semantic-label-qcode-valid#

Code

SL.QCODE.001

Validator

Compatibility

Tags

Summary#

If the Wikidata ontology is used, Q-Codes must be valid, properly formatted, and retrievable from wikidata.org

Description#

When using Wikidata Q-Codes for semantic labeling, the codes must follow the proper format (Q followed by numbers) and represent valid Wikidata entities that can be retrieved from wikidata.org.

Why is it required?#

  • Ensures semantic labels reference valid, retrievable entities

  • Maintains consistency with Wikidata ontology standards

  • Enables proper ML training with verified ground truth data

Examples#

# Invalid: Malformed Q-Codes
def Mesh "InvalidLabels" {
    uniform token[] apiSchemas = ["SemanticsLabelsAPI:wikidata_qcode"]
    token[] semantics:labels:wikidata_qcode = [
        "Q",           # Too short
        "QABC",        # Contains letters
        "123",         # Missing Q prefix
        "Q-1"          # Contains invalid characters
    ]
}

# Valid: Properly formatted Q-Codes
def Mesh "ValidLabels" {
    uniform token[] apiSchemas = ["SemanticsLabelsAPI:wikidata_qcode"]
    token[] semantics:labels:wikidata_qcode = [
        "Q150",        # Valid Q-Code for "car"
        "Q1420",       # Valid Q-Code for "tree"
        "Q35509"       # Valid Q-Code for "building"
    ]
}

How to comply#

Use properly formatted Q-Codes that:

  1. Start with capital “Q”

  2. Follow with one or more digits (0-9)

  3. Reference valid Wikidata entities

  4. Can be retrieved from wikidata.org

For More Information#