Elamur Groupantsprag-rules-sites
The groupant beside prag/src/rules.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 source model | forward |
| ast | partial | ../syntax.json |
| composition | partial source model | composition |
| cost | partial source model | cost |
| descriptant | partial source model | epoch-memory |
| invariant | partial source model | invariant |
| tests | partial source model | 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 |
|---|---|---|---|
prag-rules-sites-behavior-complement | behavior_complement | partial source model | behavior-complement |
prag-rules-sites-reverse-reconstruction | reverse_reconstruction | partial source model | reverse-reconstruction |
prag-rules-sites-specialization | coordinate_projection | partial source model | specialization |
Model text
forward
sites emits frames first, then eligible coreference pronouns in frame/slot order (agent,patient,recipient,place,obliques), then unframed VBG/VBN amod/acl tokens on noun/proper-noun heads. frame_at maps predicate pairs to last index except sentinel; head_frame follows bounded ancestry. real excludes unresolved/personal IDs.
invariant
Coordinates are not entity identities. Pron recognition lowercases surface pron; resolved entities remain eligible. Token/ancestry branches assume valid supplied trees. Public atoms/drop_frames retain stronger caller preconditions than apply_at.
cost
O(F+O+T+F log F) scan, O(S+F) space, O=oblique count. head_frame at most T steps with O(log F) map lookup.
behavior-complement
For three frames with She in frame2 patient and first oblique, only [Frame0,Frame1,Frame2,Ent(2,1),Ent(2,4)] is permitted in candidate sequence universe. Absent slots cannot produce pronoun sites. Token complement is source-derived only.
reverse-reconstruction
Same sites permit many entity IDs, texts and frame kinds; pronoun coordinate does not recover antecedent. Empty sites constrains no frames/qualifying tokens, not necessarily an empty tree list.
specialization
actions_for restricts by site class; direct apply_at now rejects invalid coordinates before cloning. Token site creation is not executed.
composition
Codec feeds selection without reordering. Sites and action-dependent atoms share the pre-rule Read; ordered action fold sees evolving state, then deletion remaps coordinates. Selection nested in codec retains status distinctions. Exact byte scopes constrain composition; no child alone proves the parent.
checks
Ten rules::wave15_models tests, tiny supplied fixtures only; two debug and two release passes with identical named outcomes. File-root receipts.md retains hashes. Finite catalogs, nine transfer states and sixteen deletion subsets; compiled production vacancy-guard mutant fails finite_transfer_and_drop_relations.
epoch-memory
2026-10-30: first rules tree. Review predicted unchanged valid-site transitions and O(1) validation before O(Read bytes) cloning. Old invalid_direct_sites_are_no_change failed because absent Drop returned Some; seven other initial tests passed. Repair rejects absent coordinates/unaligned reads. select_rules exposes the existing production filter; no selection policy change or speedup claimed.
limitations
Partial syntax, no expanded macros or semantic AST proof. No live parser, teacher, corpus, environment mutation, override or cache acquisition in tests. Empty verbs/entities avoid lexical matching acquisition; populated entity tests use direct actions. Token creation, full lexical/ancestry/action branches, IO/cache lifetime and all multi-site interactions remain unexecuted. Public atoms/drop_frames still require valid coordinates/alignment.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/prag/src/rules.rs.groupant/sites.groupant/