# cb.print.evaluation

0th

Percentile

##### Callback closure for printing the result of evaluation

Callback closure for printing the result of evaluation

##### Usage
cb.print.evaluation(period = 1, showsd = TRUE)
##### Arguments
period

results would be printed every number of periods

showsd

whether standard deviations should be printed (when available)

##### Details

The callback function prints the result of evaluation at every period iterations. The initial and the last iteration's evaluations are always printed.

Callback function expects the following values to be set in its calling frame: bst_evaluation (also bst_evaluation_err when available), iteration, begin_iteration, end_iteration.

callbacks