A.ZookeeperB.ChubbyC.RPCD.Socket
A.評分矩陣(userXitem)A B.用戶特征矩陣U C.物品特征矩陣M D.U與M’的乘積A_k矩陣
A.val temp=graphhdfs.mapVertices((x1,x2)=>x2.toInt*3).vertices.take(10) B.val temp=graphhdfs.mapEdges((x1,x2)=>x2.toInt*3).vertices.take(10) C.val temp=graphhdfs.mapVertices(x=>x._2.toInt*3).vertices.take(10) D.val temp=graphhdfs.map(x=>x._1.toInt*3).vertices.take(10)