php网站开发过程考试,电子商务网站功能介绍,腾讯体育,黄岩区建设局网站script_score介绍
在Elasticsearch中#xff0c;script_score是在function_score查询中的一种功能强大的方式#xff0c;允许用户使用内置Painless脚本语言或者其他支持的语言来动态计算每个文档的评分
script_score语法
GET /索引名/_search
{query:…script_score介绍
在Elasticsearch中script_score是在function_score查询中的一种功能强大的方式允许用户使用内置Painless脚本语言或者其他支持的语言来动态计算每个文档的评分
script_score语法
GET /索引名/_search
{query: {function_score: {query: { match_all: {} }, // 或者其它查询条件functions: [{script_score: {script: {source: double customScore 0;if (doc[field1].value params.threshold1) {customScore doc[field1].value * params.multiplier1;}customScore doc[field2].value;return customScore;,params: {threshold1: 50,multiplier1: 0.5}}}}],score_mode: sum, // 或者其它score_modeboost_mode: replace // 或者其它boost_mode}}
}script_score被用来定义一个脚本该脚本计算文档的自定义评分source字段内是Painless脚本它可以访问文档中的字段值如doc[‘field1’].value和doc[‘field2’].value并对它们进行计算params是一个键值对对象用于传递给脚本的参数此处定义了两个参数threshold1和multiplier1
script_score 案例
场景
假设我们有一个问答论坛索引需要基于回答数量和点赞数查找高质量
索引创建
PUT /forum_questions
{mappings: {properties: {question: {type: text},answer_count: {type: long},upvotes: {type: long}}}
}文档插入
POST /forum_questions/_doc/
{question: What is Elasticsearch?,answer_count: 5,upvotes: 20
}POST /forum_questions/_doc/
{question: How to configure Elasticsearch for production?,answer_count: 3,upvotes: 15
}POST /forum_questions/_doc/
{question: Best practices for indexing data in Elasticsearch?,answer_count: 10,upvotes: 30
}POST /forum_questions/_doc/
{question: How to optimize Elasticsearch performance?,answer_count: 8,upvotes: 18
}POST /forum_questions/_doc/
{question: What are shards and replicas in Elasticsearch?,answer_count: 6,upvotes: 25
}POST /forum_questions/_doc/
{question: How to handle time-based data in Elasticsearch?,answer_count: 4,upvotes: 12
}POST /forum_questions/_doc/
{question: What is the difference between match and term queries?,answer_count: 7,upvotes: 23
}POST /forum_questions/_doc/
{question: How to set up Elasticsearch clusters?,answer_count: 9,upvotes: 16
}查询
GET /forum_questions/_search
{query: {function_score: {query: { match_all: {} }, // 或者使用具体查询条件functions: [{script_score: {script: {source: double score 0;score doc[answer_count].value * params.answer_weight;score doc[upvotes].value * params.upvote_weight;return score;,params: {answer_weight: 0.7,upvote_weight: 0.3}}}}],score_mode: sum}}
}
