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measurement

vr.tr.measurement · thing-q12453

Let an agent treat measurements as results with value, unit, method, uncertainty and traceability, and never report a number without its unit and source.

Thing Registry Activities and processes ACT.ACT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Result Value and unit.

Value

Number and unit.

Value

Result.

  1. What is the measured value and unit? measurement
  2. What is the uncertainty? measurement

Measurand

What was measured.

Measurand

The quantity.

  1. What exactly was measured? definition
  2. Under which conditions? definition
Method How it was measured.

Instrument

Tool.

Instrument

Instrument and calibration.

  1. Which instrument was used, and is it calibrated? provenance
  2. When was it last calibrated? provenance

Procedure

Standard method.

Procedure

Method standard.

  1. Which standard procedure was followed? provenance
  2. Were there deviations? boundary
Quality Traceability and competence.

Traceability

To SI.

Traceability

Traceability chain.

  1. Is the result traceable to SI units? provenance
  2. Through which laboratory? provenance

Competence

Accreditation.

Accreditation

Lab accreditation.

  1. Is the laboratory accredited? provenance
  2. For this measurement? boundary
Use Decisions based on results.

Decision

Conformity.

Conformity

Conformity decision.

  1. Does the result show conformity with the requirement? boundary
  2. How is uncertainty taken into account? definition

Reporting

Communication.

Reporting

How to report.

  1. How should the result be reported? action
  2. What caveats apply? boundary

Classifiers Filled

Family
Thing Registry
Category
Activities and processes
Entry kind
thing
Plane
ACT
Domain
ACT.ACT
Other names and narrower kinds
wow and flutter measurement, hardness test, chain wear gauge, meridian line, hypsometric tints, rating system, academic grading system, video game difficulty, character difficulty, flame spread, medical scale, Jefferson Scale of Physician Empathy

What it is Filled

The process of determining the magnitude of a quantity by comparison with a standard, using instruments and methods, with a result expressed as a value, unit and uncertainty.

Why it exists Filled

Let an agent treat measurements as results with value, unit, method, uncertainty and traceability, and never report a number without its unit and source.

Distinguishing features Filled

  • Compares with a standard
  • Has uncertainty
  • Traceability links to SI units
  • Rating systems are assessments, not physical measurements

What robots and AI may and may not do Filled

Must not

  • Report a measurement without its unit or with false precision.
  • Adjust or select results to reach a desired value.
  • Use an instrument known to be out of calibration for results others will rely on.
  • Present an estimate as a measurement.

Only with a human decision

  • Discarding measurements as outliers in safety, medical or legal contexts.

May

  • Take measurements with calibrated instruments and report value, unit and uncertainty.
  • Check that an instrument is within its calibration date before use.

Moral aspects Filled

  • Trade, safety and justice depend on honest measurement.
  • Biased measurement can disadvantage the people measured.

Who is affected

  • People who rely on the results
  • Buyers and sellers
  • People measured

Owners Filled

Steward

The laboratory or person making the measurement; metrology institutes keep the reference standards.

Links to other meta-models Filled

parent

  • Q52948 - registry parent class
  • Q791801 - registry parent class

related

  • quantity value - result
  • instrument - tools
  • metrology - science
  • estimation - less rigorous

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.measurement
  • Wikidata: Q12453 (https://www.wikidata.org/wiki/Q12453)
  • calibration certificate number: lab-specific traceability

Direct properties not applicable Not applicable

Not applicable

Plane ACT: no invented physical properties.

Recognition optional Filled

  • Values with units and uncertainty
  • Calibration certificates
  • Tests such as hardness tests and gauges
  • Instruments, readings, certificates and data tables.

Capabilities and actions required Filled

  • measure, with calibrated instruments
  • estimate uncertainty
  • calibrate instruments against standards
  • report results with units and uncertainty

Hazards and failure modes required Filled

  • Missing units or uncertainty
  • Uncalibrated instruments
  • Measurement bias

Standards and interfaces required Filled

  • SI Brochure
  • ISO/IEC Guide 98-3 (GUM)
  • ISO/IEC 17025 for laboratories
  • Legal metrology law for trade

Context of use required Filled

  • Knowing quantities reliably for science, trade, health and engineering.
  • physical measurements
  • chemical and biological analyses
  • tests such as hardness tests
  • surveys and ratings (in a looser sense)

Sources Filled

  1. Wikidata item Q12453: measurement - identity and sense of the item
  2. Wikipedia: Measurement - general description of the item

Open questions

  • Should measurement kinds be separate entries?
  • How should uncertainty be recorded consistently?
  • How should ratings be separated from physical measurements?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q12453/spec.json