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Published

area

vr.tr.area · thing-q11500

Let an agent handle area by definition, units, calculation, measurement and domain-specific uses.

Thing Registry Cross-cutting context XCT.QLT
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

Calculation Computing area.

Shape

Formula.

Shape

Area calculation.

  1. What is the area of this shape? measurement
  2. Which formula applies? definition

Units

Conversion.

Units

Units.

  1. What is the area in the required unit? measurement
  2. Is the conversion exact? boundary
Buildings Floor area.

Standard

Measurement rules.

Standard

Floor area standard.

  1. Which floor area standard is used: gross, net or IPMS? provenance
  2. What is included? definition

Comparison

Like for like.

Comparison

Comparison.

  1. Are areas measured the same way for comparison? boundary
  2. Who measured them? provenance
Land Cadastre.

Survey

Measurement.

Survey

Land survey.

  1. What is the official land area, from the cadastre? provenance
  2. How accurate is it? measurement

Maps

Projection.

Maps

Map areas.

  1. Is the map projection distorting areas? boundary
  2. Which projection preserves area? definition
Science Technical senses.

Cross section

Physics.

Cross section

Cross section.

  1. Is a reaction cross section meant? boundary
  2. In which unit? definition

Acoustics

Absorption area.

Acoustics

Absorption area.

  1. What is the equivalent absorption area of the room? measurement
  2. How is it measured? provenance

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.QLT
Other names and narrower kinds
fault zone, cadastral area, cross section, nuclear cross section, equivalent sound absorption area, fission cross section, slowing-down area, diffusion area, migration area, pupil opening area, effective area, surface area of the event horizon

What it is Filled

A quantity expressing the extent of a two-dimensional surface or region, measured in square units such as square metres; related technical quantities include cross sections in physics and equivalent absorption area in acoustics.

Why it exists Filled

Let an agent handle area by definition, units, calculation, measurement and domain-specific uses.

Distinguishing features Filled

  • Extent of a surface
  • Square units
  • Measurement conventions vary for buildings and land
  • Technical senses in physics and acoustics

What robots and AI may and may not do Filled

Must not

  • Misstate the area of land, property or rooms in a sale, lease or valuation.
  • Mix units of area without converting them.
  • Present an estimated area as a surveyed one.

Only with a human decision

  • Using a calculated area in a legal document, such as a land title or lease.

May

  • Calculate and report areas with stated units and method.
  • Convert between units of area accurately.

Moral aspects Filled

  • Area figures decide prices, taxes and boundaries, so errors shift money and rights.
  • Overstated floor areas in housing mislead buyers and tenants.

Who is affected

  • Buyers and tenants
  • Landowners

Owners Filled

Steward

Nobody owns the quantity; land surveyors and registries answer for official land areas.

Master systems

  • Land registry or cadastre

Links to other meta-models Filled

parent

  • Q107715 - registry parent class
  • Q123410660 - registry parent class
  • Q1277572 - registry parent class
  • Q181175 - registry parent class
  • Q1991596 - registry parent class
  • Q30337763 - registry parent class

related

  • physical quantity and geometric measure - category
  • square metre - unit
  • polygon and circle - shapes
  • volume - three dimensions

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.area
  • Wikidata: Q11500 (https://www.wikidata.org/wiki/Q11500)
  • SI unit: square metre (m2) unit

Direct properties not applicable Not applicable

  • hectare: 10000 m2 - exact
  • acre: about 4046.86 m2

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Units such as m2, hectare, acre
  • Floor area and land area figures
  • Cross section in physics is measured in barns
  • Not visible itself; the size of a surface.

Capabilities and actions required Filled

  • compute areas of shapes
  • convert area units
  • measure floor or land area
  • use cross sections in physics

Hazards and failure modes required Filled

  • Different floor area definitions
  • Unit conversion errors
  • Map projection distortion of areas

Standards and interfaces required Filled

  • ISO 80000-3
  • Floor area measurement standards such as IPMS
  • Cadastral survey rules

Context of use required Filled

  • Measuring land, floors, surfaces and cross sections.
  • geometric area
  • land and cadastral area
  • floor area
  • surface area
  • cross sections

Sources Filled

  1. Wikidata item Q11500: area - identity and sense of the item
  2. Wikipedia: Area - general description of the item

Open questions

  • Should area kinds be separate entries?
  • How should measurement standards be linked?
  • How should cross sections be split off?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q11500/spec.json