Extract entities

  • 3 minutes

Named Entity Recognition identifies entities that are mentioned in the text. Entities are grouped into categories and subcategories, for example:

  • Person
  • Location
  • DateTime
  • Organization
  • Address
  • Email
  • URL

Note

For a full list of categories, see the Azure AI Language documentation.

Input for entity recognition is similar to input for other Azure AI Language API functions:

{
  "documents": [
    {
      "language": "en",
      "id": "1",
      "text": "Joe went to London on Saturday"
    }
  ]
}

The response includes a list of categorized entities found in each document:

{
  "documents":[
      {
          "id":"1",
          "entities":[
          {
            "text":"Joe",
            "category":"Person",
            "offset":0,
            "length":3,
            "confidenceScore":0.62
          },
          {
            "text":"London",
            "category":"Location",
            "subcategory":"GPE",
            "offset":12,
            "length":6,
            "confidenceScore":0.88
          },
          {
            "text":"Saturday",
            "category":"DateTime",
            "subcategory":"Date",
            "offset":22,
            "length":8,
            "confidenceScore":0.8
          }
        ],
        "warnings":[]
      }
  ],
  "errors":[],
  "modelVersion":"2021-01-15"
}