Search Confidence

Reference

Naurt provides you with two tools to understand the quality of a match from the geocoder.

1. Data Accuracy: the expected quality of geographic data for that address
2. Data Confidence: how likely the found address is to be a match

This page will discuss how search confidence works.

Confidence

Confidence is how likely Naurt thinks a found address is to be the correct address searched for.

Each Hit will have a search_confidence field which varies from 0.0 to 1.0. 0.0 indicates an match extremely unlikely to be true, 1.0 indicates near certainty.

Example Response with Confidence

{
  "request_id": "86cdf4e9-cd7b-4836-aeb0-fd8d7fa03110",
  "responses": [
    {
      "additional_matches": [],
      "best_match": {
        "address": "35 Clarendon Road, Cheshunt, Waltham Cross, EN8 9DL, United Kingdom",
        "geojson": {
          "features": [
            {
              "geometry": {
                "coordinates": [
                  -0.036495,
                  51.70522
                ],
                "type": "Point"
              },
              "properties": {
                "naurt_type": "basic_geocode"
              },
              "type": "Feature"
            },
            {
              "geometry": {
                "coordinates": [
                  [
                    -0.036493108,
                    51.705280131
                  ]
                ],
                "type": "MultiPoint"
              },
              "properties": {
                "accuracy": {
                  "quality": "high"
                },
                "naurt_type": "naurt_door"
              },
              "type": "Feature"
            },
            {
              "geometry": {
                "coordinates": [
                  [
                    [
                      -0.0360252905826841,
                      51.70527881528648
                    ],
                    [
                      -0.0365740128653158,
                      51.70528105243699
                    ],
                    [
                      -0.0365748245513342,
                      51.70520459526901
                    ],
                    [
                      -0.0361215508466639,
                      51.7052027472609
                    ],
                    [
                      -0.0361220272710638,
                      51.70515787016552
                    ],
                    [
                      -0.0360265923958014,
                      51.70515748107477
                    ],
                    [
                      -0.0360252905826841,
                      51.70527881528648
                    ]
                  ]
                ],
                "type": "Polygon"
              },
              "properties": {
                "contributors": [
                  "© OpenStreetMap contributors"
                ],
                "naurt_type": "naurt_building"
              },
              "type": "Feature"
            },
            {
              "geometry": {
                "coordinates": [
                  [
                    [
                      -0.03655976563906356,
                      51.70536808870813
                    ],
                    [
                      -0.03656024515762707,
                      51.70534553822668
                    ],
                    [
                      -0.03642443948673787,
                      51.70534442920879
                    ],
                    [
                      -0.03642395996817435,
                      51.70536697969081
                    ],
                    [
                      -0.03655976563906356,
                      51.70536808870813
                    ]
                  ]
                ],
                "type": "Polygon"
              },
              "properties": {
                "accuracy": {
                  "quality": "high"
                },
                "minimum_parking_to_door_distance": 10.80533307445577,
                "naurt_type": "naurt_parking"
              },
              "type": "Feature"
            }
          ],
          "type": "FeatureCollection"
        },
        "id": "ef92d292-6146-3462-8c03-87049929151e",
        "search_confidence": 1.0
      },
      "status": "ok"
    }
  ],
  "version": "v2.6.10-dev.11"
}