How do you write on the Log file?

Could you please provide more details on how do you write the mean, median, etc of the predictions on the log file? If there is something wrong we see error messages in it, but how do you output a log file with a successful run? It typically says "No Log" for successful runs.

Created by Carlo Piermarocchi piermaro
The log captures STDERR **and** STDOUT. Depending on the language you use there are different ways to print to STDOUT. I believe cat() works in R for example.

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Could you please provide more details on how do you write the mean, median, etc of the predictions on the log file? If there is something wrong we see error messages in it, but how do you output a log file with a successful run? It typically says "No Log" for successful runs.

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