Add rmsle metric and reg:squaredlogerror objective (#4541)
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@@ -24,8 +24,9 @@ private[spark] trait LearningTaskParams extends Params {
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/**
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* Specify the learning task and the corresponding learning objective.
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* options: reg:squarederror, reg:logistic, binary:logistic, binary:logitraw, count:poisson,
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* multi:softmax, multi:softprob, rank:pairwise, reg:gamma. default: reg:squarederror
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* options: reg:squarederror, reg:squaredlogerror, reg:logistic, binary:logistic, binary:logitraw,
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* count:poisson, multi:softmax, multi:softprob, rank:pairwise, reg:gamma.
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* default: reg:squarederror
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*/
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final val objective = new Param[String](this, "objective", "objective function used for " +
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s"training, options: {${LearningTaskParams.supportedObjective.mkString(",")}",
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@@ -56,7 +57,7 @@ private[spark] trait LearningTaskParams extends Params {
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/**
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* evaluation metrics for validation data, a default metric will be assigned according to
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* objective(rmse for regression, and error for classification, mean average precision for
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* ranking). options: rmse, mae, logloss, error, merror, mlogloss, auc, aucpr, ndcg, map,
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* ranking). options: rmse, rmsle, mae, logloss, error, merror, mlogloss, auc, aucpr, ndcg, map,
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* gamma-deviance
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*/
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final val evalMetric = new Param[String](this, "evalMetric", "evaluation metrics for " +
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@@ -106,14 +107,14 @@ private[spark] trait LearningTaskParams extends Params {
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private[spark] object LearningTaskParams {
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val supportedObjective = HashSet("reg:linear", "reg:squarederror", "reg:logistic",
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"binary:logistic", "binary:logitraw", "count:poisson", "multi:softmax", "multi:softprob",
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"rank:pairwise", "rank:ndcg", "rank:map", "reg:gamma", "reg:tweedie")
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"reg:squaredlogerror", "binary:logistic", "binary:logitraw", "count:poisson", "multi:softmax",
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"multi:softprob", "rank:pairwise", "rank:ndcg", "rank:map", "reg:gamma", "reg:tweedie")
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val supportedObjectiveType = HashSet("regression", "classification")
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val evalMetricsToMaximize = HashSet("auc", "aucpr", "ndcg", "map")
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val evalMetricsToMinimize = HashSet("rmse", "mae", "logloss", "error", "merror",
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val evalMetricsToMinimize = HashSet("rmse", "rmsle", "mae", "logloss", "error", "merror",
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"mlogloss", "gamma-deviance")
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val supportedEvalMetrics = evalMetricsToMaximize union evalMetricsToMinimize
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