8061 Family Print Cartridges deliver extra sharp black text, smooth greyscales and fine detail in graphics.\n- HP LaserJet C8061 Family Print Cartridges with Smart Printing Technology with in-built reliability and rigorous quality testing ensure maximum printer uptime with minimum user intervention.\n- HP LaserJet C8061 Family Print Cartridges all-in-one design allow effortless installation and maintenance. Smart Printing Technology features monitoring of supplies status and usage information via the printers control panel or web browser.\n",
"virtual_entity": false,
"created_at": "2016-09-21T12:23:53.000Z",
"updated_at": "2016-09-21T12:23:53.000Z",
"user": [
{
"userid": "MWUser1",
"count": 4,
"last_bought": "2016-09-14T12:43:30.000Z"
},
{
"userid": "MWUser2",
"count": 2,
"last_bought": "2016-09-14T10:00:00.000Z"
}
],
"@timestamp": "2016-09-21T13:38:30.077Z"
}
{
"id": "C8061Y",
"company_code": "MWCOMPCODE",
"name": "Black LaserJet Toner Cartridge Super Quality",
"description": "- HP LaserJet C8061 Family Print Cartridges deliver extra quality sharp black text, smooth greyscales and fine detail in graphics.\n- HP LaserJet C8061 Family Print Cartridges with Smart Printing Technology with in-built reliability and rigorous quality testing ensure maximum printer uptime with minimum user intervention.\n- HP LaserJet C8061 Family Print Cartridges all-in-one design allow effortless installation and maintenance. Smart Printing Technology features monitoring of supplies status and usage information via the printers control panel or web browser.\n",
"virtual_entity": false,
"created_at": "2016-09-21T12:23:53.000Z",
"updated_at": "2016-09-21T12:23:53.000Z",
"@timestamp": "2016-09-21T13:38:30.077Z"
}
【问题讨论】：
标签： elasticsearch nested