justicedao/ipfs_malta_laws-ir

Malta legislation IR (CID-keyed sparse GraphRAG)

Research retrieval release of endomorphosis/ipfs_malta_laws (revision 6f742a48f20327e7649dca35493ae36737ee6a6e) packaged in the skillcenter-huggingface-release/v3 thin-client layout.

Not legal advice. This is a research snapshot. The official gazette / authentic source of Malta prevails over this corpus. Retrieved documents and graph edges are retrieval evidence only.

Primary key: entry_cid (CIDv1 raw sha2-256 of a canonical identity record). Integer document_index values are compact shard pointers, not identities.

Counts

Field	Value
Laws	655
Articles	0
Canonical docs	655
BM25 terms	1814
BM25 postings	83140
Graph nodes	1313
Graph edges	7860
Vectors	655 × 384-d thenlper/gte-small

Schema mapping

Source tables data/laws.parquet + data/articles.parquet. Required identifiers (laws.id, articles.id, articles.law_id) are fail-closed: the packager refuses to invent missing ids.

Source	Canonical
laws.id	source_id, law_id
laws.title	title
laws.text	body
articles.id	source_id, article_id
articles.law_id	law_id, parent_law_id
articles.title / text	title / body

Column-name drift check (Malta vs Germany): same names; article_count is int64 on Malta and int32 on Germany; Germany eli is often null.

Index layout

Zstandard parquet shards with at most 4,096 rows.

• indexes/bm25_keyword_shards.parquet maps lexical term ranges to BM25 posting shards.
• indexes/vector_chunks.parquet stores semantic routing centroids; rows inside each shard are sorted by decreasing cosine to the shard centroid.
• indexes/corpus_chunks.parquet maps document ranges to canonical corpus shards.
• data/graph/nodes and data/graph/edges are the property graph.
• data/graph/adjacency/{incoming,outgoing} stores score-ordered neighbor pages.

BM25: Okapi k1=1.2, b=0.75, title_weight=5, body_weight=1.

Graph: one node per entry_cid, facet nodes for jurisdiction / law_id / language / source, BM25_NEIGHBOR_OF edges (k=8), and article CONTAINED_IN law edges when articles exist.

Query

python -m pip install pyarrow pandas numpy huggingface_hub sentence-transformers
python scripts/query_country_laws_hf.py --local-dir . bm25 "constitution" --top-k 10
python scripts/query_country_laws_hf.py --local-dir . vector "money laundering" --top-k 10
python scripts/query_country_laws_hf.py --local-dir . graph neighbors <entry_cid>

Remote:

python scripts/query_country_laws_hf.py --repo-id justicedao/ipfs_malta_laws-ir bm25 "constitution"

Normalize + generation code lives in country_laws_ir/ in this dataset repo.

Exclusions

ipfs_belgium_laws, ipfs_portugal_laws, and ipfs_lithuania_laws are incomplete Wayback harvests and are excluded from this indexing pipeline.

Provenance

Packaged by country-laws-ir. Upstream collector and official license remain those of endomorphosis/ipfs_malta_laws. CIDs identify local content; they do not prove public IPFS pinning.

Scrapers & normalizer

The scrapers and normalizer that produced this dataset are published in justicedao/world_law_scrapers (canonical schema: law_id, id, title, text, source_url, document_number, article_number, record_type, metadata_json, matching endomorphosis/ipfs_malta_laws).