A small typed linguistic layer (FractionOperand, ComparativeOperand,
QuantityReference, ReferenceTarget) replacing the closed-and-deferred
ADR-0137 with a shape-driven design. Justified by the rescan-v3 ledger
showing 7 cases under fraction_operand + compound_comparative that
share a common deep structure (value relative to literal or
prior-sentence anchor) with multiple surface shapes.
Key commitments:
- Three typed phrase structures handle the closed surface set
(frac/percent of X, N times as much/greater than X, frac more/less
than X), where X is either a sentence-internal literal or a
QuantityReference to a prior grounded quantity.
- Binding pass is minimal: sentence-order lookup of QuantityReference
against prior grounded candidates with unique-match gating. No
generic DeferredCandidate apparatus.
- Pinned English convention: "N times greater" = N+1 multiplier
(documented + tested). Other reading requires explicit revisit.
- Supersedes ADR-0137 in scope; the deferral note's reopen criterion
is met by this lighter, more specific design.
- S.1/S.2 short-circuits stay as joins of grounded candidates;
this ADR does not subsume them.
Forcing case for cross-sentence binding: gsm8k-0029 ("three times
greater than the cost of the mouse" + "the mouse cost $16"). Clean,
unambiguous, two-sentence binding.
Self-correction caught before push: gsm8k-0010 was initially framed
as the forcing case, but its expected dataset answer requires a
non-standard English parse of "1/4 more than X" (the natural reading
gives 17; the dataset says 9, requiring X/4 + 7). Per non-negotiable
#2 the binding pass MUST refuse on this; 0010 is reclassified from
"expected admission" to "negative probe." 0029 takes the forcing-case
slot.
Honest expected admission delta: +1 to +2 (0005, 0029 high
confidence; 0041, 0043 partial credit only).
In scope: in the same PR family, fix the issue gsm8k-0029 surfaces by
implementing the binding pass. Out of scope: inverse arithmetic
(0004), multi-term aggregate references (0036), pronoun anchoring,
self-referential cycles.
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