rdflib: Tools to Manipulate and Query Semantic Data

The Resource Description Framework, or RDF is a widely used data representation model that forms the cornerstone of the Semantic Web. 'RDF' represents data as a graph rather than the familiar data table or rectangle of relational databases.

Details

It has three main goals:

• Easily read, write, and convert between all major RDF serialization formats

• Support SPARQL queries to extract data from an RDF graph into a data.frame

• Support JSON-LD format as a first-class citizen in RDF manipulations

For more information, see the Wikipedia pages for RDF, SPARQL, and JSON-LD:

• https://en.wikipedia.org/wiki/Resource_Description_Framework

• https://en.wikipedia.org/wiki/SPARQL

• https://en.wikipedia.org/wiki/JSON-LD

To learn more about rdflib, start with the vignettes: browseVignettes(package = "rdflib")

Configurations via options()

rdf_print_format:

• NULL or "nquads" (default)

• any valid serializer name: e.g. "rdfxml", "jsonld", "turtle", "ntriples"

rdf_base_uri:

• Default base URI to use (when serializing JSON-LD only at this time) default is "localhost://"

rdf_max_print:

• maximum number of lines to print from rdf, default 10

See also

Useful links:

• https://github.com/ropensci/rdflib

• Report bugs at https://github.com/ropensci/rdflib/issues

Author

Maintainer: Carl Boettiger cboettig@gmail.com (ORCID) [copyright holder]

Other contributors:

• Bryce Mecum (ORCID) [reviewer]

• Anna Krystalli (ORCID) [reviewer]

• Viktor Senderov vsenderov@gmail.com (ORCID) [contributor]