id: https://nde.nl/ontology/hc/class/MeasurementUnit
name: MeasurementUnit

prefixes:
  linkml: https://w3id.org/linkml/
  hc: https://nde.nl/ontology/hc/
  qudt: http://qudt.org/schema/qudt/
  schema: http://schema.org/

imports:
  - linkml:types
  - ../slots/has_or_had_identifier  # was: type_id - migrated per Rule 56 (2026-01-16)
  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
  - ../slots/has_or_had_description  # was: type_description - migrated per Rule 53/56 (2026-01-16)
classes:
  MeasurementUnit:
    class_uri: qudt:Unit
    description: |
      A unit of measurement used for quantifying values in heritage custodian
      data, such as frames, objects, faces, pixels, bytes, or other countable
      or measurable entities.
      
      Note: This class complements MeasureUnit by focusing on computational
      and digital measurement units rather than physical measurement units.
    slots:
      - has_or_had_identifier  # was: type_id - migrated per Rule 56 (2026-01-16)
      - has_or_had_label  # was: type_label
      - has_or_had_description  # was: type_description - migrated per Rule 53/56 (2026-01-16)
    close_mappings:
      - schema:unitCode
    annotations:
      specificity_score: "0.40"
      specificity_rationale: "Measurement units are broadly applicable across many contexts."

  # Common measurement units for digital heritage contexts
  FrameUnit:
    is_a: MeasurementUnit
    description: A video frame as a unit of measurement.

  ObjectUnit:
    is_a: MeasurementUnit
    description: A detected object as a unit of measurement in computer vision.

  FaceUnit:
    is_a: MeasurementUnit
    description: A detected face as a unit of measurement in facial recognition.

  PixelUnit:
    is_a: MeasurementUnit
    description: A pixel as a unit of measurement for image dimensions.

  ByteUnit:
    is_a: MeasurementUnit
    description: A byte as a unit of measurement for data size.

  TokenUnit:
    is_a: MeasurementUnit
    description: A token as a unit of measurement for text processing.