Elamur Groupantsoctopus-english-realizer
The groupant beside tools/octopus/src/realize.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
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 | Forward approximant |
| ast | partial | syntax.json |
| composition | partial | Composition |
| cost | partial | Cost |
| descriptant | present | Descriptant |
| invariant | partial | Invariant |
| tests | finite evidence | 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 |
reverse_reconstruction | reverse_reconstruction | partial source derived model | reverse_reconstruction |
Model text
model
octopus-english-realizer
Descriptant
Small deterministic English realizer for animals' answers: counted nouns, verb agreement, past forms from Mova's morphology, lists and sentences. Source: tools/octopus/src/realize.rs.
Forward approximant
noun(n,l)= l if n==1 else Morph.inflect(l,NNS); noun_count = 'n noun'; be/was/has agree with n; past/participle = Morph.inflect(l,VBD/VBN); list joins with ', ' and ' and '; sentence capitalises the first letter and adds a full stop unless the text ends with . ! ?; could_not(v,o,b) = 'I could not v o because b.'; paragraph joins non-empty sentences.
Invariant
Output states only the caller's values; deterministic; number agreement follows the given count.
Cost
O(output length) plus dictionary lookups.
Composition
Parent: native-octopus-deputy. Pure functions; plural and past forms from en::morph::Morph (built-in dictionary plus suffix rules).
behavior_complement
Not done: articles, irregular plurals absent from the dictionary beyond suffix rules, pronoun choice, tense other than present and simple past, any content selection. Counterexample checked: past('get') = 'got' from the dictionary, not 'getted'. Evidence status: source-derived model with finite checks, not a proof.
reverse_reconstruction
A realized sentence determines the counts and items it names; the function and inputs are recoverable only up to equivalent phrasings (e.g. 0 and 2 both give plurals). No unique inverse is claimed.
Epoch 2026-11-04 (Whales in English)
Epoch 2026-11-04: shared thousands(), utc() and report(Report) for animals' answers (used by the Whales; Sea Spider keeps its own copies).
tests
Checks
Command: cargo test --manifest-path tools/octopus/Cargo.toml --offline --locked with MOVA_OCTOPUS_TEST_MODEL (16 tests including the unchanged native controls; two identical runs on 2026-11-04).
Negative controls 2026-11-04: binding arguments to the first action instead of through the parse, allowing every robots decision, and ordering jobs by arrival only each turn the English tests red; restored afterwards. These are finite fixtures and one live smoke against the project's own site (2026-11-04); not a proof.
2026-11-04: cargo test --manifest-path tools/whale/Cargo.toml --offline --locked with MOVA_OCTOPUS_TEST_MODEL=$MOVA_DATA/download/0/0.4/en.bin (unit tests incl. 5 service tests, 2 realizer tests, 3 length-gate tests; 2 English tests: 18 prompts, 10 refusals, a served end-to-end run with the real mova-whale child and a fake Codex executable; two identical runs on 2026-11-04)
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/octopus/src/realize.rs.groupant/