Traversal Stage 2: Scoring Sections
input · Stage-1 output
✓
X100 Manual
✓
Service Guide
section cards
text · tables · figures
every section of the candidates
non-candidates: never opened
score(section, q)
text unit
BM25 ⊕α dense
the Stage-1 blend, reused
0.64
visual emb.
the unit as an image
nearby text
BM25 ⊕α dense on ctx
γ⊕
0.95
0.41
max over units
S_sec = 0.95 ★
the winning unit is called the section's
anchor ★
one decisive hit is enough,
no averaging
S_final = λ·S_doc ⊕ (1−λ)·S_sec
the Stage-1 doc score is fused back in
output · top-K sections
X100 › 5.3 Battery
› table
★
0.95
X100 › 2. Safety
› table
★
(heat caution)
0.62
top-K pass ✓ · K = 2 · each with its anchor ★
X100 › 5.1 Cleaning
0.22
Service Guide › 1. Overview
0.10
final rank = doc score ⊕ section score
→ handed to PACK
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