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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


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 It contains NIFSTD ontology data referenced as 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