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

The groupant beside world/src/treeread.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/treeread.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/treeread.rs)
- **source SHA-256:** `854e8c3e3a7e1abd…`
- **covers:** treeread::reading; see model.md for exact behavioral scope and external dependencies (bytes 3008–11277)
- **part of:** [world-treeread](https://md.groupants.elamur.ai/free/en/mova/world/src/treeread.rs.groupant/)
- **repository folder:** [`world/src/treeread.rs.groupant/reading.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/treeread.rs.groupant/reading.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-treeread-reading-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `world-treeread-reading-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `world-treeread-reading-boundary` | constraint_relation | partial source model | [boundary](#boundary) |

## Model text


### forward
Scope: kids, verb_of, subject, effect, read and read_sentences. read retains normalization, inclusive punctuation split and parse_words acquisition. Supplied read_sentences accepts ordered Word vectors and question flags. For each admitted integral numeric token, use nummod head as counted noun, climb to verb/root, resolve subject and previous last name, then attach rate/comparison/time/tags. Last PROPN nsubj selection actually uses the first matching subject in the sentence; update after quantities.

### invariant
Within valid-head domain, heads remain one-based and zero means root. verb_of is bounded by sentence length, subject by four conjunction hops. Empty supplied sentences increment sent without generating Q. Tags preserve duplicates/order; they are not a mathematical set. in_q is an observation, not a universal exclusion flag.

### cost
Child enumeration scans all n words. Verb ascent is O(n); tag expansion can nest scans and give O(n^2) per quantity, conservative O(n^3) per sentence plus external parsing. No corpus-speed claim.

### behavior-complement
Without numeric admitted-POS words, no Q is produced. A pronoun in the first sentence cannot recover an unobserved last name from this mechanism. The model does not reject malformed heads safely; out-of-range heads can panic.

### reverse-reconstruction
Q/Ask discard forms, many dependency edges and unselected words. All valid supplied sentence sequences inducing the same ordered observations remain compatible. A holder string may originate from a proper subject, possessive, earlier name or fallback, so it cannot identify one original syntax.

### boundary
Several question sentences can retain earlier Ask fields that are not overwritten; each public punctuation chunk can be a fragment. Correct supplied trees do not establish correctness of parse_words or language normalization.

### composition
Numeric child supplies token values; this child decorates them; schemas uses Q equality, tags and Ask flags. Same original text is passed separately for whole/part cues, so Q/Ask alone are not the complete schema input.

### checks
supplied_trees_preserve_holder_and_question_boundary checks a prior name, later pronoun, nummod unit, equality effect, empty-sentence numbering and question flags. Native tests never acquire an annotator.

### epoch-memory
2026-10-30: extracted private iterator seam without changing public acquisition or iteration order. Full parse quality and malformed graphs remain gaps. Partial syntax only.