---
title: "world-mwe-prediction — Mova code model"
description: "Mova code model of world/src/mwe.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/world/src/mwe.rs.groupant/prediction.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-mwe-prediction

The groupant beside world/src/mwe.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_fragment
- **status:** partial source bound model
- **source:** [`world/src/mwe.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/mwe.rs)
- **source SHA-256:** `859883d4e16f6ed8…`
- **covers:** Configuration gates and fixed-lexicon span/pair assembly. (bytes 3380–6363)
- **part of:** [world-mwe](https://md.groupants.elamur.ai/free/en/mova/world/src/mwe.rs.groupant/)
- **repository folder:** [`world/src/mwe.rs.groupant/prediction.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/mwe.rs.groupant/prediction.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 source model | [forward](#forward) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial source model | [composition](#composition) |
| **cost** | partial source model | [cost](#cost) |
| **descriptant** | partial source model | [epoch-memory](#epoch-memory) |
| **invariant** | partial source model | [invariant](#invariant) |
| **tests** | partial source model | [checks](#checks) |

## 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 |
|---|---|---|---|
| `world-mwe-prediction-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `world-mwe-prediction-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `world-mwe-prediction-knob-threshold` | constraint_relation | partial source model | [knob-threshold](#knob-threshold) |
| `world-mwe-prediction-suppression-order` | priority_relation | partial source model | [suppression-order](#suppression-order) |

## Model text


Configuration gates and fixed-lexicon span/pair assembly.

### forward

Contiguous flag activates global form/lemma matching. Accept spans of >=2 with allowed entry kind, a VERB and content count>=min(configured minimum,span length). Arc flag scans retained order: ignore zero, out-of-range and self heads; require obj/compound:prt/iobj plus verbal parent and enabled global idiom category. Sort each two-position pair and suppress it if already contained in an output span.

### invariant

Under aligned arrays and valid global spans, every output has at least two distinct indices and a VERB. Arc output pairs are sorted; global spans retain global ordering. The code assumes aligned public arrays, and cannot certify arbitrary manually malformed Sent values.

### cost

Beyond opaque global matching, O(M*N+N*P*K) conservative scanning bound for M candidate spans and P outputs of size K, plus ordered string lookup costs. Output size and allocation are unbounded by knobs alone.

### composition

The dense head field produced by read_cupt is consumed as h-1. Global filtering occurs before local gates, so rejecting a chosen longest global expression does not recover a suppressed shorter one. Tests cover disabled configuration and invalid-head rejection without activating global dictionaries.

### epoch-memory

2026-10-30 first lexical epoch: old native witnesses returned raw heads [0,10,99], accepted noun-only overlap and duplicate token IDs, and panicked on an out-of-range head. Narrow fixes translate unambiguous IDs, omit invalid/missing arcs, and enforce the documented distinct/shared-verb condition. Prediction-order greedy matching remains intentionally unchanged; historical tuning scores can differ. No corpus retuning or measured speed claim.

### checks

Native filter mwe::wave10_models; see ../evidence.md for fragments or evidence.md at the root. Finite supplied fixtures and independent oracles; no live parser, corpus, teacher or global dictionary activation. Partial syntax has opaque macro bodies and no semantic AST. No executable percentage surrogate or speed claim.

### behavior-complement

Universe: aligned Sent, fixed lexical result and cfg, outputs. Inner absent transitions include arc emitted for zero/out-of-range/self head, nonverbal parent, unsupported relation or disabled category. Unknown lexical entries and contextual idiom senses remain outside the model.

Subject: current source hash and this node's declared scope. Relation describes one terminating call over the finite inputs stated above, with fixed dependencies and successful allocation. Status: partial source-derived model; named native fixtures support only their finite domain. Unobserved effects remain unknown.

### reverse-reconstruction

For a predicted pair retain any valid verbal-head/object-or-particle attachment with an enabled matching idiom category, and any accepted contiguous length-two match yielding that pair. The vector alone does not identify dictionary source or whether an arc was suppressed by a larger span.

Subject: current source hash and this node's declared scope. Relation describes one terminating call over the finite inputs stated above, with fixed dependencies and successful allocation. Status: partial source-derived model; named native fixtures support only their finite domain. Unobserved effects remain unknown.

### knob-threshold

Boolean controls compare >0.5; absent, zero, negative and NaN controls are false. min_content is numeric and capped at candidate span length, so a configured minimum above the length does not forbid that span if every token is content. Knobs() defaults differ from a missing-key cfg.

Subject: current source hash and this node's declared scope. Relation describes one terminating call over the finite inputs stated above, with fixed dependencies and successful allocation. Status: partial source-derived model; named native fixtures support only their finite domain. Unobserved effects remain unknown.

### suppression-order

Arc pair q is appended iff no previous output o contains every q member. Contiguous results are inserted first; later arcs may be blocked by them. This prevents some duplicate pairs but is not a general deduplicated set or maximal matching objective.

Subject: current source hash and this node's declared scope. Relation describes one terminating call over the finite inputs stated above, with fixed dependencies and successful allocation. Status: partial source-derived model; named native fixtures support only their finite domain. Unobserved effects remain unknown.