CIMKnowledgeGraphCentralityConfiguration Class
In This Topic
Represents the Centrality computation options for a Knowledge Graph.
Several measures of centrality are supported:
Degree, Indegree, Outdegree, PageRank, Eigenvector, Coreness, Betweenness, Closeness and Harmonic.
These measures fall in two broad categories:
degree based measures are Degree, Indegree, Outdegree, PageRank, Eigenvector and Coreness
while shortest paths based measures are Betweenness, Closeness and Harmonic.
The "importance" relationship weight is taken into account in degree based measures:
a relationship with higher importance will increase the centrality scores of nearby related entities.
The "cost" relationship weight is taken into account in shortest paths based measures:
a relationship with higher cost will decrease the centrality scores of nearby related entities.
Object Model
Syntax
Public Class CIMKnowledgeGraphCentralityConfiguration Inherits CIMObject Implements System.ComponentModel.INotifyPropertyChanged, System.Xml.Serialization.IXmlSerializable
public class CIMKnowledgeGraphCentralityConfiguration : CIMObject, System.ComponentModel.INotifyPropertyChanged, System.Xml.Serialization.IXmlSerializable
Example
Compute Centrality Using Defaults
{
//using ArcGIS.Core.Data.Knowledge.Extensions;
await QueuedTask.Run(() =>
{
//using(var kg = ....) {
//take default settings...
//undirected relationship interpretation
//use default relationship importance = 0
//use default relationship cost = 0
//use default Multiedge factor = 0
//no normalization
var kg_config = new CIMKnowledgeGraphCentralityConfiguration();
//include all entities from the kg in the subgraph
//(no filters)
var kg_subgraph = new CIMKnowledgeGraphSubGraph();
//include all centrality measures
CentralityMeasure[] measures = [
CentralityMeasure.Degree,
CentralityMeasure.InDegree,
CentralityMeasure.OutDegree,
CentralityMeasure.Coreness,//Coreness only wks w/ undirected relates
CentralityMeasure.Betweenness,
CentralityMeasure.Closeness,
CentralityMeasure.Harmonic,
CentralityMeasure.Eigenvector,
CentralityMeasure.PageRank
];
//compute centrality
var kg_centrality_results = kg.ComputeCentrality(
kg_config, kg_subgraph, measures);
//TODO - process results
});
}
Inheritance Hierarchy
System.Object
ArcGIS.Core.CIM.CIMObject
ArcGIS.Core.CIM.CIMKnowledgeGraphCentralityConfiguration
Requirements
Target Platforms: Windows 11 Home, Pro, Enterprise (64 bit)
ArcGIS Pro version: 3.6 or higher.
See Also