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

The groupant beside gparse/src/model.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:** [`gparse/src/model.rs`](https://github.com/ElamurAI/mova-free/blob/main/gparse/src/model.rs)
- **source SHA-256:** `a380c81aa11433fd…`
- **covers:** GELU chooses erf/tanh; config serialization records fields, parse starts default and processes ordered key=value lines. (bytes 907–3179)
- **part of:** [gparse-model](https://md.groupants.elamur.ai/free/en/mova/gparse/src/model.rs.groupant/)
- **repository folder:** [`gparse/src/model.rs.groupant/configuration.groupant`](https://github.com/ElamurAI/mova-free/tree/main/gparse/src/model.rs.groupant/configuration.groupant)
- **repository commit:** `48f2e6f74146`

> **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` |
| **cost** | symbolic source derived | [invariant](#invariant) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant](#invariant) |
| **tests** | partial 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) |
| `numeric_failure` | numeric_failure | partial source derived model | [numeric_failure](#numeric-failure) |
| `text_projection` | text_projection | partial source derived model | [text_projection](#text-projection) |
| `activation_choice` | activation_choice | partial source derived model | [activation_choice](#activation-choice) |
| `roundtrip_domain` | roundtrip_domain | partial source derived model | [roundtrip_domain](#roundtrip-domain) |

## Model text


### descriptant

#### Source-bound description

GELU chooses erf/tanh; config serialization records fields, parse starts default and processes ordered key=value lines.

##### Epoch 2026-10-31

Prospective model was recorded before edits. Added tests use bounded synthetic fixtures; production algorithms unchanged. Coverage is partial, not proof. No trained corpus, live teacher or throughput experiment was executed.

##### Epoch 2026-11-04

ngram joins the fields: written only when positive, parsed with an error on a malformed value (unlike the other numeric fields, which keep their default).

### approximant

#### Forward approximant

GELU chooses erf/tanh; config serialization records fields, parse starts default and processes ordered key=value lines.

Domain: valid source-specific dimensions and resources stated in invariant; no automatic production substitution. Numerical observations are finite checks, not an end-to-end relative bound. Executable Rust surrogate: unsupported gap; existing exact tests are not surrogates. Future metric-specific caps may be 1/2/5/10%, never above 10%.

### invariant

#### Invariant and cost

Bad numerics retain current field; unknown GELU errors; duplicate valid fields last win.

##### Cost

O(config bytes), constant field state.

Allocation, finite arithmetic, platform dimensions and external failures are not universally certified.

### models

## Typed model catalog

### behavior_complement

Unsupported saved GELU cannot be repaired by later line because parsing aborts.

### reverse_reconstruction

Many unknown-key/invalid-number texts map to the same cfg; saved form is canonical but not source-text inverse.

### numeric_failure

parse failure retains current field, so invalid later repeated number keeps earlier successful value.

### text_projection

Unknown keys and lines without '=' ignored; whitespace not trimmed.

### activation_choice

Erf calls gelu_erf, Tanh calls gelu.

### roundtrip_domain

Finite ordinary numeric fields serialize and parse; config does not enforce heads/divisibility/dropout validity.

### tests

#### Checks and limits

Selected parent checks relevant to this fragment (not exhaustive): model::tests::embeddings_get_gradients; model::fused::which_ops_backprop; activation_configuration_roundtrips; CUDA gradient/GELU/synthetic optimizer checks; CPU prediction

Selected commands run twice debug and twice release; exact receipts and source-to-test mapping retained in wave30 gparse external run directory. Tests do not certify allocation failure, all NaN/overflow inputs, trained-model accuracy or corpus timing. Compiled mutants cover selected boundaries; per-source coverage is recorded in the external map, not presumed.