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

The groupant beside tools/langseg/src/corpus.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:** [`tools/langseg/src/corpus.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/langseg/src/corpus.rs)
- **source SHA-256:** `ab5927cbc959808c…`
- **repository folder:** [`tools/langseg/src/corpus.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/langseg/src/corpus.rs.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` |
| **composition** | partial | [composition](#composition) |
| **cost** | symbolic source derived | [invariant](#invariant) |
| **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) |
| `bracket_horizon` | bracket_horizon | partial source derived model | [bracket_horizon](#bracket-horizon) |
| `licence_routing` | licence_routing | partial source derived model | [licence_routing](#licence-routing) |
| `document_partition` | document_partition | partial source derived model | [document_partition](#document-partition) |
| `partial_ingestion` | partial_ingestion | partial source derived model | [partial_ingestion](#partial-ingestion) |

## Parts

- [langseg-corpus-clean](https://md.groupants.elamur.ai/free/en/mova/tools/langseg/src/corpus.rs.groupant/clean.groupant/)
- [langseg-corpus-talmud-state](https://md.groupants.elamur.ai/free/en/mova/tools/langseg/src/corpus.rs.groupant/talmud-state.groupant/)

## Model text


### descriptant

#### Descriptant

##### Prospective epoch

2026-10-31 source review predicted: Builder::build ingests MACULA, licensed registry routes, then UD; retains first occurrence by (Lang,text). push chunks, assigning ids only to surviving chunks. clean strips tags and references with60-character closer lookahead. split_of uses fnv(doc)%10 except explicit UD split. Talmud state expires after ten subsequent segments. Resource model: Cleaning O(B) with bounded60 lookahead; maps/sets O(E log E) string comparisons/storage. English quota rescans accumulated output per row, potentially O(rows*E). Whole XML file and output retained; allocation and disk errors outside pure domain. External prospective.md predates test additions and preserves APIs, effect order, hazards and interaction hypotheses.

##### Observed epoch

Bounded real helper checks in tests.md constrain these models; syntax is a partial lexical projection with no macro expansion, name resolution or proof. Production expressions unchanged; five inline test modules added. Compiled mutants are temporary and exactly restored. Existing malformed-input and nonfinite domains remain explicit, not silently repaired. Parent composes this scope with siblings without adding overlapping costs twice.

Builder, pool I/O and XML accumulation source-modeled only; no corpus read.

### approximant

#### Forward relation

Builder::build ingests MACULA, licensed registry routes, then UD; retains first occurrence by (Lang,text). push chunks, assigning ids only to surviving chunks. clean strips tags and references with60-character closer lookahead. split_of uses fnv(doc)%10 except explicit UD split. Talmud state expires after ten subsequent segments.

Domain: Chunks require>=3 alphabetic words; max=0 drops every single-word flush. Dedup retains first licence/id, not unique ids. Missing sources often yield empty; XML error yields partial prefix. Registry filtering does not govern earlier MACULA route.

### invariant

#### Invariant and cost

##### Invariant

Chunks require>=3 alphabetic words; max=0 drops every single-word flush. Dedup retains first licence/id, not unique ids. Missing sources often yield empty; XML error yields partial prefix. Registry filtering does not govern earlier MACULA route.

##### Cost

Cleaning O(B) with bounded60 lookahead; maps/sets O(E log E) string comparisons/storage. English quota rescans accumulated output per row, potentially O(rows*E). Whole XML file and output retained; allocation and disk errors outside pure domain.

##### Limits

Builder, pool I/O and XML accumulation source-modeled only; no corpus read. No percentage surrogate is implemented: categorical parsing/effect observations lack an admitted numerical error metric. Any future profile must define its metric/domain and use only1/2/5/10 percent caps.

### composition

#### Local composition

Builder::build ingests MACULA, licensed registry routes, then UD; retains first occurrence by (Lang,text). push chunks, assigning ids only to surviving chunks. clean strips tags and references with60-character closer lookahead. split_of uses fnv(doc)%10 except explicit UD split. Talmud state expires after ten subsequent segments.

Children select narrow source functions with their exact byte intervals. Remaining branches stay in the file model; fragments are not exhaustive partitions. Calls and state joins follow the forward relation, not folder order. Shared scans/helpers are counted once in whole-file costs. Complement of composition is not union of complements; reverse composition retains compatible intermediates and caller premises.

### models

## Typed source-bound relations

Subject: exact source SHA-256 in manifest. Domain and resource premises are in invariant.md. Each model is partial, source-derived, over a single helper invocation or the described finite trace. Complements are proposed inner exclusions under those premises; reverse relations retain all compatible antecedents, with no unique inverse claim. The oracle is the named checks in tests.md; unexecuted cases remain hypotheses. No numerical approximation certificate.

### behavior_complement

Within bounded helper domain, no emitted chunk has<3 alphabetic tokens; exact ud:dev cannot become hash train. Registry scope!=open, NC, unknown and non-JSON rows excluded; separate MACULA path is an explicit exception.

### reverse_reconstruction

Cleaned output admits arbitrary removed tags/references and dropped short chunks. Retained (language,text) admits arbitrary later duplicates. Split admits all corresponding document hash residues, not a unique original.

### bracket_horizon

Matching closer must occur among60 characters from opener; nesting is not balanced. Unmatched opener survives. Boundary helper test checks unmatched removal, not exhaustive horizon cases.

### licence_routing

Admission conjunction precedes route match; MACULA ingestion independently precedes registry. Changing scope removes only that route's additions.

### document_partition

Exact ud:train/dev/test bypass hash. Same document shares split; no statistical independence claim for FNV residues.

### partial_ingestion

read_sefaria read/JSON failure returns empty, MACULA XML failure breaks then consumes collected verses. write_pool truncates before rows and sanitizes text tabs only; no atomicity.

### tests

#### Checks and evidence

Named source/helper checks: corpus::wave31::cleaning_chunk_and_split_boundaries.

Wave31 on2026-10-31:30 distinct exact tests passed twice debug and twice release, with equal sorted named outcomes. This node claims only its listed subset; empty subset means source review only. Six actual source-behavior mutants compiled, failed assertions, restored exact bytes/hash, and passed focused green reruns. No assertion-only mutants; existing swapped-input controls are separate. Receipt bundle: $MOVA_DATA/runs/octopus-wave31-corpus-2026-10-31 (native-commands.json, source-test-map.json, mutation-results.json, *.status/*.log). No live corpus, teacher, frozen assessment, download or production data used.

Builder, pool I/O and XML accumulation source-modeled only; no corpus read.