A Common Frame: Build, Traverse, Pack
① BUILD
give each document a hierarchy (tree)
with headings and summaries
offline · once per corpus
② TRAVERSE
per question, narrow the tree
down to the places worth reading
online · per question
③ PACK
bundle the chosen evidence
to fit the reader budget
budget gauge
→ reader writes the answer
every method that follows =
a different way to fill these three boxes
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