我是ES的新手，我正在为用户创建一个可搜索的产品目录，但我无法解决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用嵌套表示的不同用户多次购买。有些产品有所有用户的条目，有些产品没有。
我需要创建搜索产品的能力，并且让特定用户购买的产品得分高于其他产品。我的问题是我不知道如何在field_value_factor函数中提取这个字段，因为它可能不适用于所有产品。
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
}
}
]
}
}
}
]
}
}
}
这里的问题是我无法将nested``path应用于field_value_factor，因此总是显示为0并且用户特定的评分提升不起作用。当nested``path围绕整个function_score应用multi_match上的第一个description查询并且name不起作用时。{/ p>
编辑1
另一种方法可能是分别计算得分，然后将它们组合起来。我可以这样做，但是should组合它们的方法会将得分归一化，这不是我想要的。所以我没有0.9 + 4和0.5 + 5而是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"}
}
}
}
}
有些文件是：
{
"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"
}
答案 0 :(得分：1)
我最后做了以下事情。我确保文档满足全文搜索，并将分数建立为全文分数和用户计数日志的增强组合。
GET /nest_index_toy/_search
{
"query": {
"bool": {
"must": {
"multi_match": {
"use_dis_max": false,
"query": "black toner super quality",
"fields": [
"name^3",
"description"
],
"tie_breaker": 0.3,
"boost": 2
}
},
"should": [
{
"multi_match": {
"use_dis_max": false,
"query": "black toner super quality",
"fields": [
"name^3",
"description"
],
"tie_breaker": 0.3,
"boost": 2
}
},
{
"nested": {
"path": "user",
"query": {
"function_score": {
"filter": {
"term": {
"user.userid": "MWUser1"
}
},
"functions": [
{
"field_value_factor": {
"field": "user.count",
"modifier": "log1p",
"missing": 0
}
}
]
}
}
}
}
]
}
}
}
答案 1 :(得分：0)
首先需要将嵌套用户的条件构建到<!doctype html>
<!--[if lt IE 7]><html class="no-js lt-ie9 lt-ie8 lt-ie7" lang="en"> <![endif]-->
<!--[if (IE 7)&!(IEMobile)]><html class="no-js lt-ie9 lt-ie8" lang="en"><![endif]-->
<!--[if (IE 8)&!(IEMobile)]><html class="no-js lt-ie9" lang="en"><![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en"><!--<![endif]-->
<head>
{% include _head.html %}
</head>
<body class="page">
{% include _browser-upgrade.html %}
{% include _navigation.html %}
{% if page.image.feature %}
<div class="image-wrap">
<img src=
{% if page.image.feature contains 'http' %}
"{{ page.image.feature }}"
{% else %}
"{{ site.url }}/images/{{ page.image.feature }}"
{% endif %}
alt="{{ page.title }} feature image">
{% if page.image.credit %}
<span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>
{% endif %}
</div><!-- /.image-wrap -->
{% endif %}
<div id="main" role="main">
<div class="article-author-side">
{% include _author-bio.html %}
</div>
<article class="page">
<h1>{{ page.title }}</h1>
<div class="article-wrap">
{{ content }}
{% if page.share != false %}
<hr />
{% include _social-share.html %}
{% endif %}
</div><!-- /.article-wrap -->
{% if site.owner.disqus-shortname and page.comments == true %}
<section id="disqus_thread"></section><!-- /#disqus_thread -->
{% endif %}
</article>
</div><!-- /#index -->
<div class="footer-wrap">
<footer>
{% include _footer.html %}
</footer>
</div><!-- /.footer-wrap -->
{% include _scripts.html %}
</body>
</html>
查询中，然后将nested查询包装起来：
function_score