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Relationships
A relationship in the graph is represented by the following data type, which aims to model a directed edge between two nodes, providing information about the semantic of the relation, its provenance and validation.
The Relationship object
source
Type: Node • Cardinality: ONE
Represents the source node in the relation.
"source": {
"id": "20|openorgs____::1cb75a3ad756e4c83e455e3e7347643b",
"type": "organization"
}
target
Type: Node • Cardinality: ONE
Represents the target node in the relation.
"target": {
"id": "10|doajarticles::022409068174087a003647ff46070f7f",
"type": "datasource"
}
reltype
Type: RelType • Cardinality: ONE
Represent the semantics of the relation between two nodes of the graph.
"reltype": {
"name": "provides",
"type": "provision"
}
provenance
Type: Provenance • Cardinality: ONE
Indicates the process that produced (or provided) the information.
"provenance": {
"provenance": "Harvested",
"trust":"0.900"
}
validated
Type: Boolean • Cardinality: ONE
Indicates weather or not the relation was validated.
"validated": true
validationDate
Type: String • Cardinality: ONE
Indicates the validation date of the relation - applies only when the validated flag is set to true.
"validationDate": "2022-09-02"
The Node object
The Node data type contains the minimum information needed to identify a graph node, its identifier and entity type.
id
Type: String • Cardinality: ONE
OpenAIRE identifier of the node in the graph.
"id": "10|doajarticles::022409068174087a003647ff46070f7f"
type
Type: String • Cardinality: ONE
Graph node type.
"type": "datasource"
The RelType object
The RelType data type models the semantic of the relationship among two nodes.
type
Type: String • Cardinality: ONE
Relation category, e.g. affiliation, citation, see table Relation typologies.
"name": "provides"
name
Type: String • Cardinality: ONE
Further specifies the relation semantic, indicating the relation direction, e.g. Cites, isCitedBy.
"type": "provision"
Relationship types
The following table lists all the possible relation semantics found in the graph dump.
Note: the labels used to specify the semantic of the relationships are (for the large) inherited from the DataCite metadata kernel, which provides a description for them.
| # | Source entity type | Target entity type | Relation type | Relation name | Inverse relation name |
|---|---|---|---|---|---|
| 1 | Project | Result | outcome | produces | isProducedBy |
| 2 | Project | Organization | participation | hasParticipant | isParticipant |
| 3 | Project | Community | relationship | isRelatedTo | isRelatedTo |
| 4 | Result | Result | similarity | isAmongTopNSimilarDocuments | HasAmongTopNSimilarDocuments |
| 5 | Result | Result | supplement | isSupplementTo | isSupplementedBy |
| 6 | Result | Result | relationship | isRelatedTo | isRelatedTo |
| 7 | Result | Result | relationship | IsPartOf | HasPart |
| 8 | Result | Result | relationship | IsDocumentedBy | Documents |
| 9 | Result | Result | relationship | IsObsoletedBy | Obsoletes |
| 10 | Result | Result | relationship | IsSourceOf | IsDerivedFrom |
| 11 | Result | Result | relationship | IsCompiledBy | Compiles |
| 12 | Result | Result | relationship | IsRequiredBy | Requires |
| 13 | Result | Result | citation | IsCitedBy | Cites |
| 14 | Result | Result | relationship | IsReferencedBy | References |
| 15 | Result | Result | relationship | IsReviewedBy | Reviews |
| 16 | Result | Result | relationship | IsOriginalFormOf | IsVariantFormOf |
| 17 | Result | Result | relationship | IsVersionOf | HasVersion |
| 18 | Result | Result | relationship | IsIdenticalTo | IsIdenticalTo |
| 19 | Result | Result | relationship | IsPreviousVersionOf | IsNewVersionOf |
| 20 | Result | Result | relationship | IsContinuedBy | Continues |
| 21 | Result | Result | relationship | IsDescribedBy | Describes |
| 22 | Result | Organization | affiliation | hasAuthorInstitution | isAuthorInstitutionOf |
| 23 | Result | Data source | provision | isHostedBy | hosts |
| 24 | Result | Data source | provision | isProvidedBy | provides |
| 25 | Result | Community | relationship | isRelatedTo | isRelatedTo |
| 26 | Organization | Community | relationship | isRelatedTo | isRelatedTo |
| 27 | Data source | Community | relationship | isRelatedTo | isRelatedTo |
| 28 | Data source | Organization | provision | isProvidedBy | provides |