nasa-gesdisc-kg

NASA-GESDISC-KG

The NASA Knowledge Graph Dataset is an expansive graph-based dataset designed to integrate and interconnect information about satellite datasets, scientific publications, instruments, platforms, projects, data centers, and science keywords. This knowledge graph is particularly focused on datasets managed by NASA's Distributed Active Archive Centers (DAACs), which are NASA's data repositories responsible for archiving and distributing scientific data. In addition to NASA DAACs, the graph includes datasets from 184 data providers worldwide, including various government agencies and academic institutions.

2.2M triples
7 classes
28 properties
145.7K subjects

The primary goal of the NASA Knowledge Graph is to bridge scientific publications with the datasets they reference, facilitating deeper insights and research opportunities within NASA's scientific and data ecosystem. By organizing these interconnections within a graph structure, this dataset enables advanced analyses, such as discovering influential datasets, understanding research trends, and exploring scientific collaborations.

Count how many publications use each dataset 
PREFIX schema: <https://nasa-gesdisc.proto-okn.net/kg/schema/>
SELECT ?Dataset (COUNT (DISTINCT ?Publication) AS ?PublicationCount)
WHERE {
	?Publication schema:USES_DATASET ?Dataset
}
GROUP BY ?Dataset
ORDER BY DESC(?PublicationCount)
LIMIT 25

graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
  v3("?Dataset"):::projected 
  v2("?Publication"):::projected 
  v4("?PublicationCount")
  v2 --"nasa-gesdisc:USES_DATASET"-->  v3
  bind1[/"count(?Publication)"/]
  v2 --o bind1
  bind1 --as--o v4
Run in FRINK
List datasets and their science keywords 
PREFIX schema: <https://nasa-gesdisc.proto-okn.net/kg/schema/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT *
WHERE {
	?Dataset schema:HAS_SCIENCEKEYWORD ?ScienceKeyword .
  	?ScienceKeyword rdfs:label ?KeywordLabel
}
LIMIT 25

graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
  v1("?Dataset"):::projected 
  v3("?KeywordLabel"):::projected 
  v2("?ScienceKeyword"):::projected 
  v1 --"nasa-gesdisc:HAS_SCIENCEKEYWORD"-->  v2
  v2 --"rdfs:label"-->  v3
Run in FRINK
Find science keywords most frequently cited by publications 
PREFIX schema: <https://nasa-gesdisc.proto-okn.net/kg/schema/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?ScienceKeyword (COUNT (DISTINCT ?Publication) AS ?PublicationCount)
WHERE { 
        ?Publication schema:USES_DATASET ?Dataset .
        ?Dataset schema:HAS_SCIENCEKEYWORD ?Keyword .
        ?Keyword rdfs:label ?ScienceKeyword
}
GROUP BY ?ScienceKeyword
ORDER BY DESC(?PublicationCount)
LIMIT 25

graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
  v3("?Dataset")
  v4("?Keyword")
  v2("?Publication"):::projected 
  v6("?PublicationCount")
  v5("?ScienceKeyword"):::projected 
  v2 --"nasa-gesdisc:USES_DATASET"-->  v3
  v3 --"nasa-gesdisc:HAS_SCIENCEKEYWORD"-->  v4
  v4 --"rdfs:label"-->  v5
  bind1[/"count(?Publication)"/]
  v2 --o bind1
  bind1 --as--o v6
Run in FRINK
List publications and the datasets they use 
PREFIX schema: <https://nasa-gesdisc.proto-okn.net/kg/schema/>
SELECT *
WHERE {
	?Publication schema:USES_DATASET ?Dataset
}
LIMIT 25

graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
  v2("?Dataset"):::projected 
  v1("?Publication"):::projected 
  v1 --"nasa-gesdisc:USES_DATASET"-->  v2
Run in FRINK
List publications by year and title 
PREFIX time: <http://www.w3.org/2006/time#>
PREFIX dcterms: <http://purl.org/dc/terms/>
PREFIX schema: <https://schema.org/>
PREFIX gesdisc: <https://nasa-gesdisc.proto-okn.net/kg/schema/>
SELECT ?pub ?year ?title   {
  ?pub a gesdisc:Publication .
  ?pub time:year ?year .
  ?pub schema:title ?title .
}
LIMIT 100

graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
  v1("?pub"):::projected 
  v3("?title"):::projected 
  v2("?year"):::projected 
  c2([nasa-gesdisc:Publication]):::iri 
  v1 --"a"-->  c2
  v1 --"time:year"-->  v2
  v1 --"schema:title"-->  v3
Run in FRINK
SPARQL Endpoint https://frink.apps.renci.org/nasa-gesdisc-kg/sparql
Triple Pattern Fragments https://frink.apps.renci.org/ldf/nasa-gesdisc-kg
ClassEntities
PropertyTriples