SPARQL Syntax Expressions (alternatively, SPARQL S-Expressions) is a

parse tree A parse tree or parsing tree or derivation tree or concrete syntax tree is an ordered, rooted tree that represents the syntactic structure of a string according to some context-free grammar. The term ''parse tree'' itself is used primarily in co ...

(a.k.a. concrete syntax) for representing

SPARQL SPARQL (pronounced " sparkle" , a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language—that is, a semantic query language for databases—able to retrieve and manipulate data stored in Resource Description ...

Algebra Algebra () is one of the broad areas of mathematics. Roughly speaking, algebra is the study of mathematical symbols and the rules for manipulating these symbols in formulas; it is a unifying thread of almost all of mathematics. Elementary ...

expressions.

Application

They have been used to apply the BERT language model to create SPARQL queries from

natural language In neuropsychology, linguistics, and philosophy of language, a natural language or ordinary language is any language that has evolved naturally in humans through use and repetition without conscious planning or premeditation. Natural languages ...

questions.

External links

SPARQL Algebra in the W3C SPARQL Query Specification

that can also print the Algebra expressions
SPARQL Syntax Expressions translations of the DAWG test suite

References

SPARQL RDF data access {{Comp-sci-stub