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mova-nightingale-judge

The groupant beside tools/nightingale/src/judge.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.

Facts

Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.

Components

componentlabelwhere
ApproximantpartialForward approximant
Astpartialsyntax.json
CompositionpartialComposition
CostpartialCost
DescriptantpresentDescriptant
InvariantpartialInvariant
Testsfinite evidenceTests

Obernants

The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.

relationtypelabelwhere
Behavior complementbehavior complementpartial source derived modelBehavior complement
Reverse reconstructionreverse reconstructionpartial source derived modelReverse reconstruction

Model text

Descriptant

Evidence and verdicts of words and phrases against alternatives (shares with the hand list's weights), the dependency method for long phrases, the substitution test and the etymology-free loan signals. Source: tools/nightingale/src/judge.rs.

Forward approximant

evidence: forms -> form or bigram count or chain, variety-shifted; judge: listed loan or alternative -> alternatives, shares, weighted shares, verdict natural/marked/rare/unknown; long phrases with a parser -> weakest dependency pattern; signals: orthography LLR, foreign tag share, English dictionary and frequency, rising trend; candidate at two.

Invariant

A listed loan keeps its raw count and examples (only its weight changes); unknown below min_evidence; a verdict is a function of the counts and the policy.

Cost

O(phrase length) lookups per phrase.

Composition

Parent: nightingale.

Behavior complement

Never bans a word; never asks anyone. Evidence status: source-derived model with finite checks, not a proof.

Reverse reconstruction

The judgement JSON carries every count, share and weight it used.

Tests

Checks

tests/model.rs: collocation, listed loan penalised but retrievable; english.rs frames. These are finite fixtures and measurements; not a proof.

History

2026-11-06 Ā· document

Epoch 2026-11-06

First model, written with the source (the Nightingale: one per language under the Eel; a standard naturalness model with variety deltas).

Provenance

This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/nightingale/src/judge.rs.groupant/