HeFQUIN FedBench

This project is intended to provide an easy-to-use benchmark for analyzing the behavior of the HeFQUIN engine under various conditions.

Getting started

Download and clean up the FedBench data using:

./prepare_fedbench_datasets.sh

This will take around 15 minutes to complete but only needs to be executed once.

Next, prepared the HDT files that will be used by the LDF servers. Navigate to hdt-converter and run:

docker compose up

This will convert each of the datasets into a single .hdt that can be used by the LDF endpoints.

Running the servers

The FedBench datasets can be hosted using multiple configurations depending on the requirements. For exposing all FedBench datasets using both SPARQL and TPF/brTPF interfaces, navigate to experiments/all-endpoints and run docker compose up.

Endpoint Overview

This deployment exposes two types of federation-accessible endpoints:

• brTPF/TPF endpoints (under /ldf/...)
• SPARQL endpoints (under /sparql/.../)

All endpoints are reverse-proxied through Nginx on:

http://localhost:8080/

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brTPF / TPF Endpoints

Each dataset is available as a Triple Pattern Fragment (TPF) or brTPF endpoint at:

/ldf/<dataset>

Dataset	Endpoint
chebi	http://localhost:8080/ldf/chebi
dbpedia	http://localhost:8080/ldf/dbpedia
drugbank	http://localhost:8080/ldf/drugbank
geonames	http://localhost:8080/ldf/geonames
jamendo	http://localhost:8080/ldf/jamendo
kegg	http://localhost:8080/ldf/kegg
lmdb	http://localhost:8080/ldf/lmdb
nyt	http://localhost:8080/ldf/nyt
sp2b	http://localhost:8080/ldf/sp2b
swdfood	http://localhost:8080/ldf/swdfood

Each endpoint forwards to the internal LDF server on port 3000.

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SPARQL Endpoints

Each dataset is also exposed as a SPARQL endpoint at:

/sparql/<dataset>/

Dataset	Endpoint
chebi	http://localhost:8080/sparql/chebi/
dbpedia	http://localhost:8080/sparql/dbpedia/
drugbank	http://localhost:8080/sparql/drugbank/
geonames	http://localhost:8080/sparql/geonames/
jamendo	http://localhost:8080/sparql/jamendo/
kegg	http://localhost:8080/sparql/kegg/
lmdb	http://localhost:8080/sparql/lmdb/
nyt	http://localhost:8080/sparql/nyt/
sp2b	http://localhost:8080/sparql/sp2b/
swdfood	http://localhost:8080/sparql/swdfood/

Each endpoint forwards to a Virtuoso SPARQL service on port 8890.

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