A make-target scaffold for pulling public-domain and copyleft-
redistributable textbooks into a dedicated arborist shard via the
existing HtmlPageSource ingest pipeline. No new ingest machinery —
the existing path (robots.txt → noise-strip → 512-token chunk →
Merkle root → audit-event) IS the consistent process.
Manifest format
===============
bench/fixtures/textbooks/manifest-v1.jsonl — one JSON record per
textbook with explicit license tokens (PD / CC-BY / CC-BY-SA /
GFDL / OSI-approved). Fail-closed validation in
bench/scripts/textbooks_manifest.py refuses to emit URLs from
entries with missing or disallowed license tokens, so license
discipline surfaces at the URL-emit step rather than getting
silently buried in a fetch run.
Allow-list excludes CC-BY-NC (incompatible with arborist's
AGPLv3 distribution profile) and CC-BY-ND (no-derivatives
prevents chunking). Wilf's generatingfunctionology stays out
because its educational-use license forbids rehosting; citable
but not redistributable.
Initial entries (7 textbooks, 8 seed URLs)
==========================================
- Bogart, Combinatorics Through Guided Discovery — GFDL-1.3
- Keller & Trotter, Applied Combinatorics — CC-BY-SA-4.0
- Levin, Discrete Mathematics: An Open Introduction (3rd ed) —
CC-BY-SA-4.0 (4th ed switched to NC; pin 3rd)
- Hilbert, Foundations of Geometry (Townsend 1902) — PD via PG
- Boole, An Investigation of the Laws of Thought (1854) — PD
- Aristotle, Prior Analytics (Jenkinson) — PD via Wikisource
- Morin, Open Data Structures — CC-BY-2.5
Covers pillars I (logic) / II (set theory) / III (arithmetic) /
IV (geometry) / VII (combinatorics) on the claim-pack
(#000029) layout, plus a CS anchor for downstream domain
expansion. Each entry's pillar_targets field lists which
claim-pack pillars its records are candidate citations for.
Make targets
============
- textbooks-summary — license + URL counts per entry
- textbooks-urls — flat URL list to stdout
- fetch-textbooks — ingest all manifested URLs into
$(TEXTBOOK_DB) (default
~/.arborist/textbooks.db)
- textbooks-stats — documents / chunks / edges
- textbooks-verify — sample Merkle proof verification
To grow coverage of one textbook: append more chapter URLs to
its `urls` array. For deep-BFS of a textbook home: use the
existing `make crawl-ingest URL=<base> DEPTH=N` instead.
Smoke-tested end-to-end against Wikisource Prior Analytics:
1 doc / 1 chunk / 12 outbound edges / Merkle proof passes.
Shows the pipeline works; populating each book to depth needs
either more URLs in the manifest or the crawler.
Out of scope
============
- PDF processing. The Internet Archive hosts PD textbooks
(MacMahon's Combinatory Analysis 1915, Whitworth's Choice
and Chance 1867, the Motte 1729 Principia) as scanned PDFs;
a TextbookPdfSource with pdftotext / pypdf extraction is a
separate ticket — current scope is HTML-shaped sources.
- Mendelson + Enderton (proprietary; await #000031 §2.1
decision).
- Wilf generatingfunctionology (license forbids redistribution).
Test suite stays at 1554 passed / 28 skipped — no source-code
changes to arborist itself; the textbook layer is pure tooling
on top of the existing pipeline.
russell@unturf.com
4a199c9dad