---
title: "treebanks-release-stats-key — Mova code model"
description: "Mova code model of tools/treebanks/src/release.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/tools/treebanks/src/release.rs.groupant/stats-key.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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# treebanks-release-stats-key

The groupant beside tools/treebanks/src/release.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:** [`tools/treebanks/src/release.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/treebanks/src/release.rs)
- **source SHA-256:** `1289179eb56289fb…`
- **covers:** stats-key (bytes 7567–7661)
- **part of:** [treebanks-release](https://md.groupants.elamur.ai/free/en/mova/tools/treebanks/src/release.rs.groupant/)
- **repository folder:** [`tools/treebanks/src/release.rs.groupant/stats-key.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/treebanks/src/release.rs.groupant/stats-key.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 | `model.md` |
| **ast** | partial | `../syntax.json` |
| **composition** | partial | [Composition](#composition) |
| **cost** | partial | [invariant-and-cost](#invariant-and-cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant-and-cost](#invariant-and-cost) |
| **tests** | 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) |
| `field_order` | field_order | partial source derived model | [field_order](#field-order) |
| `equality_fiber` | equality_fiber | partial source derived model | [equality_fiber](#equality-fiber) |
| `stats_join` | stats_join | partial source derived model | [stats_join](#stats-join) |
| `nonvalidation` | nonvalidation | partial source derived model | [nonvalidation](#nonvalidation) |

## Model text


### descriptant

#### Descriptant

key projects Counts to ordered tuple (sentences,tokens,words,fused), dropping empty.

##### Epoch 2026-10-31

Prospective source reading identified conditional input alignment, information loss and failure order before tests. Existing production code is retained; added tests use actual helpers. Finite results update this source-bound model, not all parser/corpus semantics.

No executable percentage surrogate has a justified observation metric for these categorical/effectful APIs. Future profiles require metric, domain and real-reference evidence at caps 1/2/5/10%; no higher cap. Syntax is partial lexical Rust projection without macro expansion or semantic resolution.

### approximant

## Forward approximant

key projects Counts to ordered tuple (sentences,tokens,words,fused), dropping empty.

### Composition

This fragment is the exact byte-scoped helper identified in the manifest; its relation is restricted to the operations above.

The containing source wires this scoped relation to its callers. Treeagree proposal→gate→commit and treebanks parse→match→collect→render are actual joins; parsecmp is an independent diagnostic path. The external group model distinguishes these tags.

### catalog

## Typed models for treebanks-release-stats-key

Subject: source SHA-256 `1289179eb56289fb511ddca068d7230a21e21abd3d9e1b3e0daf5160de29fb82`; manifest supplies exact source/byte scope. Domain: admitted states in forward model, nonoverflow arithmetic and successful allocations. Observation: one terminating invocation, except explicitly described file trace. Source-derived partial relations; named finite tests constrain selected cases only. Each entry holds arguments and environment fixed except its stated intervention.

### behavior_complement

Two Counts differing only in empty produce identical key; empty-node disagreement cannot be detected by key equality.

Operator: inner exclusion on admitted domain. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### reverse_reconstruction

For tuple (s,t,w,f), compatible Counts have those exact four fields and any u64 empty value.

Operator: compatible antecedent relation, retaining ambiguity. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### field_order

tokens occupies second coordinate and words third; equal cardinality does not make them interchangeable.

Operator: specialized observation relation under the stated fixed inputs. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### equality_fiber

key equality is an equivalence relation with 2^64 possible empty values per unrestricted tuple.

Operator: specialized observation relation under the stated fixed inputs. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### stats_join

check_stats delegates tuple equality for both split and total comparisons; parse_stats sets empty zero.

Operator: specialized observation relation under the stated fixed inputs. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### nonvalidation

Projection does not enforce tokens<=words or any CoNLL-U feasibility condition; malformed tuples remain representable.

Operator: specialized observation relation under the stated fixed inputs. Evidence: source branch derivation plus tests.md; unexercised branches remain hypotheses. Oracle: evaluate the scoped actual helper on admissible fixtures and compare this observation. No universal proof.

### tests

#### Scoped evidence

Parent native slice and exact names are in `../tests.md`.

Archive read helper and real release build are unexecuted; synthetic count/stat checks cover projection, not archive behavior.

This fragment has no independent full-coverage claim. Its byte range and source hash bind the source-derived relation; parent test success is evidence only where that helper is actually reached.

### invariant-and-cost

#### Invariant and cost

Constant four u64 copies, no effects or allocation.

Two Counts differing only in empty produce identical key; empty-node disagreement cannot be detected by key equality.

The complement and specialized catalog constrain preserved coordinates and effect boundaries. Empty/malformed domains are only guaranteed where explicitly admitted. No whole-program cost bound follows from a helper bound.