tuandunghcmut/multipage-dla-pdf-corpus-full

Generated at: 2026-05-02T16:24:49+00:00

Scope

Public-safe PDF corpus export from the multipage DLA pdf_preparation subproject. The export is filtered to accepted records with redistribution=yes, without policy-denied URLs, without Mixed-Verify records, without training-only records, and without records that require PII review. The corpus is designed for research on multipage Document Layout Analysis (DLA), especially layouts where headings, tables, forms, legal text, annexes, lists, and cross-page continuations appear in realistic applied documents.

This dataset is a public-safe corpus snapshot for research and engineering review. It is not reviewed gold data, and it should not be cited as a final benchmark without additional review.

Export policy

• Catalog source: metadata/catalog.jsonl
• Status filter: accepted
• Include Mixed-Verify: False
• Public-safe filter: True
• Repository visibility: public
• Local filesystem paths are not part of the public dataset contract. Use hf_repo_path for files inside this repository and source_url for provenance.

Aggregate

Metric	Value
PDFs	1814
Pages	76140
Source modules represented	33

Family taxonomy

The A-E labels are domain families used to balance the PDF corpus. They are not model labels and are not intended as document-layout categories.

Family	Meaning	PDFs	Pages	Example source modules
A	Standards, cybersecurity, quality, and ISO-pattern documents.	552	17022	ietf_rfcs, nist_sp800_curated, fips_publications, epa_quality_guidance_curated
B	Financial, banking, consumer-finance, supervision, and institutional reports.	103	5465	fincen_guidance, federal_reserve_pubs, ffiec_it_handbooks, fed_annual_reports_curated
C	Legal, regulatory, government audit, rule, bill, and court-opinion documents.	152	3217	federal_register_articles, supreme_court_opinions, congress_bills_curated, ftc_reports
D	Forms, tax instructions, procurement, compliance, and reporting documents.	106	3034	irs_publications, irs_current_forms_landing, irs_forms_curated, uscis_forms_instructions
E	Common/everyday multipage public documents used to preserve general layout coverage.	901	47402	archive_org_pd_pdfs, gutenberg_pdf_books, va_benefits_handbooks, national_archives_publications

Legal, redistribution, and privacy posture

This dataset is curated as a lawful, public-source research corpus for multipage document layout analysis. The collection process is designed to avoid private, confidential, paywalled, credential-gated, or access-restricted documents.

Key safeguards:

• Source scope: crawlers target public institutional, government, public-domain, standards, regulatory, and public-information PDF sources.
• Deny-list policy: known restricted or paid standards sources are blocked by deterministic source policy and are not intentionally included.
• License policy: each source is assigned a deterministic license_tag and redistribution policy; reviewers can audit these fields per PDF in metadata/catalog.jsonl.
• Privacy policy: the pipeline does not crawl private drives, emails, chats, internal company repositories, personal cloud folders, or user-submitted private documents.
• PII safeguards: sources that may require additional privacy review are marked with pii_review_required; such records should not be promoted beyond private/internal research use without review.
• Local-path privacy: local filesystem paths are not exposed as dataset metadata; the Hub catalog uses hf_repo_path, source_url, hashes, sizes, and redacted audit placeholders.
• Review status: records marked review_required or Mixed-Verify remain explicitly flagged for additional legal/privacy review before any broader public redistribution.

Within these controls, the dataset is intended to be a privacy-respecting and license-aware research corpus. The metadata is structured so reviewers can trace every file back to source policy, provenance, and quality status. This data card is not legal advice; final release decisions should still follow the project's documented review process.

Source and provenance model

Each PDF is traceable through metadata/catalog.jsonl. The catalog has one JSON object per PDF. Reviewers can inspect:

• source_id and source_display_name to identify the crawler/source definition.
• source_url and source_domain to identify where the PDF came from.
• hf_repo_path to locate the file inside this Hugging Face repository.
• sha256, file_size_bytes, and page_count to support reproducibility checks.
• license_tag, redistribution, status, and review_status to understand release policy and data quality status.

The data card summarizes the corpus. The catalog is the authoritative per-file audit table.

Largest represented source modules

Source ID	Display name	Family	PDFs	Main source domains
archive_org_pd_pdfs	Internet Archive PD multi-page PDFs	E	814	archive.org
ietf_rfcs	IETF RFC archive	A	500	www.rfc-editor.org
federal_register_articles	Federal Register article-level PDFs	C	81	www.govinfo.gov
gutenberg_pdf_books	Project Gutenberg PDF books	E	73	www.gutenberg.org
fincen_guidance	FinCEN advisories, bulletins, and fact sheets	B	49	www.fincen.gov
federal_reserve_pubs	Federal Reserve Board publications	B	32	www.federalreserve.gov
supreme_court_opinions	U.S. Supreme Court slip opinions	C	30	www.supremecourt.gov
irs_publications	IRS publications and instructions	D	29	www.irs.gov
nist_sp800_curated	NIST SP-800 cybersecurity (curated)	A	27	nvlpubs.nist.gov
congress_bills_curated	Congress.gov bills (curated recent)	C	26	www.govinfo.gov
irs_current_forms_landing	IRS current forms and instructions landing page	D	23	www.irs.gov
irs_forms_curated	IRS form instructions (curated)	D	17	www.irs.gov
fips_publications	NIST FIPS standards	A	12	nvlpubs.nist.gov
uscis_forms_instructions	USCIS forms and instructions	D	12	www.uscis.gov
ffiec_it_handbooks	FFIEC IT examination handbooks	B	10	ithandbook.ffiec.gov
irs_instructions_boost	IRS additional form instructions curated	D	10	www.irs.gov
uscis_forms_boost	USCIS additional forms and instructions curated	D	10	www.uscis.gov
ftc_reports	FTC consumer-protection reports	C	7	www.ftc.gov
uscourts_rules	U.S. Courts rules of practice and procedure	C	7	www.uscourts.gov
va_benefits_handbooks	VA veterans benefits handbooks	E	7	www.vba.va.gov, benefits.va.gov

Metadata schema

The uploaded catalog is intended to be readable by both scripts and reviewers. Important fields are:

Field	Meaning
catalog_id	Stable row identifier for the exported catalog.
document_id	Document identifier from the source manifest.
source_id	Crawler/source module that produced the record.
source_display_name	Human-readable source name.
family	A-E domain family used for balancing and reporting.
family_name	Longer family label when available.
source_url	Original URL from which the PDF was discovered or downloaded.
source_domain	Domain extracted from the source URL for provenance review.
hf_repo_path	Path of the PDF inside this Hugging Face dataset repository.
status	Filtering status such as accepted, quarantined, or pending, depending on the export filter.
license_tag	License/policy tag assigned by deterministic source policy.
redistribution	Whether the current policy allows redistribution in this private export.
sha256	Content hash for deduplication and reproducibility checks.
file_size_bytes	PDF size in bytes.
page_count	Detected page count used by corpus filters.
language	Detected or source-assumed language.
quality_score	Heuristic score for prioritization, not a gold-quality label.
quality_features	Supporting quality signals used by the filter/scoring pass.
is_scanned_estimate	Heuristic estimate for scanned/image-heavy documents.
review_status	Data quality status such as structurally_validated or review_required.
pii_review_required	Flag for records that may need extra review before broader release.
raw_path_redacted	Redacted local audit placeholder. Use hf_repo_path for dataset access.

By status

Status	PDFs
accepted	1814

By license tag

License tag	Meaning	PDFs
PD	Public-domain or open public-domain-like source policy.	887
Free-Standard-IETF	Freely accessible standards/RFC-style source policy.	500
PD-US-Gov	United States government/public-sector source policy used for redistribution review.	422
Free-Standard-ECMA-OASIS-OGC	Source-specific license/policy tag.	5

Important limitations

• Per-file metadata is authoritative in metadata/catalog.jsonl.
• Mixed-Verify files need license review before public redistribution.
• This private dataset may include candidate annotations and should not be described as reviewed gold data.
• quality_score is a heuristic corpus-management score, not a human rating.
• The current snapshot reflects the crawler/filter state at export time. Future exports may add sources or rebalance families.