b4d97d3cb8
* [R] better argument check in xgb.DMatrix; fixes #1480 * [R] showsd was a dummy; fixes #2044 * [R] better categorical encoding explanation in vignette; fixes #1989 * [R] new roxygen version docs update
30 lines
914 B
R
30 lines
914 B
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/callbacks.R
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\name{cb.print.evaluation}
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\alias{cb.print.evaluation}
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\title{Callback closure for printing the result of evaluation}
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\usage{
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cb.print.evaluation(period = 1, showsd = TRUE)
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}
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\arguments{
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\item{period}{results would be printed every number of periods}
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\item{showsd}{whether standard deviations should be printed (when available)}
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}
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\description{
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Callback closure for printing the result of evaluation
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}
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\details{
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The callback function prints the result of evaluation at every \code{period} iterations.
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The initial and the last iteration's evaluations are always printed.
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Callback function expects the following values to be set in its calling frame:
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\code{bst_evaluation} (also \code{bst_evaluation_err} when available),
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\code{iteration},
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\code{begin_iteration},
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\code{end_iteration}.
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}
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\seealso{
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\code{\link{callbacks}}
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}
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