Elamur Groupantscycle-pipeline-cascade
The groupant beside tools/cycle/src/pipeline.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 | approximant |
| ast | partial | ../syntax.json |
| cost | partial | invariant-and-cost |
| descriptant | present | descriptant |
| invariant | partial | invariant-and-cost |
| tests | bounded or representation | 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 |
hard_quota | hard_quota | partial source derived model | hard_quota |
zip_loss | zip_loss | partial source derived model | zip_loss |
hash_ties | hash_ties | partial source derived model | hash_ties |
output_order | output_order | partial source derived model | output_order |
Model text
descriptant
cycle-pipeline-cascade
Epoch 2026-10-31
Prospective inspection identified this relation before additions: Compare zipped head/relation rows by id; choose at most floor(n/2) positive-change blocks ordered by descending count then seeded FNV hash; fill from remaining hash-ranked blocks; restore original index order.
The production implementation is unchanged; only selected inline tests are appended. Source-bound syntax is generated twice and compared. Native checks exercise bounded helpers; entry orchestration, teacher calls, models and corpora remain source-derived. Partial syntax is not semantic proof. Preserve failure prefixes and ambiguity when refining this model.
approximant
Forward relation
Compare zipped head/relation rows by id; choose at most floor(n/2) positive-change blocks ordered by descending count then seeded FNV hash; fill from remaining hash-ranked blocks; restore original index order.
Composition
This fragment isolates the stated helper relation; parent composition retains surrounding effects and failures.
catalog
Typed observations: cycle-pipeline-cascade
Subject: tools/cycle/src/pipeline.rs, SHA-256 f631f3949f282bea361d58e43e092b1c323b1ec697ce7ad871c3dfcbbf05f336. Domain: bounded source inputs, declared filesystem/environment state and normal allocations. Each view is a partial source-derived relation, not a universal proof. Observation is one helper call or the explicitly described trace. Checks are in tests.md; unexecuted effects remain gaps.
behavior_complement
n=0 yields no block; n≥N yields original recognized-id blocks in input order. A selected index cannot repeat.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
reverse_reconstruction
Selected block sequence admits arbitrary omitted blocks and compatible change/hash rankings. No unique draft or seed recovery; hash collisions preserve ambiguity.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
hard_quota
Only positive changes qualify for initial n/2. Fewer hard blocks shift remaining quota to hash sample.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
zip_loss
Missing draft id has zero changes; extra rows past zip length are ignored, so differing lengths need not rank hard.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
hash_ties
Wrapping FNV seeded with k gives deterministic scores; stable sorts preserve index order on exact equal keys. This is not uniform statistical sampling proof.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
output_order
Final numeric index sort restores below-file order regardless of selection rank; reverse relation must preserve this subsequence constraint.
Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.
tests
Checks and limits
pipeline::wave33_tests::cascade_count_order_and_zero covers zero/oversize, hard inclusion, order and determinism.
Exact native outcomes and command metadata are retained in the external wave33 cycle receipt bundle. Selected names run twice in debug and release; syntax is independently regenerated twice. Compiled mutations and source restoration receipts distinguish behavior changes from assertion-only controls. These claims are finalized in evidence.md. No live teacher, real model/corpus, benchmark CLI or lesson-learning CLI is run.
invariant-and-cost
Invariant and cost
Output contains min(n,N) input blocks, subject to allocation/usize feasibility; identity is block index, not unique id. Unmatched row suffixes do not count changed.
For B input bytes and maximum sentence-id length L_id, O(B+N log(N+1)*(1+L_id)+N min(n,N)): sort_by_key recomputes the id hash, and rest membership uses linear out.contains. IDs are not assumed to have unit byte length.
No executable percentage surrogate is claimed: effects, categorical acceptance and report text have no justified approximate metric here. Future profiles require a useful metric, zero case, reference and evidence at caps 1/2/5/10%.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/cycle/src/pipeline.rs.groupant/cascade.groupant/