Update lib version dependencies (for DiagrammeR mainly)
Fix @export tag in each R file (for Roxygen 5, otherwise it doesn't work anymore) Regerate Roxygen doc
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@@ -1,4 +1,4 @@
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% Generated by roxygen2 (4.1.1): do not edit by hand
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% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/xgb.cv.R
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\name{xgb.cv}
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\alias{xgb.cv}
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@@ -40,7 +40,7 @@ value that represents missing value. Sometime a data use 0 or other extreme valu
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\item{showsd}{\code{boolean}, whether show standard deviation of cross validation}
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\item{metrics,}{list of evaluation metrics to be used in corss validation,
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\item{metrics, }{list of evaluation metrics to be used in corss validation,
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when it is not specified, the evaluation metric is chosen according to objective function.
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Possible options are:
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\itemize{
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@@ -51,11 +51,11 @@ value that represents missing value. Sometime a data use 0 or other extreme valu
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\item \code{merror} Exact matching error, used to evaluate multi-class classification
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}}
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\item{obj}{customized objective function. Returns gradient and second order
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\item{obj}{customized objective function. Returns gradient and second order
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gradient with given prediction and dtrain.}
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\item{feval}{custimized evaluation function. Returns
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\code{list(metric='metric-name', value='metric-value')} with given
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\item{feval}{custimized evaluation function. Returns
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\code{list(metric='metric-name', value='metric-value')} with given
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prediction and dtrain.}
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\item{stratified}{\code{boolean} whether sampling of folds should be stratified by the values of labels in \code{data}}
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@@ -67,12 +67,12 @@ If folds are supplied, the nfold and stratified parameters would be ignored.}
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\item{print.every.n}{Print every N progress messages when \code{verbose>0}. Default is 1 which means all messages are printed.}
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\item{early.stop.round}{If \code{NULL}, the early stopping function is not triggered.
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If set to an integer \code{k}, training with a validation set will stop if the performance
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\item{early.stop.round}{If \code{NULL}, the early stopping function is not triggered.
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If set to an integer \code{k}, training with a validation set will stop if the performance
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keeps getting worse consecutively for \code{k} rounds.}
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\item{maximize}{If \code{feval} and \code{early.stop.round} are set, then \code{maximize} must be set as well.
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\code{maximize=TRUE} means the larger the evaluation score the better.}
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\code{maximize=TRUE} means the larger the evaluation score the better.}
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\item{...}{other parameters to pass to \code{params}.}
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}
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@@ -89,9 +89,9 @@ If \code{prediction = FALSE}, just a \code{data.table} with each mean and standa
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The cross valudation function of xgboost
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}
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\details{
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The original sample is randomly partitioned into \code{nfold} equal size subsamples.
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The original sample is randomly partitioned into \code{nfold} equal size subsamples.
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Of the \code{nfold} subsamples, a single subsample is retained as the validation data for testing the model, and the remaining \code{nfold - 1} subsamples are used as training data.
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Of the \code{nfold} subsamples, a single subsample is retained as the validation data for testing the model, and the remaining \code{nfold - 1} subsamples are used as training data.
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The cross-validation process is then repeated \code{nrounds} times, with each of the \code{nfold} subsamples used exactly once as the validation data.
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