Elamur Groupantsonto-model
The groupant beside onto/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
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 |
| composition | partial | composition |
| cost | partial | Cost |
| descriptant | present | descriptant |
| invariant | partial | model.md |
| tests | executed bounded checks | 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 |
pos_quotient | pos_quotient | partial source derived model | pos_quotient |
csr_units | csr_units | partial source derived model | csr_units |
lookup_order | lookup_order | partial source derived model | lookup_order |
role_bits | role_bits | partial source derived model | role_bits |
Parts
Model text
descriptant
onto-model
Public SoA/CSR graph accesses off[i]..off[i+1]; binary word search needs sorted dictionary; LU lookup uses two word partition points. find_synset returns first matching OEWN key/POS. Enum byte decoders return None outside table.
Epoch 2026-10-31
Prospective review preceded inline test edits. Tests used bounded synthetic CPU fixtures only. Offsets/dimensions/UTF8 boundaries and IDs assumed valid via external store::check; public mutation can violate them. Default graph has zero words/concepts; n_words saturating subtraction.
No production optimization, live teacher, corpus, assessment or database mutation. Registry presence denotes partial modeling; syntax is lexical and generated twice identically.
approximant
Forward model: onto-model
Public SoA/CSR graph accesses off[i]..off[i+1]; binary word search needs sorted dictionary; LU lookup uses two word partition points. find_synset returns first matching OEWN key/POS. Enum byte decoders return None outside table.
Domain
Finite input arrays/text with resource availability and the source-specific bounds and representation assumptions in invariant.md. Exact categorical semantics; no executable percent surrogate is supplied. 1/2/5/10% caps need a meaningful metric and are not claimed.
Relations
word(w)=words[word_off[w]..word_off[w+1]]; out(c)=out[out_off[c]..out_off[c+1]], analogously in/members/senses. word_id(s)=binary_search_W(s). find_synset(s)=min{i:srcᵢ=Oewn∧keyᵢ=parse_key(s)∧posᵢ=parse_pos(s)}, if any.
invariant
Invariant and cost
Offsets/dimensions/UTF8 boundaries and IDs assumed valid via external store::check; public mutation can violate them. Default graph has zero words/concepts; n_words saturating subtraction.
Cost
Slices O(1), word lookup O(log W) string comparisons, LU lookup O(log L), synset O(C); rendering allocates; no validation cost inside accessors.
No allocation, integer-overflow, malformed public-state or external-effect guarantee beyond explicitly described branches.
composition
Composition
Builder constructs graph arrays, store validates/deserializes; Kb/query rely on sorted words/valid CSR. Core SynMap last duplicate differs from linear find first duplicate.
Child fragments specialize concrete byte scopes and share the parent syntax projection; they do not duplicate whole-file guarantees. No composition-wide approximation error budget is established.
models
Typed obernant catalog
Partial source-derived relations, not proofs. Complement excludes incompatible observations; reverse describes compatible antecedents.
behavior_complement
Invalid enum byte cannot decode. word_id performs no case/plural normalization; malformed CSR may panic instead of Err.
reverse_reconstruction
Lookup result constrains observed dictionary location only; unobserved arrays arbitrary. cid_str is not unique for duplicate keys; first matching Cid chosen.
pos_quotient
Adj/Sat share word class symmetrically but distinct bytes/letters; Frame/Role lack from_wn input.
csr_units
String offsets count UTF8 bytes; membership/senses/edges offsets count elements.
lookup_order
word_id assumes lexical string order; lus_of requires nondecreasing Wid and returns all equal-word LUs.
role_bits
Src::Role decodes bits1..2 as Core; bit0 independent FLAG_PLUS; all four combinations valid.
tests
Evidence, 2026-10-31
Selected command: cargo test --offline --locked -p onto --bin onto -- --exact --test-threads=1 model::wave29::representation_and_lookup_boundaries
Named outcomes:
- model::wave29::representation_and_lookup_boundaries
Two debug and two release/optimized executions returned zero and identical sorted nonempty named outcomes. Source-generated syntax pairs matched byte-for-byte. 1 compiled source mutation rejected by named test, exact source restored and positive rerun succeeded.
- Control: "self.word(mid as Wid).cmp(s) -> s.cmp(self.word(mid as Wid))" → "model::wave29::representation_and_lookup_boundaries" (exit 101).
Finite synthetic examples only. Full ingestion, live workers, real corpus, allocation/I/O fault injection, GPU and full-school behavior remain unexecuted. No universal or executable-approximant assurance. External receipts: octopus-wave29-ontocore-2026-10-31 (native-commands.json, source-test-map.json, outcomes.json, controls.json and numeric exit/log files).
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/onto/src/model.rs.groupant/