---
title: "world-know — Mova code model"
description: "Mova code model of world/src/know.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/world/src/know.rs.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

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# world-know

The groupant beside world/src/know.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

- **kind:** groupant
- **status:** partial source bound model
- **source:** [`world/src/know.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/know.rs)
- **source SHA-256:** `6e24c7d3793f5e08…`
- **repository folder:** [`world/src/know.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/know.rs.groupant)
- **repository commit:** `855da7bd4a7b`

> **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

| component | label | where |
|---|---|---|
| **approximant** | partial | [approximant](#approximant) |
| **ast** | partial | `syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | partial | [cost](#cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant](#invariant) |
| **tests** | executed bounded checks | [tests](#tests) |

## 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.

| id | type | label | where |
|---|---|---|---|
| `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `world_know_invariants` | world_know_invariants | partial source derived model | [world_know_invariants](#world-know-invariants) |
| `world_know_resource_cost` | world_know_resource_cost | partial source derived model | [world_know_resource_cost](#world-know-resource-cost) |
| `world_know_representation_join` | world_know_representation_join | partial source derived model | [world_know_representation_join](#world-know-representation-join) |
| `world_know_domain_partition` | world_know_domain_partition | partial source derived model | [world_know_domain_partition](#world-know-domain-partition) |

## Parts

- [world-know-rule-language](https://md.groupants.elamur.ai/free/en/mova/world/src/know.rs.groupant/rule-language.groupant/)
- [world-know-derivation](https://md.groupants.elamur.ai/free/en/mova/world/src/know.rs.groupant/derivation.groupant/)

## Model text


### descriptant

#### world-know

KnowRules::from_english overlays defaults linewise, filters invalid numeric weights. Knowledge indexes extracted facts after kind remapping and derive(original). about exact lowercase subject wins, else head-word fallback. order uses13weights iff length13: score=sum(features*w), descending then source byte length/lex; otherwise link/definition/opening/length/lex. Learn audits verb mappings before ideas; new idea needs gd>0,gg>0 and controls nonincreasing.

##### Modeling epoch 2026-10-31

Prospective source/branch/cost hypotheses were saved externally before source edits. This partial source-derived model retains observed boundaries rather than claiming complete verification. Serialization/rank fallback/derivation/inheritance runtime evidence only; extraction/questions/cache/learning effects partial. No general logic truth proof or surrogate.

### approximant

#### Forward relation

KnowRules::from_english overlays defaults linewise, filters invalid numeric weights. Knowledge indexes extracted facts after kind remapping and derive(original). about exact lowercase subject wins, else head-word fallback. order uses13weights iff length13: score=sum(features*w), descending then source byte length/lex; otherwise link/definition/opening/length/lex. Learn audits verb mappings before ideas; new idea needs gd>0,gg>0 and controls nonincreasing.

Domain: Synthetic Fact/KnowRules tests only, no annotator/manual/qa corpus/current state/train calls. Finite UTF-8 and representable arithmetic.

No executable percent surrogate: these categorical/effect observations lack a useful approximation metric. Future supported caps1/2/5/10% need a defined domain/metric and real reference evidence; no error or speed bound is claimed.

### invariant

BTree and explicit ties deterministic. CountIn unit subject/holder object, show ignores negation/frequency. derive instrument branch filters !negated but not Often::Never. Cache one Arc keyed exact rules, rebuilt under lock. Prepared lookup does not validate current stamp.

Cost component: [cost.md](https://md.groupants.elamur.ai/free/en/mova/world/src/know.rs.groupant/#cost).

### cost

Fact index O(F log S); derivation indices and kind scans, up to12 per accepted definition (not global subject cap). Rank O(F log F*13); i64 score multiplication/sum unchecked. Parsing and learning delegated and unmeasured.

### composition

family stores English brain section and consumes knowledge answers; worldbook perception classifies missed sentences via facts. anticipate_if_stale stamps rules+code but prepared reads current file without revalidation.

### models

### behavior_complement

Exact subject never augments fallback head matches. Missing English fields leave defaults. Bad weight length bypasses learned scoring. Inherit does not recursively consume output; kind needs3 eligible Has/Can, own verb blocks inherited ability. right_answer unknown/yes can be true; check_half owns answered filtering.

### reverse_reconstruction

Valid generated English reverses clean rule fields, but arbitrary ignored prose shares defaults. Same answer admits all lower-ranked and unrelated facts. Derived cannot preimage includes matching negativeHas instrument/action pairs; duplicate premises and irrelevant facts unrecoverable.

### world_know_invariants

BTree and explicit ties deterministic. CountIn unit subject/holder object, show ignores negation/frequency. derive instrument branch filters !negated but not Often::Never. Cache one Arc keyed exact rules, rebuilt under lock. Prepared lookup does not validate current stamp.

### world_know_resource_cost

Fact index O(F log S); derivation indices and kind scans, up to12 per accepted definition (not global subject cap). Rank O(F log F*13); i64 score multiplication/sum unchecked. Parsing and learning delegated and unmeasured.

### world_know_representation_join

family stores English brain section and consumes knowledge answers; worldbook perception classifies missed sentences via facts. anticipate_if_stale stamps rules+code but prepared reads current file without revalidation.

### world_know_domain_partition

Synthetic Fact/KnowRules tests only, no annotator/manual/qa corpus/current state/train calls. Finite UTF-8 and representable arithmetic.

### tests

#### Finite actual-code evidence — 2026-10-31

Names: ["know::wave29_worldlearn::derivation_requires_missing_instrument_and_deduplicates", "know::wave29_worldlearn::english_defaults_and_malformed_weights_fallback", "know::wave29_worldlearn::inheritance_threshold_and_own_verb_override"]

Selected CPU command: CARGO_BUILD_JOBS=2 CARGO_TARGET_DIR=ISOLATED_TARGET cargo test --offline --locked -p world --lib --example retention_probe [--release] wave29_worldlearn -- --test-threads=1

15 selected cases passed twice debug and twice release with identical sorted names/outcomes, exits0. control-know: compiled source mutation failed with exit101; source restored byte-for-byte and15positive tests passed. No live teacher, corpus, state activation, GPU, or full-school run. Temporary synthetic files use unique process-id paths and are removed after passing tests.

Serialization/rank fallback/derivation/inheritance runtime evidence only; extraction/questions/cache/learning effects partial. No general logic truth proof or surrogate.

Source SHA256: 6e24c7d3793f5e08860e5549345b328dfa3916c89259520194cf95ba5166417e. Syntax generated independently twice and compared; lexical only, no semantic proof or CUDA compilation. Strict whole-crate Clippy was not repeated merely to reproduce existing dependency/source lints; Cargo warnings retained in receipts.