類型不匹配flink圖社區

Question

我正在嘗試執行一個非常簡單的代碼來進行社區檢測，但是它返回一個錯誤：

import org.apache.flink.graph.library.CommunityDetection
import org.apache.flink.graph._
import org.apache.flink.graph.scala.Graph
import java.lang.Long
import java.lang.Double
import org.apache.flink.api.scala._

val env = ExecutionEnvironment.getExecutionEnvironment
val vertices = Seq(new Vertex[Long, String](1L, "foo"), new Vertex[Long, String](2L, "bar"))
val edges = Seq(new Edge[Long, String](1L, 2L, "foobar"))

val graph = Graph.fromCollection(vertices, edges, env)
val updatedGraph = graph.mapVertices(v => v.getValue + 1)
val resultGraph = graph.run(new CommunityDetection[Long](30, 0.5))


                            ^

Answer 1

CommunityDetection算法期望Graph具有Long ID和頂點值以及Double權重。 在代碼中，為頂點和邊定義String值。 請查看Gelly文檔以獲取更多詳細的使用信息。