world-reader-candidate
The groupant beside world/src/reader.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 |
|---|---|---|---|
world-reader-candidate-behavior-complement | behavior_complement | partial source model | behavior-complement |
world-reader-candidate-reverse-reconstruction | reverse_reconstruction | partial source model | reverse-reconstruction |
world-reader-candidate-boundary | constraint_relation | partial source model | boundary |
Model text
forward
Scope: state_answer. Empty index yields None. Resolve main subject in characters, then objects/places; resolve others excluding subject. An accepted subordinate anchor needs score>=4 and predicate or at least one word. Dispatch on QKind to branch-specific searches, field/cause fallbacks and confidence adjustments. Num selects the first matching numeric attribute with confidence eight; Happen with an unresolved supplied subordinate refuses to guess.
invariant
Candidate facts come from ix; rendered entities/events come from fw. This shared identity assumption is required externally. Branches preserve fact iteration order where they use first/last rather than explicit ranking. Candidate slot is normalized by Tale::cand outside this range.
cost
Entity resolution, index scoring/ranking and rendering are external; repeated scans can visit F facts several times. Conservative source model O(F K W L) plus sorting and entity work, no measured bound.
behavior-complement
Empty index cannot produce a candidate. Happen with a subordinate and no accepted anchor cannot select a later event through this branch. These exclusions do not prevent semantically spurious causes or entity resolution.
reverse-reconstruction
A candidate retains slot, sentence, score, span kind, predicates and a label; multiple QKinds and worlds can render identical values. Reconstruct all routes compatible with the observed tuple and fixed dependency outputs; do not infer a unique event from rendered text.
boundary
Temporal slack and fixed scores are heuristics. Sentence arithmetic assumes ordinary bounded story lengths; overflow near u16 limits is untested. The anchor fact may be from a shuffled world by caller design.
composition
Consumes lexical projection, qframe roles and index/world identity. Produces a Cand consumed by arbitration; locally confident selection does not establish final answer quality or a valid own-text join.
checks
Confidence and section-envelope native tests constrain helper assumptions; complete branch execution remains a gap. Catalog statements here are source inspection, not a claim that all routing arms have test coverage.
epoch-memory
2026-10-30: preserve branch-specific temporal behavior and unknown parser/entity quality. Partial syntax is available; semantic interpretation is not mechanically certified.
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