questions

1. 


val vector = data.map{line=>
  val record = line.split("::")
 match{case Array(user,product,rate,timestamp)=>
      (timestamp.toInt % 10 , Rating(user.toInt,product.toInt,rate.toDouble))

  }
  
}

ALS.train(vector.values,irank,num,ilambda)

 

invalid because  vector is RDD[Unit]

val vector = data.map{line=>
  val record = line.split("::")
 match{case Array(user,product,rate,timestamp)=>
      (timestamp.toInt % 10 , Rating(user.toInt,product.toInt,rate.toDouble))

  }
  (record._1,record._2)
}

ALS.train(vector.values,irank,num,ilambda)

valid!