Add crossref.fetch_references(doi), which parses message.reference[].DOI into Citations (DOI-less book/unstructured refs are skipped — they cannot join the graph). Wire it as the third leg of the ingest citation fallback chain: OpenAlex-empty -> S2 -> Crossref, for DOI papers only (Crossref's works endpoint is DOI-keyed). Cited DOIs are normalized to the canonical bare lower-case form via _norm_cited_id.
As a fallback it fires only when OpenAlex and S2 both return no references, so it adds a forward-looking third source without changing the already-covered corpus.
Tests: fetch_references unit tests (DOI edges / unstructured skipped / no refs / 404) and ingest tests for both fallback directions. Full suite 361 passed; ruff + mypy clean. Live-validated: 33/40/24 refs for Springer/ACM/Wiley DOIs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Enable roadmap R-A (GROBID reference extraction) end-to-end and run it
against local Jetson infra instead of a Mac/Rosetta emulation.
Backfill:
- Add scripts/ra_grobid_backfill.py: references-only, idempotent citation
backfill (dry-run default). Deliberately not ingest_paper(source_path=pdf),
which re-OCRs and replaces the DQ-3-clean .txt chunks; this touches only the
citations table (ON CONFLICT DO NOTHING). 7 tests.
- Make extract_references timeout configurable (large theses exceed the 60s
default, especially against a slower GROBID).
Jetson infra:
- Bump grobid/grobid 0.8.2 -> 0.9.0-crf. The -crf tag is the only GROBID
variant published as an arm64 multi-arch manifest; every 0.8.x tag and the
full deep-learning image are amd64-only, which is why GROBID never ran on the
aarch64 Jetson. Enable the 4g memory cap + init/ulimits per GROBID docs.
- Add docs/infra/grobid-jetson.md runbook: arm64 image rationale, the two host
prerequisites (docker-group membership + the Compose v2 CLI plugin, both
missing on the Jetson), service-scoped deploy, and the GET /api/isalive check.
Verified live 2026-06-17: native arm64 pull, isalive=true, end-to-end
extract_references on lutz-2024-thesis.pdf = 116 refs (101 with DOI/arXiv).
docs(audit): mark R-A core done (citing coverage 27/29 -> 29/29; edges 920 -> 1022).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
GROBID extracts a cited DOI verbatim from PDF reference text, so it can be mixed-case, a https://doi.org/ URL, or doi:-prefixed. The PDF citation branch inserted it unchanged, while every other path (S2 supplement, OpenAlex, papers.id itself) uses the bare lower-cased DOI. Once R-A runs GROBID reference extraction over arXiv PDFs, those un-normalized cited-ids would never equal a bare-lowercase papers.id/cited_id — dangling the cross-citations and splitting one reference into case-/URL-variant graph nodes.
Extend _norm_cited_id to strip https://doi.org//http://doi.org//doi: prefixes and lower-case (mirroring openalex._normalize_doi), making it the single canonical cited-id normalizer, and route the GROBID branch through it. arXiv ids and S2 paperIds still pass through untouched.
Add test_ingest_pdf_grobid_citations_normalize_doi covering mixed-case, URL-form, and doi:-prefixed DOIs plus an arXiv-only ref.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
openalex._map_paper set Paper.id from the raw `doi` field, which OpenAlex
returns as a full URL (https://doi.org/10.x). The canonical papers.id (M-1
migration) is the bare, lower-cased DOI, so re-ingesting a DOI paper missed
ON CONFLICT (id) and tripped the separate papers_openalex_id_key constraint
(UniqueViolation).
Fix: _normalize_doi() strips https://doi.org//http://doi.org//doi: and
lower-cases; applied in the DOI branch of _map_paper only (W-id fallback
untouched). Also un-breaks _s2_id_for/Crossref recovery, which the URL form
silently defeated. Corrected the _SAMPLE_WORK fixture to the URL form (the bare
fixture hid the bug) + added _normalize_doi and re-ingest idempotency regression
tests.
Live verification: re-ingest of 10.1007/s00454-019-00132-8 (previously crashed)
now UPDATEs in place — single row, added_at unchanged, no stray row, citations
45->45. Unblocks roadmap R-A/R-C. Full suite 348 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Three papers lacked abstracts and 1911.00966 was fully degraded (OpenAlex 404
-> empty `Paper(id, title="")` stub). Recovery sources verified, then wired in:
- arxiv.fetch_metadata: resolve an arXiv id to a Paper via the Atom export API
(authoritative for preprints). Used as an ingest fallback on OpenAlex 404,
replacing the empty stub.
- crossref.py (new): fetch_abstract(doi), JATS-stripped, Crossref Polite Pool.
- semanticscholar.fetch_abstract: fetch just the abstract field.
- ingest.py: _recover_abstract() supplements an empty abstract from S2 then
Crossref *before* embedding, so the paper gets a real (non-zero) vector.
Live DB backfill: 1911.00966 fully recovered from arXiv (bibkey
PinkallSpringborn2019, 384-char abstract, its 10 chunks now visible to chunk
search); 10.1007/s00454-019-00132-8 abstract from S2 (1186 chars). Book chapter
10.1007/978-3-642-17413-1_7 has no abstract in OpenAlex/S2/Crossref -> documented
limit. Corpus now has 1 paper without an abstract.
Also documented DQ-5 (not fixed): ingest_paper is not idempotent for DOI papers
(openalex returns full-URL id vs the bare canonical id) -> re-ingest trips
papers_openalex_id_key. Blocks roadmap R-A/R-C; needs a careful _map_paper fix.
Tests: arxiv/crossref/s2 fetchers + ingest recovery paths (342 passing).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
12/29 papers had zero citations: OpenAlex indexes arXiv preprints and theses
without a parsed reference list (verified referenced_works_count=0 server-side
for all 11 with an openalex_id). Not an ingest bug — a source-coverage limit.
- ingest.py: when OpenAlex returns no references, fall back to a Semantic
Scholar reference supplement (_s2_reference_supplement); citing_id rewritten
to canonical papers.id, DOI cited-ids lowercased. Removed a now-redundant
discarded S2 probe in the OpenAlex-404 arXiv branch.
- semanticscholar.py: fix TypeError on S2's HTTP-200 {"data": null} no-refs
responses (.get("data", []) returns None when the key is present-but-null).
- tests: regression test for the OpenAlex-empty -> S2 path.
- Live DB backfilled idempotently: +330 citations (590->920), zero-out-edge
papers 12->2, citing coverage 17->27/29. Only the 2 TU-Berlin depositonce
theses remain (no references in any source).
- docs: DATA-QUALITY-2026-06-15.md — DQ-1 resolution, DQ-4 result, and a
free-source acquisition roadmap (R-A..R-E).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
`codex search paper` crashed on the live DB with "operator does not exist:
vector <-> double precision[]". The pgvector `<->` operator needs its RHS
typed as vector; peer call sites (mcp_server.py, wiki.py) cast but the CLI
did not. Mocked unit tests never exercise real pgvector, so it went unseen.
Add the cast to both `<->` occurrences and a regression guard asserting the
SQL contains `::vector`.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Committed code predated the line-length=100 ruff config; this brings the
five drifted files into compliance. No logic change.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
build_citation_graph now does:
SELECT c.citing_id, COALESCE(p.id, c.cited_id) AS cited_id
FROM citations c
LEFT JOIN papers p ON p.openalex_id = c.cited_id
Before: cited_id (OpenAlex IDs) never matched papers.id (DOIs) →
13 cross-citations between ingested papers were invisible in graph.
After: in-KB papers use their canonical DOI key; dangling references
keep their raw OpenAlex ID unchanged.
Test: test_cross_citation_uses_doi_when_in_kb (42 passed).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
D-04: add _make_bibkey(paper) — ConcatSurnames+Year, ≤3 authors full list,
>3 authors FirstEtAlYear. Applied in ingest_paper when paper.bibkey is
None. ON CONFLICT now fills NULL bibkeys via COALESCE(papers.bibkey,
EXCLUDED.bibkey) while preserving manually-set values.
D-05b: add codex/__main__.py so `python -m codex` dispatches to the CLI.
D-05c: fix test_ingest.py:75 — rename var to raw_api_citations (the raw
OpenAlex payload with citing_id=openalex_id) and add regression
assertion: citing_id written to DB must equal paper.id (DOI), not
paper.openalex_id.
D-05a (proxy): add TestEntryPoint.test_python_m_codex_help — runs
`sys.executable -m codex --help` via subprocess, covering the
non-uv-run entry path. 253 tests green, ruff+mypy clean.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Lead.__post_init__: raises ValueError on empty provenance list
- find_gaps: no-chunk path now carries topic-marker Provenance instead of []
- _update_index: docstring corrected (rebuilds, not append-only)
- test_model: test_lead_empty_provenance_raises covers the new invariant
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace 3-gram substring match with:
- _last_sentence(): only the last sentence before a citation is checked
(prevents a hallucinated paragraph grounding via a phrase at its end)
- _content_words(): stopwords removed from both claim and chunk before
n-gram comparison (prevents bypass via "the discrete conformal map")
- Content-5-gram: require 5 consecutive non-stopword tokens from last
sentence to appear in the chunk's content-word stream
- Claims with <5 content words in last sentence → ungrounded by default
Add adversarial tests: stopword-3-gram bypass → grounded=False;
legitimate content-5-gram → grounded=True.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add _detect_conflicts() using adversative keyword heuristic (but,
however, in contrast, …) between chunks of different bibkeys; results
populate CompileReport.conflicts and appear in wiki/log.md.
Also add CompileReport.quarantined field (used by Fix 2).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
_inject_cross_refs temporarily replaces backtick spans with null-byte
placeholders before injecting [[slug]] cross-refs, then restores them.
This prevents concept titles inside `code` from being rewritten.
Add tests for inline-code protection and full-list cross-ref injection.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
compile_concept now accepts chunks as a positional parameter; compile_all
retrieves chunks once and passes them directly, avoiding double-retrieve.
Also separates all_concepts (full list) from compile_concepts (filtered),
so cross-ref injection always uses the complete concept list regardless of
--concept filter (Fix 6 + Fix 8).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
_parse_claims now skips matches where bibkey contains spaces or starts
with "http", preventing Markdown hyperlinks like [text](https://...) from
being misidentified as citations. Add two tests.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Implement all CLI commands as specified in F-07: ingest, search, and discover subcommands (leads, citing, cited-by, cocited), and provenance subcommands (scan, add-link, links, bib).
- Add ask command stub that exits with code 1 (not yet implemented).
- Implement comprehensive tests with mocked dependencies (no real DB/API calls).
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Review-Gate finding: GROBID emits type="arXiv" (camel-case), not "arxiv".
XPath literal match silently returned empty strings for all real responses.
Fix: iterate idno elements and compare .lower() == "arxiv".
Test fixture updated to reflect real GROBID output (type="arXiv").
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
