Skip to content

Learn More about the Knowledge Graphs in PROTO-OKN

The information provided about Theme 1 graphs was obtained from an analysis of the graphs that were deposited in the FRINK Landing zone, using LinkML schema to generate the schema and using a modification of this documentation generator to produce readable pages with class diagrams from that schema.

Need to correct your graph's information? Please contact Mahir Morshed.

Graph Notation & Assumptions

IRI Prefixes

The following IRI prefixes have been identified in the Theme 1 graphs and are documented for each graph where applicable.

prefix IRI
sosa: http://www.w3.org/ns/sosa/
umls: https://identifiers.org/umls:
niehs: https://ice.ntp.niehs.nih.gov/property/
semsci: http://semanticscience.org/resource/SIO_
dc: http://purl.org/dc/elements/1.1/
sockg: http://www.semanticweb.org/zzy/ontologies/2024/0/soil-carbon-ontology/
dreamkg: http://www.semanticweb.org/dreamkg/ijcai/
dct: http://purl.org/dc/terms/
xsd: http://www.w3.org/2001/XMLSchema#
geo: http://www.opengis.net/ont/geosparql#
cheminf: http://purl.obolibrary.org/obo/CHEMINF_
obo: http://purl.obolibrary.org/obo/
owl: http://www.w3.org/2002/07/owl#
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#
scales: http://schemas.scales-okn.org/rdf/scales#
hsdo: http://schema.org/
schema: https://schema.org/
neo4j: neo4j://graph.schema#
rural: http://sail.ua.edu/ruralkg/
example: http://example.org/ns#
securechain: https://w3id.org/secure-chain/
prov: http://www.w3.org/ns/prov#
io: https://spec.industrialontologies.org/ontology/core/Core/
iosc: https://spec.industrialontologies.org/ontology/supplychain/SupplyChain/
sudokn: http://asu.edu/semantics/SUDOKN/
sudokn2: Utilities:communication/
sudokn3: Utilities:water/
usfrsdata: http://sawgraph.spatialai.org/v1/us-frs-data#
usfrs: http://sawgraph.spatialai.org/v1/us-frs#
naics: http://sawgraph.spatialai.org/v1/fio/naics#
skos: http://www.w3.org/2004/02/skos/core#
rdfs: http://www.w3.org/2000/01/rdf-schema#
bao: http://www.bioassayontology.org/bao#BAO_
edam: http://edamontology.org/
qudt: http://qudt.org/schema/qudt/
ilisgs: http://sawgraph.spatialai.org/v1/il-isgs#
meegad: http://sawgraph.spatialai.org/v1/me-egad#
memgs: http://sawgraph.spatialai.org/v1/me-mgs#
ussdwis: http://sawgraph.spatialai.org/v1/us-sdwis#
pfas: http://sawgraph.spatialai.org/v1/pfas#
contaminoso: http://sawgraph.spatialai.org/v1/contaminoso#
relation: http://relation.org/
attribute: http://attribute.org/
phila: https://metadata.phila.gov/

Ontology (owl:Ontology)

Currently, a single HDT file is assumed to represent an entire unit of data modeled in a specific way. As a result, exactly one type of entity has been inferred to exist in the Theme 1 graphs: owl:Ontology

Consequently, triples for an entity with a CURIE of example:myOntology will have the following effects:

Classes (owl:Class or rdfs:Class)

Entities are assumed to be either an rdfs:Class or an owl:Class. Consequently, triples for an entity with a CURIE of example:myClass" will either be represented as rdfs:Class or owl:Class. Triples will have the following effects:

Predicates

Predicates, e.g., example:myPredicate will be represented with at least one of the following triples as appropriate:

In turn, these triples will have the following effects: