README.md

metadata

license: cc-by-4.0
language:
  - vi
task_categories:
  - question-answering
  - text-retrieval
tags:
  - legal
  - knowledge-graph
  - neo4j
  - vietnamese
pretty_name: Vietnamese legal knowledge graph
size_categories:
  - 10M<n<100M
configs:
  - config_name: about_act
    data_files:
      - split: train
        path: data/about_act/train-*.parquet
  - config_name: about_concept
    data_files:
      - split: train
        path: data/about_concept/train-*.parquet
  - config_name: about_subject
    data_files:
      - split: train
        path: data/about_subject/train-*.parquet
  - config_name: act_chains
    data_files:
      - split: train
        path: data/act_chains/train-*.parquet
  - config_name: act_participants
    data_files:
      - split: train
        path: data/act_participants/train-*.parquet
  - config_name: acts
    data_files:
      - split: train
        path: data/acts/train-*.parquet
  - config_name: cites
    data_files:
      - split: train
        path: data/cites/train-*.parquet
  - config_name: components
    data_files:
      - split: train
        path: data/components/train-*.parquet
  - config_name: concepts
    data_files:
      - split: train
        path: data/concepts/train-*.parquet
  - config_name: conflicts
    data_files:
      - split: train
        path: data/conflicts/train-*.parquet
  - config_name: contains
    data_files:
      - split: train
        path: data/contains/train-*.parquet
  - config_name: defines
    data_files:
      - split: train
        path: data/defines/train-*.parquet
  - config_name: differs_from
    data_files:
      - split: train
        path: data/differs_from/train-*.parquet
  - config_name: documents
    data_files:
      - split: train
        path: data/documents/train-*.parquet
  - config_name: events
    data_files:
      - split: train
        path: data/events/train-*.parquet
  - config_name: has_norm
    data_files:
      - split: train
        path: data/has_norm/train-*.parquet
  - config_name: has_version
    data_files:
      - split: train
        path: data/has_version/train-*.parquet
  - config_name: instance_of
    data_files:
      - split: train
        path: data/instance_of/train-*.parquet
  - config_name: involves
    data_files:
      - split: train
        path: data/involves/train-*.parquet
  - config_name: mentions
    data_files:
      - split: train
        path: data/mentions/train-*.parquet
  - config_name: merged_concepts
    data_files:
      - split: train
        path: data/merged_concepts/train-*.parquet
  - config_name: norm_details
    data_files:
      - split: train
        path: data/norm_details/train-*.parquet
  - config_name: norm_edges
    data_files:
      - split: train
        path: data/norm_edges/train-*.parquet
  - config_name: norms
    data_files:
      - split: train
        path: data/norms/train-*.parquet
  - config_name: relations
    data_files:
      - split: train
        path: data/relations/train-*.parquet
  - config_name: subject_parents
    data_files:
      - split: train
        path: data/subject_parents/train-*.parquet
  - config_name: subjects
    data_files:
      - split: train
        path: data/subjects/train-*.parquet
  - config_name: temporal_edges
    data_files:
      - split: train
        path: data/temporal_edges/train-*.parquet
  - config_name: temporal_versions
    data_files:
      - split: train
        path: data/temporal_versions/train-*.parquet
  - config_name: term_use_edges
    data_files:
      - split: train
        path: data/term_use_edges/train-*.parquet
  - config_name: term_uses
    data_files:
      - split: train
        path: data/term_uses/train-*.parquet
  - config_name: terms
    data_files:
      - split: train
        path: data/terms/train-*.parquet
  - config_name: text_versions
    data_files:
      - split: train
        path: data/text_versions/train-*.parquet

luatdo-graph

A knowledge graph over Vietnamese law, built from about 128,000 documents by luatdo.

This is the result of running the pipeline, published so that nobody has to run it again. The pipeline takes days and several hundred dollars of model calls, and the output is the same for everyone.

What is in it

Nodes	8,175,346
Relationships	9,119,011
Node tables	14
Relationship tables	19
Node labels	13
Parquet	623MB across 47 files
Neo4j archive	550MB gzipped, about 3.4GB unpacked

The labels present in the data are Act, Component, Condition, Document, Event, LegalConcept, Norm, Provision, Subject, TemporalVersion, Term, TermUse, TextVersion. That is counted from the rows rather than read off the schema, which defines more labels than the extraction has so far filled.

The graph is not a shadow of the document structure. Definitions, normative statements, temporal versions and act chains are all extracted by language models reading the text, with the provision each claim came from recorded on the claim.

Two shapes of the same graph

The Parquet files under data/ are the graph as tables, one directory per table, and they are what the viewer above is showing. Node tables have an id and a labels list. Relationship tables have a start_id, an end_id and a type, and the endpoints join to node id. Every table is typed, so numbers are numbers and an absent value is null rather than an empty string.

luatdo-graph-2026.08.1.tar.gz is the same graph as a Neo4j offline import set, which is what to download if you want to run queries over it rather than read it as tables. It is not a Neo4j database directory, so it does not depend on a Neo4j version.

Reading the tables

import pandas as pd

url = "hf://datasets/open-index/luatdo-graph/data"
docs = pd.read_parquet(f"{url}/documents/train-00000-of-00001.parquet")

Or with the datasets library, one config per table:

from datasets import load_dataset

docs = load_dataset("open-index/luatdo-graph", "documents", split="train")

Or in duckdb, which will read the whole set of shards from a glob and join across tables:

select d.title, count(*) as citations
from 'data/documents/train-*.parquet' d
join 'data/cites/train-*.parquet' c on c.start_id = d.id
group by 1 order by 2 desc limit 10;

Loading it into Neo4j

luatdo neo4j install

That downloads the archive, checks it against a pinned checksum, imports it into a local Neo4j, and waits until the database answers a query. It works the same on Linux, macOS and Windows.

By hand, with any Neo4j 5 and a container runtime:

curl -fLO https://huggingface.co/datasets/open-index/luatdo-graph/resolve/main/luatdo-graph-2026.08.1.tar.gz
tar -xzf luatdo-graph-2026.08.1.tar.gz
docker volume create luatdo-neo4j-data
docker run --rm -v "$PWD/neo4j:/import:ro" -v luatdo-neo4j-data:/data -w /import \
  neo4j:5.26 sh ./import.sh --report-file=/data/import.report
docker run -d --name luatdo-neo4j -p 7474:7474 -p 7687:7687 \
  -v luatdo-neo4j-data:/data \
  -e NEO4J_AUTH=neo4j/luatdo-local \
  -e NEO4J_initial_dbms_default__database=luatdo \
  neo4j:5.26

import.sh passes anything you give it through to neo4j-admin, where a repeated option takes the last value. That is how the report is moved off the read only mount above. The export belongs to whoever downloaded it and the image runs as its own user, so on a rootful docker host the report is the one file the import cannot write.

The database name matters. Neo4j Community runs one user database, and the import writes into luatdo, so a server started without that setting comes up healthy and holds nothing.

The tables

Nodes:

Table	Rows	Size	Labels
acts	362	39KB	Act
components	4,360,083	51MB	Component, Provision
concepts	43	3KB	LegalConcept
conflicts	0	1KB
documents	128,097	8MB	Document
events	52	9KB	Event
merged_concepts	0	1KB
norm_details	631	30KB	Condition
norms	849	89KB	Norm
subjects	168	8KB	Subject
temporal_versions	2,031	96KB	TemporalVersion
term_uses	337	89KB	TermUse
terms	2,315	43KB	Term
text_versions	3,680,378	467MB	TextVersion

Relationships:

Table	Rows	Size
about_act	247	10KB
about_concept	0	1KB
about_subject	305,481	3MB
act_chains	100	13KB
act_participants	0	1KB
cites	758,912	9MB
contains	4,360,083	30MB
defines	2,555	29KB
differs_from	0	1KB
has_norm	849	11KB
has_version	3,680,378	59MB
instance_of	0	1KB
involves	0	1KB
mentions	0	1KB
norm_edges	2,579	24KB
relations	0	1KB
subject_parents	144	3KB
temporal_edges	7,002	40KB
term_use_edges	681	15KB

Versions

Version	What changed
2026.08.1	The import scripts pass their arguments through to neo4j-admin, so the report can be moved off a read only mount. Later republished as Parquet as well, with the archive unchanged, so there is nothing to download again
2026.08	First publication

Versioning

The dataset is versioned apart from the code, as luatdo-graph-YYYY.MM.tar.gz. A corpus grows when somebody runs the pipeline over more of it, and the tool changes when somebody changes the tool, and tying the two together would mean re-uploading half a gigabyte to publish a one line fix. Each luatdo release records the dataset version it was built against.

Provenance and limits

The source documents come from public Vietnamese legal corpora on the Hub, and the extraction on top of them is machine made. Every extracted claim carries the provision it was read out of, so anything here can be checked against its source text, and anything here can be wrong. Do not treat it as legal advice.

Some layers are much further along than others, and the row counts above are the honest account of which. The document, provision, text version, citation, definition, subject, norm, temporal and act layers are populated. The concept layer is not. Concept mentions, concept relations, instance links, concept merges and the recorded conflicts are all empty, and the concept table itself holds a few dozen rows rather than the thousands the pipeline is capable of producing. Those layers sit behind a human review queue that has not been worked through, so a query about concepts will return nothing rather than something wrong.

A table with no rows is published as an empty table rather than left out. A layer that came out empty and a layer that was never exported are different things, and the file list is the only place that difference shows.

License

CC BY 4.0. The underlying legal texts are Vietnamese government documents.