feat:添加ros回归模型

recommend-model-produce/src/main/scala/com/tzld/piaoquan/recommend/model/recsys_01_ros_reg_xgb_train.scala

@@ -157,12 +157,11 @@ object recsys_01_ros_reg_xgb_train {
       }.map {
         case (vid, (all, sumScore, sumScore2)) =>
           (vid, (all, sumScore, sumScore / all, sumScore2, sumScore2 / all))
-      }.
-      collect().
-      sortBy(_._1).
-      map(_.productIterator).
-      mkString("\t").
-      foreach(println)
+      }
+      .collect()
+      .sortBy(_._1)
+      .map(_.productIterator.mkString("\t"))
+      .foreach(println)
 
   }