# Count matched words
**URL:** https://discuss.elastic.co/t/count-matched-words/269294
**Category:** Elasticsearch
**Created:** [April 6, 2021, 7:51am UTC](https://discuss.elastic.co/t/count-matched-words/269294 "2021-04-06T07:51:33Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@ndkmath1](https://discuss.elastic.co/u/ndkmath1)
#### Post date: [April 6, 2021, 7:51am UTC](https://discuss.elastic.co/t/count-matched-words/269294/1 "2021-04-06T07:51:33Z")
I'm doing something with ES Learning to rank. I want to count how many words in a query matched with a document and take it as a feature (number\_of\_matched\_words) for LTR.
Ex: q = "iphone 11", d = "iphone 11 64gb". In this case, assume that we tokenize by space, then number\_of\_matched\_words = 2.
I can write a query like below in ES to get \_score=2
```auto
{
"query": {
"bool": {
"should": [
{
"constant_score": {
"filter": {
"term": {
"searchable_name": "iphone"
}
}
}
},
{
"constant_score": {
"filter": {
"term": {
"searchable_name": "11"
}
}
}
}
],
"minimum_should_match": 0
}
}
}
```
I want to create a feature like that for ES LTR.
`PUT /_ltr/_featureset/test_featureset`
```auto
{
"featureset": {
"features": [
{
"name": "number_of_matched_words",
"params": [
"q"
],
"template_language": "mustache",
"template": {
"bool": {
"should": [
{
"constant_score": {
"filter": {
"term": {
"searchable_name": "iphone"
}
}
}
},
{
"constant_score": {
"filter": {
"term": {
"searchable_name": "11"
}
}
}
}
],
"minimum_should_match": 0
}
}
}
]
},
"validation": {
"params": {
"q": "iphone 11"
},
"index": "test_index"
}
}
```
It's a bit hard to parameterize (I want to change 'iphone' and '11' to some params like {{token\_1}} and {{token\_2}}) because I don't know how many should clause I have (it depends on the query)
Do we have any query which can do the same thing as should clause above (I'm expecting a query with only one param, i.e: {{q}}) ? Or How I can parameterize my query to use it as a feature.
Thank in advance.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 4, 2021, 7:52am UTC](https://discuss.elastic.co/t/count-matched-words/269294/2 "2021-05-04T07:52:27Z")
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