适用于
等文件{
"_id" : "abc123",
"_score" : 3.7613528,
"_source" : {
"id" : "abc123",
"pricePeriods" : [{
"periodTo" : "2016-01-02",
"eur" : 1036,
"gbp" : 782,
"dkk" : 6880,
"sek" : 9025,
"periodFrom" : "2015-12-26",
"nok" : 8065
}, {
"periodTo" : "2016-06-18",
"eur" : 671,
"gbp" : 457,
"dkk" : 4625,
"sek" : 5725,
"periodFrom" : "2016-01-02",
"nok" : 5430
} ]
}
}
我想在价格上有一个高斯衰减函数得分。
我试过这样的
"query" : {
"function_score" : {
"functions" : [{
"gauss" : {
"pricePeriods.dkk" : {
"origin" : "2500",
"scale" : "2500",
"decay" : 0.8
}
},
"filter" : {
"nested" : {
"filter" : {
"range" : {
"pricePeriods.periodTo" : {
"gte" : "2016-03-17T00:00:00.000"
}
}
},
"path" : "pricePeriods"
}
}
}
]
似乎过滤器找到了我想要高估的价格,但结果得分始终为1.
解释说
{ "value": 1,
"description": "min of:",
"details": [
{
"value": 1,
"description": "function score, score mode [multiply]",
"details": [
{
"value": 1,
"description": "function score, product of:",
"details": [
{
"value": 1,
"description": "match filter: ToParentBlockJoinQuery (+ConstantScore(pricePeriods.periodTo:[[32 30 31 36 2d 30 33 2d 31 37 54 30 30 3a 30 30 3a 30 30 2e 30 30 30] TO *]) #QueryWrapperFilter(_type:__pricePeriods))",
"details": []
},
{
"value": 1,
"description": "Function for field pricePeriods.dkk:",
"details": [
{
"value": 1,
"description": "exp(-0.5*pow(MIN[0.0],2.0)/1.4004437867889222E7)",
"details": []
}
]
}
]
}
]
}
我可以看到here高斯显然在找不到场时返回1。 但问题是为什么它无法在嵌套文档中找到该字段以及如何找到它。
答案 0 :(得分:0)
gauss function
返回1的原因是因为正如您所说,它无法找到nested
字段,您基本上需要将整个function_score
查询包装成nested query
{
"query": {
"nested": {
"path": "pricePeriods",
"query": {
"function_score": {
"functions": [
{
"gauss": {
"pricePeriods.dkk": {
"origin": "2500",
"scale": "2500",
"decay": 0.8
}
},
"filter": {
"range": {
"pricePeriods.periodTo": {
"gte": "2016-03-17T00:00:00.000"
}
}
}
}
]
}
}
}
}
}
这有帮助吗?