Scoring script filter
A scoring script filter first filters the documents and then uses a brute-force exact k-NN search on the results. For example, the following query searches for hotels with a rating between 8 and 10, inclusive, that provide parking and then performs a k-NN search to return the 3 hotels that are closest to the specified location:
POST /hotels-index/_search
{
"size": 3,
"query": {
"script_score": {
"query": {
"bool": {
"filter": {
"bool": {
"must": [
{
"range": {
"rating": {
"gte": 8,
"lte": 10
}
}
},
{
"term": {
"parking": "true"
}
}
]
}
}
}
},
"script": {
"source": "knn_score",
"lang": "knn",
"params": {
"field": "location",
"query_value": [
5.0,
4.0
],
"space_type": "l2"
}
}
}
}
}