Crate legalis_lod 

Legalis-LOD: Linked Open Data (RDF/TTL) export for Legalis-RS.

This crate provides comprehensive RDF export and Linked Data functionality for legal statutes.

RDF Formats Supported

• Turtle (TTL) - Human-readable RDF format
• N-Triples (NT) - Line-based RDF format
• RDF/XML - XML serialization of RDF
• JSON-LD - JSON-based RDF format
• TriG - Named graph format

Ontologies and Vocabularies

• ELI (European Legislation Identifier)
• FaBiO (FRBR-aligned Bibliographic Ontology)
• LKIF-Core (Legal Knowledge Interchange Format)
• LegalRuleML (OASIS standard for legal rules)
• Akoma Ntoso (Legal document markup)
• FRBR (Functional Requirements for Bibliographic Records)
• Dublin Core (dc, dcterms)
• SKOS (Simple Knowledge Organization System)
• VOID (Vocabulary of Interlinked Datasets)
• PROV-O (Provenance Ontology)
• Custom Legalis ontology

Linked Data Features

• Cool URIs for legal resources (ELI-style, hierarchical, flat patterns)
• URI dereferencing with content negotiation
• owl:sameAs linking for entity resolution
• rdfs:seeAlso for related resources
• Integration with EUR-Lex, legislation.gov.uk, Wikidata, DBpedia

Additional Features

• SHACL and ShEx validation
• SPARQL query generation
• Streaming serialization for large datasets
• Export caching
• RDFa output for HTML embedding
• Provenance tracking (PROV-O)
• License metadata (Creative Commons, etc.)

See EXAMPLES.md for detailed usage examples.

Modules

audit_log

Audit logging for knowledge graph access and operations.

av_annotation

Audio/video annotation for legal multimedia content.

bitemporal

Bitemporal knowledge modeling for legal data.

blockchain

Blockchain-anchored provenance for legal knowledge graphs.

cache

Export caching for improved performance.

competency_questions

Competency question testing for ontology validation.

compliance

Compliance reporting from knowledge graphs.

content_addressed

Content-addressed RDF storage using cryptographic hashing.

continuous_query

Continuous query evaluation for real-time legal intelligence.

crossmodal_reasoning

Cross-modal reasoning for legal knowledge graphs.

crowdsourced_evolution

Crowdsourced ontology evolution framework.

dcat

DCAT (Data Catalog Vocabulary) support for dataset publishing.

did

Decentralized Identifier (DID) support for legal resources.

document_layout

Document layout representation for knowledge graphs.

embeddings

Graph embedding generation for knowledge graphs.

enterprise_deployment

Enterprise knowledge graph deployment framework.

entity_linking

Entity linking for legal knowledge graphs.

external

External data source integrations.

fusion

Legal knowledge fusion for integrating data from multiple sources.

geosparql

GeoSPARQL 1.1 support for legal jurisdictions and spatial reasoning.

governance

Knowledge governance workflows for enterprise RDF management.

image_rdf

Image-to-RDF extraction for legal documents.

ipld

IPLD (InterPlanetary Linked Data) support for legal knowledge graphs.

jurisdiction_queries

Jurisdiction geometry query support for legal knowledge graphs.

kg_completion

Knowledge graph completion for legal knowledge graphs.

knowledge_graph

Knowledge graph construction and entity relationship extraction.

ldn

Linked Data Notifications (LDN) support.

link_prediction

Embedding-based link prediction for legal knowledge graphs.

linked_data

Linked Data features for Legalis-LOD.

map_exploration

Map-based knowledge exploration for legal geographic data.

multimodal_alignment

Multi-modal entity alignment for legal knowledge graphs.

neural_symbolic

Neural-symbolic reasoning integration for combining neural networks with symbolic reasoning.

ontology

Legal ontology support for Legalis-LOD.

ontology_alignment

Ontology alignment tools for mapping between different ontologies.

ontology_learning

Ontology learning from legal text.

ontology_metrics

Ontology metrics and quality assessment.

ontology_versioning

Ontology versioning with change tracking.

quality

Data quality metrics for RDF/LOD data.

rbac

Role-Based Access Control (RBAC) for RDF data.

rdfa

RDFa (RDF in Attributes) output for HTML embedding.

rdfstar

RDF-star (RDF*) support for making statements about statements.

realtime

Real-time graph updates with pub/sub and incremental materialization.

reasoning

OWL 2 RL reasoning and legal-specific inference rules.

relation_extraction

Automatic relation extraction for legal knowledge graphs.

shacl

SHACL (Shapes Constraint Language) shape generation.

shex

ShEx (Shape Expressions) schema generation.

similarity

Semantic similarity indexing for efficient similarity search.

sparql

SPARQL query generation and endpoint support for exported RDF data.

sparqlstar

SPARQL-star query support for querying RDF-star data.

spatial_reasoning

Spatial reasoning for legal zones and geographic constraints.

store

In-memory RDF triple store with optional persistence.

streaming

Streaming RDF serialization for large datasets.

streaming_sparql

Streaming SPARQL query processing for continuous data flows.

temporal_consistency

Temporal consistency checking for time-aware legal knowledge graphs.

temporal_rdf

Temporal RDF with RDF-star support for time-aware legal knowledge graphs.

time_aware_queries

Time-aware SPARQL queries for temporal legal knowledge graphs.

validation

RDF validation utilities.

verifiable

Verifiable Credentials for legal data.

versioning

Dataset versioning and change tracking.

void_desc

VOID (Vocabulary of Interlinked Datasets) descriptions.

Structs

LicenseInfo

License information for RDF export.

LodExporter

LOD exporter for legal statutes.

Namespaces

Standard namespace prefixes for legal ontologies.

ProvenanceInfo

Provenance information for RDF export.

Triple

RDF triple representation.

Enums

LodError

Errors during LOD export.

RdfFormat

RDF serialization format.

RdfValue

RDF object value types.

Type Aliases

LodResult

Result type for LOD operations.