FHIRsmith: StructureDefinition/StructureDefinition-KGEdge.json

FHIR IG analytics

Package	smart.who.int.base
Resource Type	StructureDefinition
Id	StructureDefinition-KGEdge.json
FHIR Version	R4
Source	https://build.fhir.org/ig/litlfred/smart-base/StructureDefinition-KGEdge.html
URL	http://smart.who.int/base/StructureDefinition/KGEdge
Version	0.3.0
Status	active
Date	2026-10-06T14:15:03+00:00
Name	KGEdge
Title	Knowledge graph: edge
Authority	who
Description	One reified statement: a predicate from a source node to a target node, with its derivation and evidence.
Type	http://smart.who.int/base/StructureDefinition/KGEdge
Kind	logical

Resources that use this resource

StructureDefinition
smart.who.int.base#current	KGGraphDocument	Knowledge graph L1: graph document

Resources that this resource uses

StructureDefinition
smart.who.int.base#current	KGEvidenceLocation	Knowledge graph: evidence location

ValueSet
smart.who.int.base#current	KGDerivationVS	Knowledge graph: derivation
smart.who.int.base#current	KGL1PredicatesVS	Knowledge graph L1: predicates
smart.who.int.base#current	KGResolutionStatusVS	Knowledge graph: resolution status

Narrative

Note: links and images are rebased to the (stated) source

English

Generated Narrative: StructureDefinition KGEdge

Name	Card.	Type	Description & Constraints
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate Binding: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation Binding: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status Binding: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
Documentation for this format

French

Narratif généré : DéfinitionStructure KGEdge

Nom	Card.	Type	Description et contraintes
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate Binding: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation Binding: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status Binding: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
Documentation pour ce format

Arabic

السرد المُنشأ: StructureDefinition KGEdge

الاسم	البطاقة.	النوع	الوصف والقيود
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate التجليد: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation التجليد: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status التجليد: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
الوثائق الخاصة بهذا التنسيق

Chinese

Generated Narrative: 结构定义 KGEdge

Name	Card.	Type	Description & Constraints
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate Binding: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation Binding: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status Binding: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
Documentation for this format

Russian

Сгенерированный нарратив: StructureDefinition KGEdge

Наименование	Карта.	Тип	Описание и ограничения
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate Привязка: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation Привязка: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status Привязка: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
Документация для этого формата

Spanish

Generated Narrative: DefinicionDeEstructura KGEdge

Name	Card.	Type	Description & Constraints
KGEdge	0..*	Base	Knowledge graph: edge
type	1..1	code	Type
predicate	1..1	code	Predicate Binding: Knowledge graph L1: predicates (required)
source	1..1	string	Source
target	1..1	string	Target
qualifier	0..1	string	Qualifier
derivation	1..1	code	Derivation Binding: Knowledge graph: derivation (required)
note	0..1	string	Note
evidence	0..1	KGEvidenceLocation	Evidence
flagRef	0..1	string	Flag
skill	0..1	string	Skill
properties	0..1	BackboneElement	Properties
resolutionStatus	0..1	code	Resolution status Binding: Knowledge graph: resolution status (required)
matchedOn	0..1	string	Matched on
Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "KGEdge",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "url": "http://smart.who.int/base/StructureDefinition/KGEdge",
  "version": "0.3.0",
  "name": "KGEdge",
  "title": "Knowledge graph: edge",
  "status": "active",
  "date": "2026-10-06T14:15:03+00:00",
  "publisher": "WHO",
  "contact": [
    {
      "name": "WHO",
      "telecom": [
        {
          "system": "url",
          "value": "http://who.int"
        }
      ]
    }
  ],
  "description": "One reified statement: a predicate from a source node to a target node, with its derivation and evidence.",
  "fhirVersion": "4.0.1",
  "kind": "logical",
  "abstract": false,
  "type": "http://smart.who.int/base/StructureDefinition/KGEdge",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Base",
  "derivation": "specialization",
  "snapshot": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
        "valueString": "4.0.1"
      }
    ],
    "element": [
      {
        "id": "KGEdge",
        "path": "KGEdge",
        "short": "Knowledge graph: edge",
        "definition": "One reified statement: a predicate from a source node to a target node, with its derivation and evidence.",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Base",
          "min": 0,
          "max": "*"
        },
        "isModifier": false
      },
      {
        "id": "KGEdge.type",
        "path": "KGEdge.type",
        "short": "Type",
        "definition": "Always Statement (rdf:Statement).",
        "min": 1,
        "max": "1",
        "base": {
          "path": "KGEdge.type",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ]
      },
      {
        "id": "KGEdge.predicate",
        "path": "KGEdge.predicate",
        "short": "Predicate",
        "definition": "The predicate; the layer's edge table says which (source, target) pairs it licenses.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "KGEdge.predicate",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGL1PredicatesVS"
        }
      },
      {
        "id": "KGEdge.source",
        "path": "KGEdge.source",
        "short": "Source",
        "definition": "IRI of the source node.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "KGEdge.source",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.target",
        "path": "KGEdge.target",
        "short": "Target",
        "definition": "IRI of the target node.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "KGEdge.target",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.qualifier",
        "path": "KGEdge.qualifier",
        "short": "Qualifier",
        "definition": "A label on the relationship.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.qualifier",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.derivation",
        "path": "KGEdge.derivation",
        "short": "Derivation",
        "definition": "derived | inferred | decided.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "KGEdge.derivation",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGDerivationVS"
        }
      },
      {
        "id": "KGEdge.note",
        "path": "KGEdge.note",
        "short": "Note",
        "definition": "Why it is what it is. Required unless derived.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.note",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.evidence",
        "path": "KGEdge.evidence",
        "short": "Evidence",
        "definition": "Where it came from. Required unless derived.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.evidence",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "http://smart.who.int/base/StructureDefinition/KGEvidenceLocation"
          }
        ]
      },
      {
        "id": "KGEdge.flagRef",
        "path": "KGEdge.flagRef",
        "short": "Flag",
        "definition": "Id of a flag raised while extracting this edge.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.flagRef",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.skill",
        "path": "KGEdge.skill",
        "short": "Skill",
        "definition": "Skill id that produced this edge.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.skill",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.properties",
        "path": "KGEdge.properties",
        "short": "Properties",
        "definition": "Fields of the statement itself.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.properties",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "BackboneElement"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ]
      },
      {
        "id": "KGEdge.properties.id",
        "path": "KGEdge.properties.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "KGEdge.properties.extension",
        "path": "KGEdge.properties.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "KGEdge.properties.modifierExtension",
        "path": "KGEdge.properties.modifierExtension",
        "short": "Extensions that cannot be ignored even if unrecognized",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "requirements": "Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension).",
        "alias": [
          "extensions",
          "user content",
          "modifiers"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "BackboneElement.modifierExtension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": true,
        "isModifierReason": "Modifier extensions are expected to modify the meaning or interpretation of the element that contains them",
        "isSummary": true,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "KGEdge.properties.resolutionStatus",
        "path": "KGEdge.properties.resolutionStatus",
        "short": "Resolution status",
        "definition": "For a cross-format join: unresolved | resolved | ambiguous.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.properties.resolutionStatus",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGResolutionStatusVS"
        }
      },
      {
        "id": "KGEdge.properties.matchedOn",
        "path": "KGEdge.properties.matchedOn",
        "short": "Matched on",
        "definition": "What the join was matched on.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "KGEdge.properties.matchedOn",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "KGEdge",
        "path": "KGEdge",
        "short": "Knowledge graph: edge",
        "definition": "One reified statement: a predicate from a source node to a target node, with its derivation and evidence."
      },
      {
        "id": "KGEdge.type",
        "path": "KGEdge.type",
        "short": "Type",
        "definition": "Always Statement (rdf:Statement).",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ]
      },
      {
        "id": "KGEdge.predicate",
        "path": "KGEdge.predicate",
        "short": "Predicate",
        "definition": "The predicate; the layer's edge table says which (source, target) pairs it licenses.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGL1PredicatesVS"
        }
      },
      {
        "id": "KGEdge.source",
        "path": "KGEdge.source",
        "short": "Source",
        "definition": "IRI of the source node.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.target",
        "path": "KGEdge.target",
        "short": "Target",
        "definition": "IRI of the target node.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.qualifier",
        "path": "KGEdge.qualifier",
        "short": "Qualifier",
        "definition": "A label on the relationship.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.derivation",
        "path": "KGEdge.derivation",
        "short": "Derivation",
        "definition": "derived | inferred | decided.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGDerivationVS"
        }
      },
      {
        "id": "KGEdge.note",
        "path": "KGEdge.note",
        "short": "Note",
        "definition": "Why it is what it is. Required unless derived.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.evidence",
        "path": "KGEdge.evidence",
        "short": "Evidence",
        "definition": "Where it came from. Required unless derived.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "http://smart.who.int/base/StructureDefinition/KGEvidenceLocation"
          }
        ]
      },
      {
        "id": "KGEdge.flagRef",
        "path": "KGEdge.flagRef",
        "short": "Flag",
        "definition": "Id of a flag raised while extracting this edge.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.skill",
        "path": "KGEdge.skill",
        "short": "Skill",
        "definition": "Skill id that produced this edge.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "KGEdge.properties",
        "path": "KGEdge.properties",
        "short": "Properties",
        "definition": "Fields of the statement itself.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "BackboneElement"
          }
        ]
      },
      {
        "id": "KGEdge.properties.resolutionStatus",
        "path": "KGEdge.properties.resolutionStatus",
        "short": "Resolution status",
        "definition": "For a cross-format join: unresolved | resolved | ambiguous.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "http://smart.who.int/base/ValueSet/KGResolutionStatusVS"
        }
      },
      {
        "id": "KGEdge.properties.matchedOn",
        "path": "KGEdge.properties.matchedOn",
        "short": "Matched on",
        "definition": "What the join was matched on.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}