Round 16's partition read every concept whose WHOLE title the question
accounts for before everything the fusion ranked above it. That is a claim
about the covered title's PRECISION, and it overrode the fusion even against
a title answering MORE of the question. Measured on a 26-concept bundle of
five documents: the question names a section by three title tokens and holds
a neighbour's whole one-token title (1 of 9 question tokens); the fusion put
the named section at rank 1, the partition moved the neighbour over it.
A covered concept now RISES through the fusion's order and stops beneath the
first concept whose title answers more question tokens, by equality, than it
holds, or beneath a covered concept the fusion put above it. With nothing
above it answering more it reaches the top exactly as before. Same flag
(--title-covered / --no-title-covered), no new parameter, no new constant.
Measured before this commit, delivered ranks from build_payload:
- known-negative: rank 2 -> 1; the payload equals --no-title-covered's
- three own probes on that bundle: 1, 1, 1 (unchanged from round 16)
- R761 XML, 2 761 concepts: hit@1/8/50 6/6 - 6/6 - 6/6 at default k and at
--k 50, KP rank 1; 8 of 8 payloads byte-identical to 7cca9e0 at BOTH k
- payloads byte-identical to 7cca9e0: K2 pinned 6/6, Arm B 6/6, N100/N200/
N500 15/15; tests/test_default_bundle_pin.py 7 passed, file untouched
- candidates measured beside it: min title length (R761 hit@1 3/6), share of
the question (holds only for 1/9 < s <= 1/6), order inside the group
(group of one: no effect), stop list (no title involved is one)
Suite on the staged set: 1600 passed, 1 skipped.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>