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multiclass documentation

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El Potaeto 2015-05-01 09:48:07 +02:00
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R-package/R/xgb.train.R
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@ -42,8 +42,9 @@
#' \item \code{reg:logistic} logistic regression. #' \item \code{reg:logistic} logistic regression.
#' \item \code{binary:logistic} logistic regression for binary classification. Output probability. #' \item \code{binary:logistic} logistic regression for binary classification. Output probability.
#' \item \code{binary:logitraw} logistic regression for binary classification, output score before logistic transformation. #' \item \code{binary:logitraw} logistic regression for binary classification, output score before logistic transformation.
#' \item \code{multi:softmax} set xgboost to do multiclass classification using the softmax objective, you also need to set num_class(number of classes). #' \item \code{num_class} set the number of classes. To use only with multiclass objectives.
#' \item \code{multi:softprob} same as softmax, but output a vector of ndata * nclass, which can be further reshaped to ndata, nclass matrix. The result contains predicted probability of each data point belonging to each class. #' \item \code{multi:softmax} set xgboost to do multiclass classification using the softmax objective. Class is a number and should be from 0 \code{tonum_class}
#' \item \code{multi:softprob} same as softmax, but output a vector of ndata * nclass, which can be further reshaped to ndata, nclass matrix. The result contains predicted probabilities of each data point belonging to each class.
#' \item \code{rank:pairwise} set xgboost to do ranking task by minimizing the pairwise loss. #' \item \code{rank:pairwise} set xgboost to do ranking task by minimizing the pairwise loss.
#' } #' }
#' \item \code{base_score} the initial prediction score of all instances, global bias. Default: 0.5 #' \item \code{base_score} the initial prediction score of all instances, global bias. Default: 0.5

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R-package/man/xgb.train.Rd
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% Generated by roxygen2 (4.1.0): do not edit by hand % Generated by roxygen2 (4.1.1): do not edit by hand
% Please edit documentation in R/xgb.train.R % Please edit documentation in R/xgb.train.R
\name{xgb.train} \name{xgb.train}
\alias{xgb.train} \alias{xgb.train}
@ -48,8 +48,9 @@ xgb.train(params = list(), data, nrounds, watchlist = list(), obj = NULL,
\item \code{reg:logistic} logistic regression. \item \code{reg:logistic} logistic regression.
\item \code{binary:logistic} logistic regression for binary classification. Output probability. \item \code{binary:logistic} logistic regression for binary classification. Output probability.
\item \code{binary:logitraw} logistic regression for binary classification, output score before logistic transformation. \item \code{binary:logitraw} logistic regression for binary classification, output score before logistic transformation.
\item \code{multi:softmax} set xgboost to do multiclass classification using the softmax objective, you also need to set num_class(number of classes). \item \code{num_class} set the number of classes. To use only with multiclass objectives.
\item \code{multi:softprob} same as softmax, but output a vector of ndata * nclass, which can be further reshaped to ndata, nclass matrix. The result contains predicted probability of each data point belonging to each class. \item \code{multi:softmax} set xgboost to do multiclass classification using the softmax objective. Class is a number and should be from 0 \code{tonum_class}
\item \code{multi:softprob} same as softmax, but output a vector of ndata * nclass, which can be further reshaped to ndata, nclass matrix. The result contains predicted probabilities of each data point belonging to each class.
\item \code{rank:pairwise} set xgboost to do ranking task by minimizing the pairwise loss. \item \code{rank:pairwise} set xgboost to do ranking task by minimizing the pairwise loss.
} }
\item \code{base_score} the initial prediction score of all instances, global bias. Default: 0.5 \item \code{base_score} the initial prediction score of all instances, global bias. Default: 0.5