如何解决如何在 Elasticsearch 查询中优先处理文档
我的索引中有产品。文档的基本结构如下：
{
"_id": "product","_source": {
...
"type": "product","id": 1,"mainTaxon": {
"name": "T-SHIRT",},"attributes": [
{
"code": "name","name": "Name","value": [
"BANANA T-SHIRT"
],"score": 50
},]
}
},{
"_id": "product","id": 2,"mainTaxon": {
"name": "JEANS","value": [
"BANANA JEANS"
],]
}
}
}
当我搜索“BANANA”时，我会优先考虑mainTaxon 与JEANS 不同的产品。因此，具有 mainTaxon 名称 T_SHIRT 或其他名称的每个产品都将列在具有 mainTaxon JEANS 的产品之前。
解决方法
您可以使用 boosting query 对文档进行优先排序
{
"query": {
"boosting": {
"positive": {
"match": {
"attributes.value": "banana"
}
},"negative": {
"match": {
"mainTaxon.name": "JEANS"
}
},"negative_boost": 0.5
}
}
}
搜索结果将是
"hits": [
{
"_index": "67164768","_type": "_doc","_id": "1","_score": 0.5364054,"_source": {
"type": "product","id": 1,"mainTaxon": {
"name": "T-SHIRT"
},"attributes": [
{
"code": "name","name": "Name","value": [
"BANANA T-SHIRT"
],"score": 50
}
]
}
},{
"_index": "67164768","_id": "2","_score": 0.32743764,"id": 2,"mainTaxon": {
"name": "JEANS"
},"value": [
"BANANA JEANS"
],"score": 50
}
]
}
}
]
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