Examples
Worked examples
- Is an instance
A DBpedia TPF endpoint allowing federated queries without running a heavyweight SPARQL endpoint.
- Is an instance
A research-information graph published as TPF for client-side joining with other LDF sources.
Counter-examples
Looks similar, but isn't
- Not an instance
A REST API returning JSON is not LDF.
- Not an instance
A static SPARQL dump alone is one extreme of the LDF spectrum, not the full LDF interface.
Editorial commentary
Introduced by Ruben Verborgh and colleagues, Linked Data Fragments (LDF) reframe RDF publishing as a spectrum of client-server query-cost trade-offs. At one extreme, a SPARQL endpoint answers arbitrary queries (server-heavy). At the other, a static RDF dump requires the client to do all query work (client-heavy). The intermediate Triple Pattern Fragments (TPF) interface answers queries restricted to a single triple pattern, letting a federation of cheap servers support globally-scaled SPARQL via client-side query planning.
References
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Also known as
LDF · Triple Pattern Fragments
Machine-readable encodings
Use in your systems
<role vocab="credit"
vocab-identifier="https://casrai.org/dictionary/"
vocab-term="Linked Data Fragments"
vocab-term-identifier="https://casrai.org/dictionary/term/linked-data-fragments" />{
"@context": "https://schema.org",
"@type": "DefinedTerm",
"name": "Linked Data Fragments",
"identifier": "https://casrai.org/dictionary/term/linked-data-fragments",
"description": "A family of Web interfaces for publishing RDF data — ranging from data dumps through SPARQL endpoints to lightweight Triple Pattern Fragments — designed to allow clients to query large RDF datasets without overloading the server.",
"inDefinedTermSet": "https://casrai.org/dictionary/domain/research-information-systems-and-integration/",
"url": "https://casrai.org/dictionary/term/linked-data-fragments",
"sameAs": [
"LDF",
"Triple Pattern Fragments"
],
"license": "https://creativecommons.org/licenses/by/4.0/"
}
