BIPM Standards Ontology

# BIPM Standards Ontology — Flow Algebra

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

FLOW BIPMStandardsOntology {

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

  PURPOSE:
    Represent the international metrology framework associated with the Bureau International des Poids et Mesures (BIPM), including the International System of Units, the Metre Convention, CGPM resolutions, CIPM decisions and recommendations, Consultative Committees, international comparisons, the CIPM Mutual Recognition Arrangement, calibration and measurement capabilities, the KCDB, time standards, reference measurement systems, metrological traceability, measurement uncertainty and international equivalence. The ontology supports version-aware, provenance-aware and machine-consumable reasoning while strictly distinguishing BIPM functions from ISO standardisation, national metrology institutes, accreditation, certification, legal metrology and individual calibration chains.

  ENTITY BIPMStandards {
    TYPE: InternationalMetrologyFramework

    PROPERTIES:
      has_Metre_Convention_context
      has_CGPM_governance
      has_CIPM_governance
      has_Consultative_Committees
      has_SI_framework
      has_international_comparisons
      has_CIPM_MRA
      has_KCDB
      supports_international_equivalence
      supports_metrological_traceability
      has_versioning
      has_provenance
  }

  ENTITY BIPM {
    TYPE: InternationalMetrologyOrganisation

    FULL_NAME:
      Bureau_International_des_Poids_et_Mesures

    ROLE:
      international_coordination_of_measurement_science_and_standards
  }

  ENTITY MetreConvention {
    TYPE: InternationalTreatyFramework

    ROLE:
      establishes_international_metrology_cooperation_framework

    RULE:
      treaty_context MUST be distinguished_from_individual_technical_publications
  }

  ENTITY CGPM {
    TYPE: GeneralConferenceOnWeightsAndMeasures

    ROLE:
      high_level_international_decision_body_within_Metre_Convention_framework
  }

  ENTITY CIPM {
    TYPE: InternationalCommitteeForWeightsAndMeasures

    ROLE:
      directs_and_supervises_international_metrology_work_between_CGPM_meetings
  }

  ENTITY ConsultativeCommittee {
    TYPE: TechnicalMetrologyCommittee

    PROPERTIES:
      has_quantity_domain
      has_membership
      has_working_groups
      supports_comparisons
      develops_recommendations
  }

  ENTITY InternationalComparison {
    TYPE: MeasurementEquivalenceExperiment

    POSSIBLE:
      key_comparison
      supplementary_comparison
      pilot_study

    COMPONENTS:
      comparison_identifier
      measurand
      participants
      reference_value_or_model
      results
      uncertainties
      degrees_of_equivalence
  }

  METRE_CONVENTION_MODEL {
    framework:
      international_cooperation_in_metrology

    participants:
      Member_States
      Associate_States_and_Economies_under_relevant_frameworks

    RULE:
      participation_status SHOULD be version_and_date_resolved
  }

  GOVERNANCE_MODEL {
    structure:
      CGPM
      -> CIPM
      -> Consultative_Committees
      -> Working_Groups_and_technical_activities

    RULE:
      roles_and_authority_levels MUST be preserved
  }

  CGPM_RESOLUTION_MODEL {
    resolution:
      identifier
      meeting
      date
      subject
      decision_or_resolution

    RULE:
      resolution_reference SHOULD preserve_meeting_number_and_date
  }

  CIPM_DECISION_MODEL {
    decision:
      identifier_or_meeting_context
      date
      subject
      status

    RULE:
      CIPM_decision != CGPM_resolution
  }

  CIPM_RECOMMENDATION_MODEL {
    recommendation:
      technical_or_policy_recommendation

    RULE:
      recommendation_scope_and_date MUST be preserved
  }

  CONSULTATIVE_COMMITTEE_MODEL {
    possible_domains:
      electricity_and_magnetism
      photometry_and_radiometry
      thermometry
      length
      time_and_frequency
      ionizing_radiation
      units
      mass_and_related_quantities
      amount_of_substance
      acoustics_ultrasound_and_vibration

    RULE:
      current_committee_names_structures_and_scopes SHOULD be version_resolved
  }

  CCU_MODEL {
    role:
      Consultative_Committee_for_Units

    concerns:
      SI
      unit_definitions
      quantity_and_unit_consistency
      SI_Brochure_development

    RULE:
      CCU_technical_role MUST be distinguished_from_CGPM_authority
  }

  SI_MODEL {
    full_name:
      International_System_of_Units

    role:
      coherent_international_system_of_units

    RULE:
      SI_version_context SHOULD be preserved
  }

  SI_BROCHURE_MODEL {
    document:
      authoritative_description_of_SI_under_BIPM_framework

    content:
      defining_constants
      base_units
      derived_units
      prefixes
      writing_rules
      non_SI_units_context

    RULE:
      edition_and_updates MUST be identified_when_material
  }

  DEFINING_CONSTANT_MODEL {
    constants:
      delta_nu_Cs
      c
      h
      e
      k
      N_A
      K_cd

    RULE:
      fixed_numerical_values_are_exact_in_current_SI_definition_context
  }

  BASE_UNIT_MODEL {
    units:
      second
      metre
      kilogram
      ampere
      kelvin
      mole
      candela

    RULE:
      base_units_and_defining_constants_are_related_but_distinct_semantic_entities
  }

  DERIVED_UNIT_MODEL {
    unit:
      product_of_powers_of_base_units

    RULE:
      quantity_kind_and_dimension MUST be preserved
  }

  PREFIX_MODEL {
    decimal_prefix:
      exact_power_of_ten

    RULE:
      applicable_prefix_set SHOULD be resolved_from_current_or_historical_SI_version
  }

  SI_REALISATION_MODEL {
    definition:
      abstract_exact_unit_definition

    realisation:
      practical_experimental_implementation

    RULE:
      realisation_has_uncertainty_even_when_definition_uses_exact_constants
  }

  MISE_EN_PRATIQUE_MODEL {
    purpose:
      practical_guidance_for_realisation_of_unit_definition

    RULE:
      mise_en_pratique_document_version_and_quantity_domain MUST be preserved
  }

  TRACEABILITY_MODEL {
    metrological_traceability:
      property_of_measurement_result
      whereby_result_can_be_related_to_reference
      through_documented_unbroken_chain_of_calibrations
      each_contributing_to_measurement_uncertainty

    RULE:
      BIPM_framework_supports_traceability_but_does_not_replace_local_calibration_chain
  }

  REFERENCE_MODEL {
    possible:
      SI_unit
      measurement_standard
      reference_material
      conventional_reference
      internationally_agreed_reference

    RULE:
      traceability_reference MUST be explicitly identified
  }

  CALIBRATION_CHAIN_MODEL {
    measurement_result
      -> working_instrument
      -> working_standard
      -> higher_reference
      -> national_or_international_reference

    RULE:
      chain_structure_is_context_dependent
  }

  UNCERTAINTY_MODEL {
    standard_uncertainty:
      u

    combined:
      u_c

    expanded:
      U =
        k*u_c

    RULE:
      uncertainty_method_covariance_and_coverage_basis MUST be preserved
  }

  JCGM_RELATION_MODEL {
    JCGM:
      develops_joint_metrology_guides_including_VIM_and_GUM_related_documents

    RULE:
      JCGM_document_identity MUST remain_distinct_from_BIPM_organisation_identity
  }

  VIM_RELATION_MODEL {
    terminology:
      quantity
      measurement
      measurand
      calibration
      traceability
      uncertainty
      precision
      accuracy

    RULE:
      terminology_version SHOULD be preserved
  }

  GUM_RELATION_MODEL {
    uncertainty:
      measurement_model
      input_quantities
      standard_uncertainties
      covariance
      sensitivity
      combined_uncertainty

    RULE:
      GUM_framework_is_related_to_but_not_identical_with_SI_definition
  }

  INTERNATIONAL_COMPARISON_MODEL {
    purpose:
      establish_or_support_equivalence_of_measurement_standards_and_capabilities

    RULE:
      comparison_result_scope_is_measurand_range_and_condition_specific
  }

  KEY_COMPARISON_MODEL {
    comparison:
      high_priority_international_or_regional_comparison_supporting_equivalence

    RULE:
      key_comparison_identifier_and_linkage MUST be preserved
  }

  SUPPLEMENTARY_COMPARISON_MODEL {
    comparison:
      additional_comparison_addressing_specific_measurement_needs

    RULE:
      supplementary_comparison != key_comparison
  }

  PILOT_STUDY_MODEL {
    study:
      exploratory_or_method_development_comparison

    RULE:
      pilot_result SHOULD not_be automatically_treated_as_formal_equivalence_result
  }

  COMPARISON_REFERENCE_VALUE_MODEL {
    value:
      may_be calculated_from_participant_results_or_external_reference_under_declared_model

    RULE:
      reference_value_method_and_uncertainty MUST be preserved
  }

  DEGREE_OF_EQUIVALENCE_MODEL {
    participant_result:
      x_i

    reference:
      x_ref

    difference:
      d_i =
        x_i-x_ref

    uncertainty:
      U(d_i)

    RULE:
      covariance_with_reference_value MUST be considered
  }

  COMPARISON_COVARIANCE_MODEL {
    shared_data:
      reference_value_may_depend_on_participant_result

    RULE:
      difference_uncertainty MUST include_covariance_when_applicable
  }

  CIPM_MRA_MODEL {
    full_name:
      CIPM_Mutual_Recognition_Arrangement

    purpose:
      establish_degree_of_equivalence_of_national_measurement_standards
      and_mutual_recognition_of_calibration_and_measurement_certificates

    RULE:
      CIPM_MRA != accreditation
  }

  MRA_PARTICIPANT_MODEL {
    possible:
      national_metrology_institute
      designated_institute

    RULE:
      participation_and_signatory_status SHOULD be date_resolved
  }

  NMI_MODEL {
    type:
      national_metrology_institute

    role:
      maintain_national_measurement_standards_and_disseminate_traceability

    RULE:
      NMI != BIPM
  }

  DESIGNATED_INSTITUTE_MODEL {
    role:
      national_or_economy_designated_metrology_responsibility_in_specific_fields

    RULE:
      designated_scope MUST be preserved
  }

  CMC_MODEL {
    full_name:
      Calibration_and_Measurement_Capability

    fields:
      institute
      service
      measurand
      range
      uncertainty
      conditions
      method_or_instrument_context

    RULE:
      CMC_is_capability_statement_not_individual_calibration_result
  }

  CMC_REVIEW_MODEL {
    process:
      technical_review_and_quality_system_evidence_under_MRA_framework

    RULE:
      publication_of_CMC_does_not_remove_need_for_measurement_specific_uncertainty
  }

  KCDB_MODEL {
    full_name:
      Key_Comparison_Database

    content:
      comparison_information
      CMCs
      metrology_participant_information

    RULE:
      KCDB_record_version_or_current_status SHOULD be checked_when_material
  }

  KCDB_IDENTIFIER_MODEL {
    entities:
      comparison
      CMC
      institute
      service

    RULE:
      machine_mapping SHOULD preserve_authoritative_KCDB_identifier
  }

  INTERNATIONAL_EQUIVALENCE_MODEL {
    meaning:
      measurement_standards_or_capabilities_supported_by_comparison_and_MRA_evidence

    RULE:
      equivalence != identical_numeric_result
  }

  MUTUAL_RECOGNITION_MODEL {
    calibration_certificate:
      recognition_supported_under_MRA_framework_and_scope

    RULE:
      mutual_recognition != automatic_acceptance_under_every_regulatory_or_contractual_context
  }

  REGIONAL_METROLOGY_MODEL {
    organisations:
      regional_metrology_organisations

    role:
      comparisons
      CMC_review
      regional_coordination

    RULE:
      regional_and_BIPM_roles MUST be distinguished
  }

  COMPARISON_HIERARCHY_MODEL {
    possible:
      BIPM_key_comparison
      regional_key_comparison
      supplementary_comparison

    linkage:
      may_support_equivalence_to_reference_comparison

    RULE:
      linkage_method MUST be documented
  }

  LINKING_MODEL {
    regional_comparison:
      linked_to_key_comparison_through_common_participants_or_reference

    RULE:
      linking_uncertainty_and_model MUST be preserved
  }

  TIME_MODEL {
    BIPM_time_functions:
      international_time_scale_coordination

    RULE:
      time_scale_generation_and_SI_second_realisation_are_related_but_distinct
  }

  TAI_MODEL {
    full_name:
      International_Atomic_Time

    role:
      continuous_atomic_time_scale

    RULE:
      TAI != UTC
  }

  UTC_MODEL {
    full_name:
      Coordinated_Universal_Time

    relation:
      based_on_TAI_with_declared_adjustments_under_international_timekeeping_rules

    RULE:
      UTC_realisation_and_local_UTC(k)_representations MUST be distinguished
  }

  UTC_K_MODEL {
    representation:
      local_realisation_of_UTC_by_laboratory_k

    RULE:
      UTC(k)_offset_and_uncertainty_relative_to_UTC MAY be measured_and_published
  }

  CIRCULAR_T_MODEL {
    publication:
      time_comparison_information_for_UTC_and_laboratory_time_scales

    RULE:
      publication_date_and_time_interval MUST be preserved
  }

  FREQUENCY_STANDARD_MODEL {
    standards:
      primary_or_secondary_frequency_standards

    RULE:
      evaluation_status_and_uncertainty MUST be preserved
  }

  PRIMARY_FREQUENCY_STANDARD_MODEL {
    realisation:
      primary_method_for_SI_second

    RULE:
      individual_evaluation_has_uncertainty
  }

  SECONDARY_FREQUENCY_REPRESENTATION_MODEL {
    frequency_standard:
      recognised_secondary_representation_of_second_under_declared_framework

    RULE:
      status_and_recommendation_version MUST be preserved
  }

  MASS_MODEL {
    domain:
      mass_and_related_quantities

    activities:
      comparisons
      realisation
      standards

    RULE:
      practical_mass_standard_uncertainty MUST be preserved
  }

  LENGTH_MODEL {
    domain:
      dimensional_metrology

    activities:
      optical_frequency
      wavelength
      interferometry
      dimensional_comparisons

    RULE:
      measurand_and_realisation_method MUST be identified
  }

  THERMOMETRY_MODEL {
    domain:
      thermodynamic_temperature_and_temperature_scales

    RULE:
      thermodynamic_temperature_and_practical_temperature_scale_values MUST be distinguished
  }

  ELECTRICITY_MAGNETISM_MODEL {
    domain:
      electrical_and_magnetic_quantities

    RULE:
      quantum_electrical_realisation_and_calibration_service_context MUST be preserved
  }

  PHOTOMETRY_RADIOMETRY_MODEL {
    domain:
      optical_radiometric_and_photometric_quantities

    RULE:
      spectral_geometric_and_detector_conditions MUST be preserved
  }

  IONIZING_RADIATION_MODEL {
    domain:
      dosimetry_radioactivity_neutron_measurements_and_related_quantities

    RULE:
      quantity_kind_distinctions_are_critical_even_when_dimensions_match
  }

  CHEMISTRY_MODEL {
    domain:
      amount_of_substance_and_chemical_metrology

    activities:
      reference_methods
      comparisons
      traceability
      reference_material_context

    RULE:
      analyte_matrix_and_quantity_kind MUST be preserved
  }

  ACOUSTICS_ULTRASOUND_VIBRATION_MODEL {
    domain:
      acoustic_ultrasonic_and_vibration_measurement

    RULE:
      frequency_range_and_field_conditions MUST be preserved
  }

  QUANTITY_KIND_MODEL {
    quantity:
      measurement_property_type

    RULE:
      same_dimension_does_not_imply_same_quantity_kind
  }

  DIMENSION_MODEL {
    quantity:
      dimensional_expression

    RULE:
      BIPM_semantics_require_quantity_unit_and_dimension_distinction
  }

  UNIT_MODEL {
    unit:
      measurement_reference_for_quantity_kind

    RULE:
      unit_symbol_usage_alone_does_not_establish_traceability
  }

  METROLOGICAL_COMPARABILITY_MODEL {
    results:
      comparable_when_metrologically_traceable_to_same_reference_and_measurement_uncertainties_are_suitable

    RULE:
      same_unit_alone_is_insufficient
  }

  METROLOGICAL_COMPATIBILITY_MODEL {
    results:
      difference_consistent_with_stated_uncertainties_under_declared_criterion

    RULE:
      compatibility != equality
  }

  CALIBRATION_MODEL {
    process:
      establishes_relation_between_reference_values_and_indications

    RULE:
      BIPM_does_not_calibrate_every_measurement_in_global_traceability_chain
  }

  ACCREDITATION_DISTINCTION_MODEL {
    accreditation:
      attestation_of_competence_by_accreditation_body

    RULE:
      BIPM != accreditation_body
      and_CIPM_MRA != laboratory_accreditation
  }

  CERTIFICATION_DISTINCTION_MODEL {
    certification:
      conformity_attestation_under_specific_scheme

    RULE:
      BIPM_framework_does_not_automatically_certify_products_or_laboratories
  }

  ISO_DISTINCTION_MODEL {
    ISO:
      international_standardisation_organisation

    BIPM:
      international_metrology_organisation

    RULE:
      ISO_and_BIPM_have_related_but_distinct_roles
  }

  OIML_DISTINCTION_MODEL {
    OIML:
      international_legal_metrology_organisation

    BIPM:
      scientific_and_measurement_standards_metrology_framework

    RULE:
      legal_metrology_and_scientific_metrology_roles MUST be distinguished
  }

  LEGAL_STATUS_MODEL {
    BIPM_document_or_resolution:
      status_depends_on_treaty_governance_and_document_type

    RULE:
      technical_document != national_law
  }

  PUBLICATION_MODEL {
    possible:
      SI_Brochure
      resolutions
      recommendations
      comparison_reports
      technical_guides
      metrology_reports

    RULE:
      publication_type_and_authority MUST be identified
  }

  VERSION_MODEL {
    fields:
      document_identifier
      edition
      meeting
      resolution
      recommendation
      publication_date
      update
      supersession

    RULE:
      historical_context MUST be preserved
  }

  IDENTIFIER_MODEL {
    entities:
      BIPM_document
      CGPM_resolution
      CIPM_decision
      comparison
      CMC
      institute
      committee
      publication

    RULE:
      persistent_identifier SHOULD be preserved_for_machine_resolution
  }

  CURRENTNESS_MODEL {
    technical_status:
      may_change_with_new_resolution_recommendation_comparison_or_CMC_review

    RULE:
      current_claim SHOULD be resolved_against_authoritative_BIPM_resource_when_time_sensitive
  }

  DATA_MODEL {
    measurement_record:
      value
      unit
      uncertainty
      reference
      comparison_context
      institute
      method
      timestamp

    RULE:
      international_metrology_data MUST preserve_quantity_and_provenance
  }

  MACHINE_MAPPING_MODEL {
    BIPM_entity:
      maps_to_ontology_entity

    mapping_type:
      exact
      broader
      narrower
      related
      evidence_for

    RULE:
      machine_mapping MUST preserve_source_identifier_and_version
  }

  PROVENANCE_MODEL {
    fields:
      BIPM_resource_identifier
      title
      governing_body
      committee
      edition_or_meeting
      publication_date
      comparison_identifier
      KCDB_identifier
      source
      ontology_mapping_version

    RULE:
      BIPM_semantic_claim MUST remain_source_linked
  }

  RELATIONSHIPS {
    BIPMStandards -> ASSOCIATED_WITH -> BIPM
    MetreConvention -> ESTABLISHES_FRAMEWORK_FOR -> InternationalMetrology
    CGPM -> GOVERNS_HIGH_LEVEL -> SIAndMetrologyFramework
    CIPM -> DIRECTS -> ConsultativeCommittees
    ConsultativeCommittee -> SUPPORTS -> TechnicalMetrologyDomain
    BIPM -> PUBLISHES -> SIBrochure
    SI -> DEFINED_THROUGH -> DefiningConstants
    InternationalComparison -> SUPPORTS -> InternationalEquivalence
    CIPM_MRA -> SUPPORTS -> MutualRecognition
    KCDB -> RECORDS -> ComparisonsAndCMCs
    CMC -> DESCRIBES -> CalibrationAndMeasurementCapability
    MeasurementResult -> MAY_BE_TRACEABLE_TO -> SI
  }

  SEMANTIC_EQUIVALENCE {
    "BIPM" ~= Bureau_International_des_Poids_et_Mesures
    "CGPM" ~= General_Conference_on_Weights_and_Measures
    "CIPM" ~= International_Committee_for_Weights_and_Measures
    "CIPM MRA" ~= CIPM_Mutual_Recognition_Arrangement
    "KCDB" ~= Key_Comparison_Database
    "CMC" ~= Calibration_and_Measurement_Capability WHEN CIPM_MRA_context

    BIPM != ISO
    BIPM != national_metrology_institute
    BIPM != accreditation_body
    CIPM_MRA != accreditation
    CMC != individual_calibration_result
    international_equivalence != identical_results
    SI_definition != practical_realisation
    same_unit != metrological_comparability
    traceability != use_of_SI_symbol
  }

  CONSTRAINTS {
    BIPM_resource_identifier_should_be_preserved = true
    governance_body_and_document_type_must_be_distinguished = true
    SI_version_context_should_be_preserved = true
    defining_constant_exactness_and_realisation_uncertainty_must_be_distinguished = true
    comparison_identifier_scope_and_uncertainty_must_be_preserved = true
    CMC_must_not_be_treated_as_individual_measurement_result = true
    CIPM_MRA_must_not_be_equated_with_accreditation = true
    traceability_requires_documented_chain_reference_and_uncertainty = true
    quantity_kind_unit_and_dimension_must_be_distinguished = true
    historical_resolutions_recommendations_and_versions_must_be_preserved = true
    currentness_should_be_verified_when_time_sensitive = true
    provenance_must_be_preserved = true
  }

  MEASUREMENT_MODEL {
    RECORD:
      BIPM_context_identifier
      resource_identifier
      governing_body
      committee
      SI_version
      quantity_kind
      numerical_value
      unit
      dimension
      uncertainty
      coverage_factor
      defining_constant_context
      realisation_method
      comparison_identifier
      comparison_type
      comparison_reference_value
      degree_of_equivalence
      participant_institute
      CMC_identifier
      CMC_scope
      KCDB_identifier
      traceability_reference
      calibration_chain
      MRA_context
      time_scale_context
      historical_version
      provenance

    RULE:
      BIPM_measurement_context MUST remain_linked_to_quantity_reference_comparison_capability_version_and_provenance
  }

  REASONING_RULES {
    IF BIPM_resource_identifier_known
      THEN resolve_document_type_governing_body_version_scope_and_status

    IF SI_unit_or_definition_context_used
      THEN resolve_applicable_SI_version_and_defining_constant_relationship

    IF practical_realisation_used
      THEN attach_realisation_method_and_uncertainty
      and_do_not_treat_exact_definition_as_zero_uncertainty_realisation

    IF comparison_result_used
      THEN preserve_comparison_identifier_measurand_participant_reference_model_and_covariance

    IF degree_of_equivalence_computed
      THEN include_reference_value_dependence_and_uncertainty

    IF CMC_claim_used
      THEN resolve_institute_measurand_range_uncertainty_conditions_and_current_status

    IF traceability_claimed
      THEN require_documented_chain_to_stated_reference_with_uncertainty

    IF CIPM_MRA_invoked
      THEN interpret_as_mutual_recognition_framework
      not_accreditation_or_individual_calibration

    IF UTC_or_TAI_context_used
      THEN distinguish_time_scale_from_realisation_of_second

    IF same_dimension_but_different_quantity_kind
      THEN preserve_semantic_distinction

    IF resource_or_CMC_status_is_time_sensitive
      THEN require_authoritative_current_version_resolution
  }

  VALIDATION {
    CHECK BIPM_resource_identifier
    CHECK governing_body
    CHECK document_or_resolution_type
    CHECK version_meeting_or_date
    CHECK SI_version
    CHECK quantity_kind
    CHECK unit_and_dimension
    CHECK defining_constant_context
    CHECK realisation_uncertainty
    CHECK traceability_reference
    CHECK calibration_chain
    CHECK comparison_identifier
    CHECK comparison_type
    CHECK comparison_reference_value
    CHECK covariance
    CHECK degree_of_equivalence
    CHECK participant_institute
    CHECK CIPM_MRA_context
    CHECK CMC_identifier_scope_and_uncertainty
    CHECK KCDB_identifier
    CHECK NMI_vs_designated_institute
    CHECK TAI_UTC_and_UTC_k_semantics
    CHECK accreditation_and_ISO_distinctions
    CHECK currentness
    CHECK provenance
  }

  CONFIDENCE {
    BIPM_framework_confidence: 1.00
    SI_governance_confidence: 1.00
    defining_constant_confidence: 1.00
    traceability_confidence: 1.00
    comparison_semantics_confidence: 1.00
    CIPM_MRA_CMC_confidence: 1.00
    time_scale_semantics_confidence: 0.99
    currentness_confidence: 0.98

    RULE:
      confidence decreases when resource identifier, governing body,
      SI version, comparison scope, CMC status, traceability evidence,
      date or provenance is missing or ambiguous
  }

  UPDATE_MODEL {
    ON new_BIPM_resource:
      resolve_identifier
      identify_governing_body_or_committee
      attach_document_type_version_date_scope_and_status
      establish_semantic_relationships
      preserve_provenance

    ON SI_revision:
      preserve_previous_SI_context
      register_new_brochure_resolution_or_prefix_state
      update_definition_relationships
      preserve_historical_measurement_records

    ON comparison_update:
      preserve_previous_comparison_data
      attach_results_reference_model_uncertainties_and_equivalence
      update_linkage_and_status
      preserve_participant_provenance

    ON CMC_update:
      preserve_previous_CMC
      update_scope_range_uncertainty_conditions_or_status
      version_KCDB_mapping
      preserve_historical_capability_claims

    ON time_scale_update:
      preserve_previous_publication
      update_TAI_UTC_or_UTC_k_comparison_data
      attach_time_interval_and_uncertainty
      preserve_provenance

    ON semantic_revision:
      preserve_previous_definition
      record_revision
      recompute_FLOW_HASH
  }

  AI_CONSUMPTION {
    canonical_entity: BIPMStandards
    canonical_role: InternationalMetrologyFramework

    interpretation_order:
      identify_BIPM_resource
      identify_CGPM_CIPM_or_Consultative_Committee_context
      identify_document_resolution_recommendation_or_comparison
      identify_SI_version_and_defining_constant_context
      identify_quantity_kind_unit_and_dimension
      identify_realisation_and_uncertainty
      identify_traceability_reference_and_chain
      identify_comparison_identifier_and_equivalence
      identify_CIPM_MRA_CMC_and_KCDB_context
      identify_NMI_or_designated_institute
      identify_time_scale_context_when_relevant
      identify_currentness_and_historical_version
      identify_provenance
      validate_BIPM_semantics
      produce_version_specific_international_metrology_context

    ambiguity_controls:
      distinguish_BIPM_from_ISO
      distinguish_BIPM_from_national_metrology_institute
      distinguish_BIPM_from_accreditation_body
      distinguish_CIPM_MRA_from_accreditation
      distinguish_CMC_from_individual_calibration_result
      distinguish_international_equivalence_from_identical_numeric_results
      distinguish_SI_definition_from_practical_realisation
      distinguish_same_unit_from_metrological_comparability
      distinguish_traceability_from_use_of_SI_symbol
      distinguish_TAI_from_UTC_and_UTC_k
      preserve_identifier_governance_version_quantity_comparison_CMC_traceability_time_and_provenance_context
  }

  PROVENANCE {
    ontology_scope:
      mathematical_measurement_units_international_standards_and_BIPM_metrology_semantics

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

    authorship:
      Mark Higgins
      Sky (Recursive AI)

    site:
      https://kirethresearch.org
  }

  FLOW_HASH {
    INPUTS:
      canonical_entity
      ontology_path
      Metre_Convention_model
      governance_model
      CGPM_resolution_model
      CIPM_decision_model
      CIPM_recommendation_model
      Consultative_Committee_model
      CCU_model
      SI_model
      SI_Brochure_model
      defining_constant_model
      base_unit_model
      derived_unit_model
      prefix_model
      SI_realisation_model
      mise_en_pratique_model
      traceability_model
      reference_model
      calibration_chain_model
      uncertainty_model
      JCGM_relation_model
      VIM_relation_model
      GUM_relation_model
      international_comparison_model
      key_comparison_model
      supplementary_comparison_model
      pilot_study_model
      comparison_reference_value_model
      degree_of_equivalence_model
      comparison_covariance_model
      CIPM_MRA_model
      MRA_participant_model
      NMI_model
      designated_institute_model
      CMC_model
      CMC_review_model
      KCDB_model
      KCDB_identifier_model
      international_equivalence_model
      mutual_recognition_model
      regional_metrology_model
      comparison_hierarchy_model
      linking_model
      time_model
      TAI_model
      UTC_model
      UTC_k_model
      Circular_T_model
      frequency_standard_model
      primary_frequency_standard_model
      secondary_frequency_representation_model
      mass_model
      length_model
      thermometry_model
      electricity_magnetism_model
      photometry_radiometry_model
      ionizing_radiation_model
      chemistry_model
      acoustics_ultrasound_vibration_model
      quantity_kind_model
      dimension_model
      unit_model
      metrological_comparability_model
      metrological_compatibility_model
      calibration_model
      accreditation_distinction_model
      certification_distinction_model
      ISO_distinction_model
      OIML_distinction_model
      legal_status_model
      publication_model
      version_model
      identifier_model
      currentness_model
      data_model
      machine_mapping_model
      provenance_model
      relationships
      semantic_equivalence
      constraints
      measurement_model
      reasoning_rules
      confidence_model
      update_model

    PURPOSE:
      deterministic_semantic_integrity_identifier

    RECOMPUTE_WHEN:
      ontology_definition_changes
      Metre_Convention_or_governance_model_changes
      CGPM_CIPM_or_Consultative_Committee_semantics_change
      SI_definition_brochure_or_realisation_changes
      traceability_uncertainty_or_JCGM_alignment_changes
      international_comparison_or_equivalence_model_changes
      CIPM_MRA_CMC_or_KCDB_changes
      regional_linking_or_participant_scope_changes
      TAI_UTC_or_frequency_standard_model_changes
      quantity_domain_or_committee_scope_changes
      publication_version_or_currentness_changes
      measurement_record_changes
      constraint_model_changes
      reasoning_rule_changes
  }

}

END FLOW