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Published

rate

vr.tr.rate-q1144560 · thing-q1144560

Let an agent handle rates with numerator, denominator, units and conditions, and not confuse rates with ratios or totals.

Thing Registry Cross-cutting context XCT.TME
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

Definition Which rate.

Terms

Numerator and denominator.

Terms

Rate definition.

  1. What is changing, per what? definition
  2. Over what period? definition

Units

Per-units.

Units

Units.

  1. In which units is the rate given? definition
  2. How does it convert? measurement
Measurement How measured.

Method

Instrument or data.

Method

Measurement.

  1. How was the rate measured or calculated? provenance
  2. How uncertain? measurement

Conditions

Context.

Conditions

Conditions.

  1. Under which conditions? definition
  2. Is it steady or varying? measurement
Comparison Comparing rates.

Basis

Same definitions.

Basis

Comparison basis.

  1. Are the rates defined the same way? boundary
  2. Are populations standardised? boundary

Trends

Change over time.

Trends

Trends.

  1. How has the rate changed? measurement
  2. Is the change significant? measurement
Use In decisions.

Decision

Thresholds.

Decision

Decision rules.

  1. Which thresholds apply? provenance
  2. What action follows? action

Communication

Clarity.

Communication

Clear presentation.

  1. Is the rate presented with its denominator? boundary
  2. Would absolute numbers help? action

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.TME
Other names and narrower kinds
flow rate, deformation rate, nucleation rate, rainfall intensity, flux density, strain rate tensor, number flow rate, daily rainfall, hourly rainfall, monthly rainfall, symbol rate, throughput

What it is Filled

A quantity expressing how one quantity changes relative to another, usually per unit time, such as flow rate, strain rate, rainfall intensity or nucleation rate.

Why it exists Filled

Let an agent handle rates with numerator, denominator, units and conditions, and not confuse rates with ratios or totals.

Distinguishing features Filled

  • Change of one quantity per another
  • Usually per unit time
  • Different from a total or a ratio of like quantities
  • Population rates need a denominator

What robots and AI may and may not do Filled

Must not

  • Report a rate without its unit or time base.
  • Compare rates with different bases as if they were the same.
  • Exceed safe rates, such as of flow or infusion, set for a system.

Only with a human decision

  • Changing the rate of a process people's safety depends on, such as a drug infusion or dam release.

May

  • Calculate and report rates with their units and time base.
  • Monitor flow, strain or other rates in systems it is authorized to manage.

Moral aspects Filled

  • Misread rates mislead decisions in medicine, engineering and policy.
  • Statistics about rates of crime or disease can stigmatise groups when presented without context.

Who is affected

  • People relying on the figures
  • Groups described by statistics

Owners Filled

Steward

Nobody: a mathematical concept.

Links to other meta-models Filled

parent

  • Q141256417 - registry parent class
  • Q2091629 - registry parent class
  • Q3481047 - registry parent class

related

  • ratio - quotient
  • time - per unit time
  • total - amount
  • measurement - quantification

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.rate-q1144560
  • Wikidata: Q1144560 (https://www.wikidata.org/wiki/Q1144560)

Direct properties not applicable Not applicable

Not applicable

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Units with per
  • Named rates such as flow rate or incidence rate
  • Rates in statistics per population
  • Numbers with per-units such as per second or per 100000 people.

Capabilities and actions required Filled

  • measure and compute it
  • convert units
  • compare rates
  • use it in models

Hazards and failure modes required Filled

  • Missing denominators
  • Comparing rates with different bases
  • Unit errors

Standards and interfaces required Filled

  • ISO 80000 quantities
  • Statistical standards for rates

Context of use required Filled

  • Describing change and flow in science, engineering, economics and health.
  • physical rates: flow, strain, reaction
  • statistical rates: incidence, mortality
  • financial rates: interest, exchange
  • rainfall intensity

Sources Filled

  1. Wikidata item Q1144560: rate - identity and sense of the item
  2. Wikipedia: Rate (mathematics) - general description of the item

Open questions

  • Should rate types be separate entries?
  • How should denominators be recorded?
  • How should population rates be standardised?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q1144560/spec.json