Enrichment

Document AI uses Enterprise Knowledge Graph to normalize and enrich entity extraction results (for supported fields). For example, the addresses 123 Main St Apt 1 and 123 Main street # 1 could be normalized to the same standardized address.

For each supported field, Document AI also returns a normalizedValue in addition to the raw extracted field, normalizing the literal text. This contains the data in a standardized format to reduce post-processing.

Most data belongs to one of the following categories:

• Money
• Date
• Timestamp
• Address
• Boolean
• Integer
• Float

Sample response

The enriched values can be found in the entities.normalizedValue field as shown in the following truncated sample:

{
  "entities": [
    {
      "textAnchor": {
        "textSegments": [ ... ],
        "content": "Google Singapore"
      },
      "type": "employer_name",
      "mentionText": "Google Singapore",
      "confidence": 0.69933707,
      "pageAnchor": {
        "pageRefs": [
          {
            "boundingPoly": {
              "normalizedVertices": [ ... ]
            }
          }
        ]
      },
      "id": "9",
      "normalizedValue": {
        "text": "Google Asia Pacific, Singapore"
      }
    }
  ]
}

In the sample, the original employer_name "Google Singapore" has been normalized to "Google Asia Pacific, Singapore".

In the Google Cloud console, the enriched and normalized fields are annotated with G. For example:

Sample normalized field shown in the web application.

Supported processors

Here are the processors and fields that support entity enrichment.

Note: Enriched fields are subject to change with new processor versions. Follow the Release notes for Document AI updates.

Processors	Enriched fields
Bank Statement Parser Category Pretrained Solution type Lending Functions OCR, Entity Extraction Release stage General availability Access status Public Full processor details Detailed entry	bank_address bank_name
W2 Parser Category Pretrained Solution type Lending Functions OCR, Entity Extraction Release stage General availability Access status Public Full processor details Detailed entry	EmployerNameAndAddress EIN
Pay Slip Parser Category Pretrained Solution type Lending Functions OCR, Entity Extraction Release stage General availability Access status Public Full processor details Detailed entry	employer_address employer_name
Expense Parser Category Pretrained Solution type Procurement Functions OCR, Entity Extraction Release stage General availability Access status Public Full processor details Detailed entry	supplier_address supplier_name supplier_phone
Invoice Parser Category Pretrained Solution type Procurement Functions OCR, Entity Extraction Release stage General availability Access status Public Full processor details Detailed entry	supplier_address supplier_name supplier_phone