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Research draft

proportionality

vr.tr.proportionality · XCT.REL

Let an agent handle proportionality in mathematics, science and allocation, stating the constant and the conditions.

Thing Registry Cross-cutting context

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent handle proportionality in mathematics, science and allocation, stating the constant and the conditions.

A relationship between two quantities in which their ratio (direct proportionality) or product (inverse proportionality) is constant; also the principle of proportional allocation, such as in electoral systems.

What it is for: Scaling, modelling and fair allocation.

It can be identify it from data; compute the constant; use it to scale; measure proportionality of allocations.

Distinguishing features

Constant ratio or product

Direct and inverse forms

Linear is not always proportional (offset)

Degressive proportionality in allocation

What it looks like

Straight lines through the origin, formulas y = kx or y = k/x.

How it is recognised

Constant ratio or product

Linear graph through origin

Electoral indices such as Loosemore-Hanby

Related models

is a kind of - dependency

mathematical relation

uses - constant

ratio

is applied in - allocation

electoral unit and voting

is confused with - offset allowed

linear relationship

In practice

Families and kinds

direct proportionality

inverse proportionality

proportional representation

degressive proportionality

Standards and regulation

Electoral laws on seat allocation

Proportionality principle in law (legal sense)

Failure modes and hazards

Assuming proportionality without evidence

Extrapolating beyond valid range

Also called

inverse proportionalitydirect proportionalityLoosemore–Hanby indexdegressive proportionality

Where this came from

wikidata · CC0 1.0

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Relation Which form.

Form decides the formula.

Form

Direct or inverse.

Form

Form of proportionality.

  1. Is it direct or inverse proportionality? definition
  2. What is the constant? measurement

Validity

Range.

Validity

Validity range.

  1. Over what range does it hold? boundary
  2. What evidence shows it? provenance
Use Scaling.

Proportions scale quantities.

Scaling

Calculations.

Scaling

Scaling.

  1. How is it used to scale values? action
  2. What errors can occur? boundary

Data

Testing.

Data test

Testing in data.

  1. Does the data support proportionality? measurement
  2. Is there an intercept? boundary
Allocation Fair shares.

Proportionality in allocation.

Electoral

Seats and votes.

Electoral

Electoral proportionality.

  1. How proportional is this seat allocation? measurement
  2. By which index? provenance

Degressive

Adjusted shares.

Degressive

Degressive proportionality.

  1. Is allocation degressively proportional, and why? definition
  2. Which rule sets it? provenance
Law Legal principle.

Proportionality is also a legal test.

Legal test

Rights limits.

Legal test

Legal proportionality.

  1. Is a legal proportionality test meant? boundary
  2. Which court applies it? provenance

Disambiguation

Senses.

Disambiguation

Sense.

  1. Which sense of proportionality is meant? boundary
  2. Is there a better entry? action

What the second pass must settle

  • Should the legal proportionality principle be a separate entry?
  • How should allocation indices be linked?
  • How should agents test proportionality in data?