Increase score for single word matches (plural / singular) versus multiple words matches?

Elastic Stack Elasticsearch
1

So I am trying to build an e-commerce like engine and I'd like to improve my queries / indexing to cater for the following scenario.

Sample index using english_minimal to match stuff like dress with dresses but not dresser:

{
  "settings": {
	"analysis": {
	  "analyzer": {
		"my_analyzer": {
		  "tokenizer": "standard",
		  "filter": [
			"lowercase",
			"filter_english_minimal"
		  ]
		}
	  },
	  "filter": {
		"filter_english_minimal": {
		  "type": "stemmer",
		  "name": "minimal_english"
		}
	  }
	}
  }
}

Sample documents:

[{
  "name": "Dress shirt red",
  "categories": ["clothing","dress shirt"]
}, {
  "name": "Mini dress black",
  "categories": ["clothing","dresses"]
}, {
  "name": "Chelsea boots",
  "categories": ["clothing","dress boots"]
}, {
  "name": "Floral dress",
  "categories": ["clothing","dress"]
},  {
  "name": "Midi white dress",
  "categories": ["clothing","midi dress"]
}]

My current query is:

{
    "query": {
        "bool": {
            "must": [
                {
                    "bool": {
                        "should": [
                            {
                                "multi_match": {
                                    "query": "dress",
                                    "minimum_should_match": "100%",
                                    "type": "cross_fields"
                                }
                            },
                            {
                                "multi_match": {
                                    "query": "dress",
                                    "minimum_should_match": "100%",
                                    "type": "best_fields",
                                    "fuzziness": "AUTO",
                                    "prefix_length": 2
                                }
                            }
                        ]
                    }
                }
            ],
            "should": [
                {
                    "multi_match": {
                        "query": "dress",
                        "type": "phrase",
                        "boost": 6,
                        "slop": 5
                    }
                }
            ]
        }
    }
}

which returns the following:

{
    "took": 602,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 5,
            "relation": "eq"
        },
        "max_score": 15.492477,
        "hits": [
            {
                "_index": "test",
                "_id": "y4yCMX8BIpIN3Vwrn8m_",
                "_score": 15.492477,
                "_source": {
                    "name": "Floral dress",
                    "categories": [
                        "clothing",
                        "dress"
                    ]
                }
            },
            {
                "_index": "test",
                "_id": "yIyBMX8BIpIN3Vwrocm-",
                "_score": 3.081841,
                "_source": {
                    "name": "Dress shirt red",
                    "categories": [
                        "clothing",
                        "dress shirt"
                    ]
                }
            },
            {
                "_index": "test",
                "_id": "zIyCMX8BIpIN3Vwr_sm3",
                "_score": 3.081841,
                "_source": {
                    "name": "Midi white dress",
                    "categories": [
                        "clothing",
                        "midi dress"
                    ]
                }
            },
            {
                "_index": "test",
                "_id": "yoyCMX8BIpIN3VwrRclb",
                "_score": 2.9274213,
                "_source": {
                    "name": "Chelsea boots",
                    "categories": [
                        "clothing",
                        "dress boots"
                    ]
                }
            },
            {
                "_index": "test",
                "_id": "yYyBMX8BIpIN3Vwr6cme",
                "_score": 1.7833835,
                "_source": {
                    "name": "Mini dress black",
                    "categories": [
                        "clothing",
                        "dresses"
                    ]
                }
            }
        ]
    }
}

Is there any way to get the category dresses rank higher than dress boots or dress shirt ?

2

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