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What is RDF?
RDF stands for Resource Description Framework. It is a standard for including metadata and other knowledge on the semantic web. More information can be found here .

In the initial stages RDF development, NIF is making a small set of relational data accessible through search interface in RDF format. Our first example is the NeuronDB from Senselab .

The Senselab RDF contains:

  • Declaration of concepts belonging to class Neuron.
  • Declaration of concepts belonging to class "Part of Brain Region".
  • Asserts "located-in" relationship between these two concepts if reported in the Senselab Dataset.

RDF representation of senselab table Neurons_By_Region restricted to Neuron and Specific_Region table.
The triplets are one of the following type:
<some-neuron> <is-type> <birnlex_762>
<some-region> <is-type> <birnlex_1176>
<some-neuron> <has-label> <tisvalue>
<some-region> <has-label> <tisvalue>
<some-neuron> <is-located-in> <some-region>  //based upon data entry in the Neurons_By_region table

Example:

Unique Neuron Region Mapping (RDF in N3 serialization form)

Meta Concepts (RDF in N3 serialization form)

The SPARQL endpoint for NIF RDF data is hosted at http://rdf.neuinfo.org/sparql. It contains NIFSTD ontology data referenced as http://ontology.neuinfo.org as the default graph URI.  We also include RDF representations of certain NIF data sources, e.g., connectivity data. More information on the SPARQL endpoint can be found at https://confluence.crbs.ucsd.edu/display/NIF/Sparql+endpoint