International Standards

# International Standards Ontology — Flow Algebra

URL: https://kirethresearch.org/booksai-core/ontologies/mathematical-ontologies/measurement-units-ontologies/international-standards.html

FLOW InternationalStandardsOntology {

  DOMAIN:
    Mathematical Ontologies
    -> Measurement & Units Ontologies
    -> International Standards Ontology

  PURPOSE:
    Represent the international standards framework governing measurement, quantities, units, metrology, calibration, uncertainty, traceability, terminology, laboratory competence and interoperable scientific measurement. The ontology models international standards organisations, standards documents, editions and revisions, normative and informative content, SI governance, quantity and unit vocabularies, metrological terminology, uncertainty guidance, calibration and traceability requirements, laboratory competence, conformity and accreditation relationships, reference standards, machine-readable identifiers, provenance, version control and semantic reasoning while preserving distinctions between standards, laws, regulations, guidance documents, recommendations and implementation policies.

  ENTITY InternationalStandards {
    TYPE: MeasurementStandardsFramework

    PROPERTIES:
      has_standards_organisations
      has_standards_documents
      has_measurement_scope
      has_quantity_and_unit_semantics
      has_metrology_semantics
      has_versioning
      has_normative_status
      has_provenance
  }

  ENTITY StandardsOrganisation {
    TYPE: StandardsAuthorityOrBody

    POSSIBLE:
      BIPM
      ISO
      IEC
      OIML
      JCGM
      IUPAC
      IUPAP
      national_metrology_institute
      national_standards_body
      accreditation_body
  }

  ENTITY StandardDocument {
    TYPE: ControlledNormativeOrGuidanceDocument

    COMPONENTS:
      identifier
      title
      organisation
      edition
      publication_date
      revision_status
      scope
      clauses
      references
      status
  }

  ENTITY StandardIdentifier {
    TYPE: PersistentDocumentReference

    EXAMPLES:
      ISO_identifier
      IEC_identifier
      ISO_IEC_joint_identifier
      JCGM_identifier
      BIPM_document_identifier
      OIML_identifier

    RULE:
      identifier MUST remain_linked_to_edition_or_version
  }

  STANDARDS_HIERARCHY_MODEL {
    possible:
      international
      regional
      national
      organisational
      laboratory
      project_specific

    RULE:
      hierarchy_does_not_automatically_determine_legal_force
  }

  INTERNATIONAL_STANDARD_MODEL {
    standard:
      developed_or_published_by_recognised_international_standardisation_body

    RULE:
      exact_status_depends_on_issuing_body_and_document_type
  }

  NORMATIVE_MODEL {
    normative_content:
      requirements_definitions_or_provisions_intended_to_form_part_of_standard

    RULE:
      normative_status MUST be distinguished_from_informative_material
  }

  INFORMATIVE_MODEL {
    informative_content:
      explanatory_examples_notes_annexes_or_guidance

    RULE:
      informative_text MUST not_be_treated_as_mandatory_requirement_without_external_basis
  }

  REQUIREMENT_LANGUAGE_MODEL {
    possible:
      shall
      should
      may
      can

    RULE:
      interpretation_depends_on_document_drafting_rules_and_context
  }

  VERSION_MODEL {
    standard:
      identifier

    versions:
      edition
      amendment
      corrigendum
      revision
      withdrawal
      supersession

    RULE:
      semantic_claim MUST identify_applicable_version_when_material
  }

  EFFECTIVE_STATUS_MODEL {
    possible:
      current
      superseded
      withdrawn
      draft
      amended
      historical

    RULE:
      historical_measurement_records SHOULD preserve_standard_version_used_at_time
  }

  SCOPE_MODEL {
    fields:
      subject
      quantity_kinds
      industries
      measurement_processes
      exclusions
      jurisdiction_or_adoption_context

    RULE:
      standard_requirements MUST not_be_applied_beyond_scope_without_explicit_reason
  }

  BIPM_MODEL {
    role:
      international_metrology_coordination
      SI_maintenance_and_dissemination
      international_measurement_comparisons
      metrological_reference_framework

    RULE:
      BIPM_role MUST be distinguished_from_general_industry_standardisation
  }

  SI_BROCHURE_MODEL {
    subject:
      International_System_of_Units

    semantic_scope:
      base_units
      derived_units
      prefixes
      quantity_value_expression
      unit_symbols
      definitions

    RULE:
      SI_definition_version SHOULD be preserved
  }

  CGPM_MODEL {
    role:
      international_decisions_concerning_metrology_and_SI

    RULE:
      resolution_identifier_and_date SHOULD be preserved_when_cited
  }

  CIPM_MODEL {
    role:
      supervision_and_coordination_of_international_metrology_activities

    RULE:
      committee_decisions_and_recommendations_have_specific_scope
  }

  CIPM_MRA_MODEL {
    purpose:
      framework_for_international_equivalence_and_mutual_recognition_of_national_measurement_standards_and_calibration_measurement_certificates

    RULE:
      mutual_recognition_framework != metrological_traceability_definition
  }

  KCDB_MODEL {
    role:
      database_supporting_key_comparisons_and_calibration_measurement_capabilities

    RULE:
      database_entry_status_and_scope SHOULD be checked
  }

  ISO_MODEL {
    role:
      international_standardisation_across_broad_domains

    RULE:
      ISO_document_identifier_and_edition MUST be preserved
  }

  IEC_MODEL {
    role:
      international_electrotechnical_standardisation

    RULE:
      IEC_scope_often_intersects_measurement_instrumentation_and_electrical_quantities
  }

  ISO_IEC_MODEL {
    joint_standard:
      jointly_developed_or_published_context

    RULE:
      joint_identifier MUST be preserved_as_joint_reference
  }

  JCGM_MODEL {
    role:
      joint_committee_for_guides_in_metrology

    key_semantic_domains:
      measurement_uncertainty
      metrological_vocabulary

    RULE:
      JCGM_document_version MUST be preserved
  }

  VIM_MODEL {
    domain:
      international_vocabulary_of_metrology

    concepts:
      quantity
      measurand
      measurement
      measurement_result
      calibration
      metrological_traceability
      measurement_uncertainty
      precision
      accuracy

    RULE:
      VIM_terms SHOULD be interpreted_with_definition_notes_and_version_context
  }

  GUM_MODEL {
    domain:
      expression_of_uncertainty_in_measurement

    concepts:
      standard_uncertainty
      combined_standard_uncertainty
      covariance
      sensitivity_coefficients
      expanded_uncertainty
      coverage_factor

    RULE:
      GUM_framework_requires_measurement_model_and_uncertainty_components
  }

  GUM_SUPPLEMENT_MODEL {
    possible:
      Monte_Carlo_propagation
      multivariate_outputs
      modelling_extensions

    RULE:
      supplement_identifier_and_scope MUST be preserved
  }

  ISO_IEC_17025_MODEL {
    domain:
      competence_of_testing_and_calibration_laboratories

    concepts:
      competence
      impartiality
      consistent_operation
      methods
      equipment
      metrological_traceability
      reporting
      validity_of_results

    RULE:
      accreditation_to_standard != automatic_validity_of_every_individual_result
  }

  ISO_10012_MODEL {
    domain:
      measurement_management_systems

    concepts:
      measurement_processes
      measuring_equipment
      metrological_confirmation

    RULE:
      organisational_measurement_management != individual_calibration_event
  }

  ISO_IEC_17043_MODEL {
    domain:
      proficiency_testing

    RULE:
      proficiency_testing_supports_competence_evidence_but_does_not_replace_traceability
  }

  ISO_17034_MODEL {
    domain:
      competence_of_reference_material_producers

    RULE:
      reference_material_scope_and_certificate_information MUST be preserved
  }

  OIML_MODEL {
    role:
      international_legal_metrology

    concepts:
      measuring_instruments
      legal_control
      recommendations
      metrological_requirements

    RULE:
      OIML_recommendation != national_law_until_adopted_or_referenced_by_jurisdiction
  }

  IUPAC_MODEL {
    role:
      chemical_nomenclature_terminology_and_measurement_related_recommendations

    RULE:
      chemistry_quantity_and_unit_semantics SHOULD align_with_declared_reference_version
  }

  IUPAP_MODEL {
    role:
      physics_symbols_units_nomenclature_and_related_recommendations

    RULE:
      domain_recommendations_may_complement_SI_and_ISO_IEC_quantity_frameworks
  }

  QUANTITY_STANDARD_MODEL {
    subject:
      quantity_names_symbols_definitions_and_relationships

    RULE:
      quantity_kind_semantics MUST remain_distinct_from_units
  }

  UNIT_STANDARD_MODEL {
    subject:
      unit_names_symbols_definitions_and_prefixes

    RULE:
      unit_symbol_case_spacing_and_prefix_rules MAY be normative
  }

  ISO_IEC_80000_MODEL {
    domain:
      quantities_and_units

    structure:
      multiple_parts_by_quantity_domain

    RULE:
      part_number_and_edition MUST be identified
  }

  BASE_QUANTITY_MODEL {
    possible_SI_base_quantity:
      time
      length
      mass
      electric_current
      thermodynamic_temperature
      amount_of_substance
      luminous_intensity

    RULE:
      quantity_and_base_unit_are_distinct_entities
  }

  BASE_UNIT_MODEL {
    possible:
      second
      metre
      kilogram
      ampere
      kelvin
      mole
      candela

    RULE:
      unit_definition_should_be linked_to_applicable_SI_definition
  }

  DERIVED_UNIT_MODEL {
    coherent:
      derived_from_base_units_without_extra_numerical_factor

    RULE:
      special_name_and_base_expression SHOULD be semantically linked
  }

  PREFIX_STANDARD_MODEL {
    decimal_prefix:
      defined_power_of_ten

    RULE:
      prefix_version_and_current_SI_range SHOULD be resolved_from_applicable_SI_reference
  }

  SYMBOL_STANDARD_MODEL {
    concerns:
      uppercase_lowercase
      spacing
      multiplication
      division
      exponents
      italic_vs_roman_context

    RULE:
      typography_and_symbol_semantics SHOULD be distinguished
  }

  DECIMAL_MARKER_MODEL {
    representation:
      point_or_comma_under_language_or_standard_context

    RULE:
      machine_exchange SHOULD use_unambiguous_representation
  }

  MEASUREMENT_TERMINOLOGY_MODEL {
    concepts:
      measurand
      indication
      measured_quantity_value
      measurement_result
      measurement_error
      measurement_uncertainty
      calibration
      adjustment
      verification
      validation
      traceability

    RULE:
      terminology_source_and_version SHOULD be preserved
  }

  MEASURAND_MODEL {
    definition:
      quantity_intended_to_be_measured

    RULE:
      measurand_specification SHOULD include_relevant_conditions
  }

  MEASUREMENT_RESULT_MODEL {
    components:
      measured_quantity_value
      measurement_uncertainty
      relevant_metadata

    RULE:
      result_semantics MUST not_be reduced_to_numeric_value_alone
  }

  UNCERTAINTY_STANDARD_MODEL {
    measurement_model:
      Y =
        f(X_1,...,X_n)

    first_order:
      u_c^2(y) =
        sum_i sum_j(
          c_i*c_j*cov(X_i,X_j)
        )

    RULE:
      uncertainty_framework_and_assumptions MUST be identified
  }

  COVERAGE_MODEL {
    expanded_uncertainty:
      U =
        k*u_c

    RULE:
      coverage_factor_and_basis SHOULD be reported
  }

  TRACEABILITY_STANDARD_MODEL {
    measurement_result:
      related_to_reference
      through_documented_unbroken_calibration_chain
      each_link_contributing_uncertainty

    RULE:
      traceability != calibration_certificate_presence_alone
  }

  CALIBRATION_STANDARD_MODEL {
    calibration:
      establishes_relation_between_reference_values_and_indications
      and_relation_for_obtaining_measurement_result

    RULE:
      calibration != adjustment
  }

  REFERENCE_STANDARD_MODEL {
    standard:
      reference_for_calibrating_other_standards_or_instruments

    RULE:
      hierarchy_role_and_scope MUST be preserved
  }

  CERTIFIED_REFERENCE_MATERIAL_MODEL {
    material:
      certified_property_value
      uncertainty
      traceability
      intended_use

    RULE:
      certificate_version_and_validity MUST be preserved
  }

  LABORATORY_COMPETENCE_MODEL {
    elements:
      personnel
      facilities
      equipment
      methods
      traceability
      quality_assurance
      reporting

    RULE:
      competence_scope_is_specific_not_universal
  }

  ACCREDITATION_MODEL {
    accreditation_body:
      attests_competence_against_declared_standard_and_scope

    RULE:
      accreditation != certification
      and_accreditation != metrological_traceability
  }

  CERTIFICATION_MODEL {
    certification:
      third_party_attestation_related_to_products_processes_systems_or_persons_under_declared_scheme

    RULE:
      certification_and_accreditation_are_distinct
  }

  CONFORMITY_ASSESSMENT_MODEL {
    process:
      demonstrate_whether_specified_requirements_are_fulfilled

    RULE:
      conformity_assessment != calibration
  }

  LEGAL_METROLOGY_MODEL {
    measurement:
      subject_to_legal_requirements

    possible:
      trade
      health
      safety
      environment

    RULE:
      applicable_legal_requirements_depend_on_jurisdiction
  }

  REGULATION_DISTINCTION_MODEL {
    standard:
      generally_consensus_or_normative_document

    regulation:
      legally_binding_rule_from_authority

    RULE:
      standard_does_not_automatically_have_force_of_law
  }

  LAW_DISTINCTION_MODEL {
    law:
      jurisdiction_specific_legal_requirement

    RULE:
      international_standard != law
  }

  GUIDANCE_DISTINCTION_MODEL {
    guide:
      explanatory_or_recommended_practice

    RULE:
      guide_status MUST be distinguished_from_mandatory_requirement
  }

  RECOMMENDATION_MODEL {
    recommendation:
      may_be_adopted_by_member_states_or_organisations

    RULE:
      recommendation_legal_effect_depends_on_adoption_context
  }

  ADOPTION_MODEL {
    international_standard:
      may_be_adopted_as_national_standard

    metadata:
      national_identifier
      adoption_date
      modifications

    RULE:
      national_adoption_may_be_identical_or_modified
  }

  HARMONISATION_MODEL {
    standards:
      aligned_across_organisations_or_jurisdictions

    RULE:
      harmonised_does_not_always_mean_textually_identical
  }

  CROSS_REFERENCE_MODEL {
    standard_A:
      normatively_or_informatively_references_standard_B

    RULE:
      referenced_version_policy MUST be identified
  }

  DATED_REFERENCE_MODEL {
    reference:
      specific_edition_or_date

    RULE:
      later_revision_does_not_automatically_replace_dated_reference
  }

  UNDATED_REFERENCE_MODEL {
    reference:
      document_without_specific_edition

    RULE:
      applicable_latest_version_depends_on_referencing_document_rules
  }

  NORMATIVE_REFERENCE_MODEL {
    referenced_document:
      necessary_for_application_of_standard

    RULE:
      normative_reference_status MUST be preserved
  }

  INFORMATIVE_REFERENCE_MODEL {
    referenced_document:
      background_or_guidance

    RULE:
      informative_reference != mandatory_dependency
  }

  CLAUSE_MODEL {
    standard:
      sections
      clauses
      subclauses
      annexes

    RULE:
      requirement_should_be traceable_to_specific_clause_when_possible
  }

  ANNEX_MODEL {
    annex:
      normative_or_informative

    RULE:
      annex_status MUST be identified
  }

  DEFINITION_MODEL {
    term:
      definition
      notes
      examples
      source

    RULE:
      definition_context_and_version MUST be preserved
  }

  CONFLICT_MODEL {
    standards:
      may_have_different_scope_terminology_or_requirements

    RULE:
      apparent_conflict_requires_scope_version_and_normative_status_analysis
  }

  PRECEDENCE_MODEL {
    applicable_documents:
      precedence_may_be_defined_by_contract_regulation_or_scheme

    RULE:
      ontology MUST not_invent_precedence_without_declared_rule
  }

  CONTRACTUAL_MODEL {
    contract:
      may_require_compliance_with_specific_standard_version

    RULE:
      contractual_requirement_is_external_to_standard_itself
  }

  QUALITY_MANAGEMENT_MODEL {
    standardised_process:
      document_control
      records
      competence
      corrective_action
      risk

    RULE:
      quality_management_semantics SHOULD remain_distinct_from_measurement_equations
  }

  DOCUMENT_CONTROL_MODEL {
    fields:
      identifier
      version
      approval
      issue_date
      status
      owner
      superseded_by

    RULE:
      uncontrolled_copy SHOULD not_be treated_as_authoritative_current_version
  }

  CHANGE_CONTROL_MODEL {
    revision:
      compare_previous_and_current_requirements

    RULE:
      changes_affecting_measurement_process SHOULD trigger_impact_review
  }

  HISTORICAL_STANDARD_MODEL {
    measurement_record:
      standard_version_valid_or_used_at_measurement_time

    RULE:
      historical_result MUST not_be silently_reinterpreted_under_new_standard_version
  }

  DIGITAL_STANDARD_MODEL {
    representation:
      machine_readable_standard_metadata
      identifiers
      clauses
      definitions
      relationships

    RULE:
      digital_representation MUST preserve_authoritative_version_and_source
  }

  SEMANTIC_IDENTIFIER_MODEL {
    standard_entity:
      persistent_URI_or_identifier

    RULE:
      identifier SHOULD distinguish_document_family_from_specific_edition
  }

  ONTOLOGY_ALIGNMENT_MODEL {
    standard_term:
      maps_to_ontology_entity

    mapping:
      exact
      broader
      narrower
      related
      version_specific

    RULE:
      semantic_mapping MUST not_claim_exact_equivalence_when_definitions_differ
  }

  MACHINE_INTERPRETATION_MODEL {
    input:
      standard_identifier
      clause
      term
      version
      scope

    output:
      structured_semantic_rule

    RULE:
      machine_interpretation SHOULD retain_source_text_reference_without_replacing_authoritative_document
  }

  COPYRIGHT_AWARE_MODEL {
    standards_document:
      may_be_copyright_protected

    ontology:
      stores_semantic_reference_and_original_analysis
      rather_than_unlicensed_full_standard_text

    RULE:
      authoritative_standard_access_conditions MUST be respected
  }

  PROVENANCE_MODEL {
    fields:
      organisation
      document_identifier
      edition
      publication_date
      source
      access_date_when_external
      mapping_author
      ontology_version

    RULE:
      standards_based_semantics MUST be provenance_linked
  }

  VALIDITY_MODEL {
    standard_application:
      depends_on
        current_status
        edition
        scope
        adoption
        contractjurisdiction
        intended_use

    RULE:
      applicability MUST be evaluated_contextually
  }

  COMPLIANCE_MODEL {
    claim:
      conforms_to_standard

    REQUIRE:
      standard_identifier
      edition
      scope
      evidence
      assessment_method

    RULE:
      compliance_claim MUST not_be inferred_from_partial_similarity
  }

  INTEROPERABILITY_MODEL {
    standards:
      shared_quantity_unit_and_data_semantics

    benefit:
      comparable_exchangeable_measurement_information

    RULE:
      syntactic_interoperability_without_semantic_alignment_is_incomplete
  }

  DATA_EXCHANGE_MODEL {
    fields:
      quantity_kind
      value
      unit
      uncertainty
      timestamp
      traceability
      method
      standard_version

    RULE:
      exchange_format SHOULD preserve_metrological_context
  }

  METADATA_MODEL {
    fields:
      standard_identifier
      title
      organisation
      edition
      publication_date
      status
      scope
      clause_identifier
      normative_status
      referenced_documents
      quantity_kinds
      units
      definitions
      adoption_context
      supersession
      provenance

    RULE:
      metadata MUST support_version_specific_standard_resolution
  }

  RELATIONSHIPS {
    InternationalStandards -> CONTAINS -> StandardDocument
    StandardDocument -> PUBLISHED_BY -> StandardsOrganisation
    StandardDocument -> HAS -> Edition
    StandardDocument -> HAS -> Scope
    StandardDocument -> CONTAINS -> Clause
    Clause -> MAY_CONTAIN -> Requirement
    StandardDocument -> MAY_REFERENCE -> OtherStandardDocument
    SI -> GOVERNED_THROUGH -> InternationalMetrologyFramework
    VIM -> DEFINES -> MetrologicalTerminology
    GUM -> GUIDES -> MeasurementUncertaintyEvaluation
    ISO_IEC_17025 -> ADDRESSES -> LaboratoryCompetence
    OIMLRecommendation -> ADDRESSES -> LegalMetrology
    NationalStandard -> MAY_ADOPT -> InternationalStandard
  }

  SEMANTIC_EQUIVALENCE {
    "international standards" ~= internationally_issued_measurement_and_metrology_standards_framework WHEN declared_scope
    "SI" ~= International_System_of_Units
    "VIM" ~= international_vocabulary_of_metrology WHEN declared_edition
    "GUM" ~= guide_to_expression_of_uncertainty_in_measurement WHEN declared_edition

    international_standard != law
    international_standard != regulation
    standard != guidance_in_all_contexts
    accreditation != certification
    accreditation != traceability
    calibration != conformity_assessment
    normative_content != informative_content
    current_standard != historical_standard_version
  }

  CONSTRAINTS {
    standard_identifier_must_be_preserved = true
    issuing_organisation_must_be_identified = true
    edition_or_version_should_be_identified_when_material = true
    scope_must_be_respected = true
    normative_and_informative_content_must_be_distinguished = true
    dated_and_undated_references_must_be_distinguished = true
    standards_and_legal_requirements_must_be_distinguished = true
    historical_measurements_must_preserve_standard_version_context = true
    terminology_mapping_must_not_overstate_equivalence = true
    standards_based_claims_should_preserve_provenance = true
  }

  MEASUREMENT_MODEL {
    RECORD:
      standards_context_identifier
      standard_identifier
      standard_title
      organisation
      edition
      publication_date
      status
      scope
      clause_identifier
      normative_status
      quantity_kind
      unit_system
      terminology_reference
      uncertainty_reference
      traceability_reference
      laboratory_competence_reference
      calibration_reference
      adoption_context
      jurisdiction_when_relevant
      contractual_context
      superseded_by
      ontology_mapping
      provenance

    RULE:
      standards_context MUST remain_linked_to_specific_document_version_scope_and_source
  }

  REASONING_RULES {
    IF standard_identifier_known
      THEN resolve_issuing_organisation_edition_scope_and_status

    IF requirement_derived_from_standard
      THEN attach_clause_and_normative_status_when_available

    IF document_superseded
      THEN preserve_historical_version
      AND identify_successor_without_overwriting_historical_context

    IF measurement_record_created_under_specific_standard_version
      THEN retain_that_version_for_historical_interpretation

    IF standard_referenced_by_regulation_or_contract
      THEN record_external_legal_or_contractual_basis
      rather_than_infer_standard_itself_is_law

    IF two_standard_terms_have_similar_names
      THEN compare_definitions_scope_and_version
      before_asserting_semantic_equivalence

    IF traceability_claim_evaluated
      THEN apply_metrological_traceability_semantics
      and_do_not_equate_with_accreditation_or_certificate_presence

    IF uncertainty_guidance_applied
      THEN preserve_measurement_model_covariance_coverage_and_document_version

    IF national_adoption_exists
      THEN preserve_both_international_and_national_identifiers
      and_note_modification_status

    IF standard_status_unknown
      THEN mark_current_applicability_as_requires_verification
  }

  VALIDATION {
    CHECK standard_identifier
    CHECK issuing_organisation
    CHECK document_type
    CHECK edition
    CHECK publication_date
    CHECK current_or_historical_status
    CHECK scope
    CHECK normative_vs_informative_status
    CHECK clause_reference
    CHECK dated_vs_undated_references
    CHECK quantity_and_unit_semantics
    CHECK VIM_terminology_context
    CHECK GUM_uncertainty_context
    CHECK SI_version_context
    CHECK calibration_and_traceability_semantics
    CHECK laboratory_competence_scope
    CHECK accreditation_vs_certification
    CHECK legal_or_regulatory_adoption
    CHECK national_adoption
    CHECK supersession
    CHECK ontology_mapping
    CHECK provenance
  }

  CONFIDENCE {
    standards_framework_confidence: 1.00
    SI_semantics_confidence: 1.00
    metrology_vocabulary_confidence: 1.00
    uncertainty_framework_confidence: 1.00
    traceability_semantics_confidence: 1.00
    laboratory_competence_semantics_confidence: 0.99
    legal_adoption_context_confidence: 0.98
    version_applicability_confidence: 0.98

    RULE:
      confidence decreases when document identifier, edition, scope,
      status, normative classification, adoption context,
      source or provenance is missing or ambiguous
  }

  UPDATE_MODEL {
    ON new_standard_registration:
      assign_or_resolve_identifier
      identify_organisation
      attach_title_edition_date_scope_and_status
      classify_document_and_normative_structure
      establish_cross_references
      preserve_provenance

    ON standard_revision:
      preserve_previous_edition
      register_new_edition
      map_changed_definitions_requirements_and_clauses
      update_supersession_graph
      preserve_historical_measurement_context

    ON adoption_revision:
      preserve_international_standard
      attach_national_or_regulatory_adoption
      identify_modifications_and_effective_date
      update_applicability_context

    ON terminology_revision:
      preserve_previous_definition
      attach_new_term_definition_and_source
      update_ontology_alignment
      flag_version_specific_semantic_changes

    ON measurement_standard_context_update:
      preserve_original_record
      attach_applicable_standard_versions
      validate_scope
      do_not_rewrite_historical_context_with_newer_standard

    ON semantic_revision:
      preserve_previous_definition
      record_revision
      recompute_FLOW_HASH
  }

  AI_CONSUMPTION {
    canonical_entity: InternationalStandards
    canonical_role: MeasurementStandardsFramework

    interpretation_order:
      identify_standard_or_standards_family
      identify_issuing_organisation
      identify_document_identifier
      identify_edition_and_status
      identify_scope
      identify_normative_or_informative_content
      identify_quantity_unit_or_metrology_domain
      identify_SI_VIM_GUM_or_laboratory_context
      identify_cross_references
      identify_adoption_regulatory_or_contractual_context
      identify_supersession_and_historical_version
      identify_ontology_mapping
      identify_provenance
      validate_standard_context
      apply_version_specific_semantics

    ambiguity_controls:
      distinguish_international_standard_from_law
      distinguish_standard_from_regulation
      distinguish_normative_from_informative_content
      distinguish_accreditation_from_certification
      distinguish_accreditation_from_metrological_traceability
      distinguish_calibration_from_conformity_assessment
      distinguish_current_from_historical_standard_versions
      distinguish_document_family_from_specific_edition
      distinguish_semantic_similarity_from_exact_definition_equivalence
      preserve_identifier_organisation_version_scope_status_adoption_and_provenance_context
  }

  PROVENANCE {
    ontology_scope:
      mathematical_measurement_units_and_international_standards_semantics

    parent_path:
      Ontologies
      -> Mathematical Ontologies
      -> Measurement & Units Ontologies
      -> International Standards Ontology

    authorship:
      Mark Higgins
      Sky (Recursive AI)

    site:
      https://kirethresearch.org
  }

  FLOW_HASH {
    INPUTS:
      canonical_entity
      ontology_path
      standards_hierarchy_model
      international_standard_model
      normative_model
      informative_model
      requirement_language_model
      version_model
      effective_status_model
      scope_model
      BIPM_model
      SI_Brochure_model
      CGPM_model
      CIPM_model
      CIPM_MRA_model
      KCDB_model
      ISO_model
      IEC_model
      ISO_IEC_model
      JCGM_model
      VIM_model
      GUM_model
      GUM_supplement_model
      ISO_IEC_17025_model
      ISO_10012_model
      ISO_IEC_17043_model
      ISO_17034_model
      OIML_model
      IUPAC_model
      IUPAP_model
      quantity_standard_model
      unit_standard_model
      ISO_IEC_80000_model
      base_quantity_model
      base_unit_model
      derived_unit_model
      prefix_standard_model
      symbol_standard_model
      decimal_marker_model
      measurement_terminology_model
      measurand_model
      measurement_result_model
      uncertainty_standard_model
      coverage_model
      traceability_standard_model
      calibration_standard_model
      reference_standard_model
      certified_reference_material_model
      laboratory_competence_model
      accreditation_model
      certification_model
      conformity_assessment_model
      legal_metrology_model
      regulation_distinction_model
      law_distinction_model
      guidance_distinction_model
      recommendation_model
      adoption_model
      harmonisation_model
      cross_reference_model
      dated_reference_model
      undated_reference_model
      normative_reference_model
      informative_reference_model
      clause_model
      annex_model
      definition_model
      conflict_model
      precedence_model
      contractual_model
      quality_management_model
      document_control_model
      change_control_model
      historical_standard_model
      digital_standard_model
      semantic_identifier_model
      ontology_alignment_model
      machine_interpretation_model
      copyright_aware_model
      provenance_model
      validity_model
      compliance_model
      interoperability_model
      data_exchange_model
      metadata_model
      relationships
      semantic_equivalence
      constraints
      measurement_model
      reasoning_rules
      confidence_model
      update_model

    PURPOSE:
      deterministic_semantic_integrity_identifier

    RECOMPUTE_WHEN:
      ontology_definition_changes
      standards_organisation_or_document_model_changes
      SI_VIM_GUM_or_quantity_unit_framework_changes
      laboratory_competence_or_accreditation_semantics_change
      calibration_traceability_or_uncertainty_semantics_change
      standard_version_status_or_supersession_changes
      normative_reference_or_clause_mapping_changes
      national_adoption_or_regulatory_context_changes
      ontology_alignment_or_digital_standard_model_changes
      measurement_record_changes
      constraint_model_changes
      reasoning_rule_changes
  }

}

END FLOW