Create a trivial model and rescore with it

inference-rescore-example.sh

#!/bin/sh


curl -XPUT -u 'elastic:password' -H 'Content-Type: application/json' 'http://localhost:9200/_ml/inference/density_model?pretty' -d '
{
  "input": {
    "field_names": [
      "key_metric"]
  },
  "description": "test model for regression",
  "definition": {
    "trained_model": {
      "ensemble": {
        "feature_names": [
          "key_metric"
        ],
        "target_type": "regression",
        "trained_models": [
          {
            "tree": {
              "feature_names": [
                "key_metric"
              ],
              "tree_structure": [
                {
                  "node_index": 0,
                  "split_feature": 0,
                  "split_gain": 12,
                  "threshold": 38,
                  "decision_type": "lte",
                  "default_left": true,
                  "left_child": 1,
                  "right_child": 2
                },
                {
                  "node_index": 1,
                  "leaf_value": 1.0
                },
                {
                  "node_index": 2,
                  "leaf_value": 0.2
                }
              ],
              "target_type": "regression"
            }
          }
        ]
      }
    }
  }
}'




curl -XPUT -u 'elastic:password' -H 'Content-Type: application/json' 'http://localhost:9200/goods?pretty' -d '
{
  "mappings": {
    "properties": {
      "goods": {
        "type": "text"
      },
      "size": {
        "type": "double"
      }
    }
  }
}'

curl -XPOST -u 'elastic:password' -H 'Content-Type: application/json' http://localhost:9200/goods/_doc -d '
{
  "goods" : "television",
  "size" : "32.0"
}'

curl -XPOST -u 'elastic:password' -H 'Content-Type: application/json' http://localhost:9200/goods/_doc -d '
{
  "goods" : "VCR",
  "size" : "0.0"
}'

curl -XPOST -u 'elastic:password' -H 'Content-Type: application/json' 'http://localhost:9200/goods/_doc?refresh' -d '
{
  "goods" : "widescreen television",
  "size" : "40.0"
}'

curl -XGET -u 'elastic:password' -H 'Content-Type: application/json' 'http://localhost:9200/goods/_search?pretty' -d '
{
  "query": {
    "term": {
      "goods": {
        "value": "television"
      }
    }
  }
}'

curl -XGET -u 'elastic:password' -H 'Content-Type: application/json' 'http://localhost:9200/goods/_search?pretty' -d '
{
  "query": {
    "term": {
      "goods": {
        "value": "television"
      }
    }
  },
  "rescore": {
    "ml_rescore": {
      "model_id": "density_model",
      "field_mappings": {"size": "key_metric"},
      "inference_config": { "regression": {} }
    }
  }
}'