hdt ☆

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Description:
Header Dictionary Triples (HDT) is a compression format for RDF data

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: rdf semantic-web compression hdt knowledge-graph

Install: brew install hdt

About:
HDT (Header Dictionary Triples) is a compact binary format and set of tools for storing and exchanging RDF data efficiently. It compresses semantic web datasets by sharing a common dictionary of terms across the header and triple sections. This significantly reduces storage footprint and improves query performance for large-scale knowledge graphs.

Key Features:

High compression ratios for RDF data
Fast random access and pattern matching queries
Standardized format with C++ and Java libraries
Memory-efficient streaming and file mapping

Use Cases:

Archiving and sharing large semantic web datasets
Powering efficient SPARQL query engines
Embedding knowledge graphs in resource-constrained applications

Alternatives:

RDF-3X – An in-memory RDF engine focused on query performance, whereas HDT prioritizes compact storage and sequential access.
Kvrocks – A key-value store with secondary indexes, not specifically optimized for RDF semantics or SPARQL queries.

Version History

Detected	Version	Rev	Change	Commit
Sep 13, 2024 8:51pm		0	VERSION_BUMP	da861477
Sep 13, 2024 1:10pm		0	VERSION_BUMP	ba75f765