Betweenness Centrality (2.2.4)

**Table 1** parameters parameter description
Parameter	Mandatory	Description	Type	Value Range	Default Value
directed	No	Whether an edge is directed	Boolean	The value can be true or false	true
weight	No	Weight of an edge	String	The value can be an empty string. If this parameter is left blank, the weight and distance of this edge are 1 by default. You can set this parameter to a property of the edge, and the property value will be the weight. If the edge does not have the specified property, the weight is 1 by default. NOTE: The weight of an edge must be greater than 0.	-
seeds	No	Vertex ID	String	If the graph is large, precise betweenness calculation can be slow. You can set seeds to the sampling vertices for approximate calculation. The more seeds vertices, the closer results to the precise calculation. The number of vertices cannot be greater than 100,000.	-
k	No	Number of samples	Integer	If the graph is large, precise betweenness calculation can be slow. You can set k to randomly select k sampling vertices from the graph. The larger the value, the closer results to the precise calculation. The value cannot be greater than 100,000.	-

**Table 2** response_data parameter description
Parameter	Type	Description
betweenness	List	Betweenness value of each node. The format is [{vertexId: betweennessValue}, ...]. vertexId is of the string type. betweennessValue is of the double type.