More Information about number of simulations

[GoogleCodeExporter]

I just need more information about the limitation for the number of simulations 
which is 200 for version 1-31. What is it excatly?

Original issue reported on code.google.com by valmlo...@gmail.com on 21 May 2012 at 10:22

[GoogleCodeExporter]

You can use the "wndchrm test" functionality to cross-validate a classifier 
that you built using the "wndchrm train" command. You can have wndchrm run up 
to 200 train/test splits or what we call "simulations."

You would use a command like `wndchrm test -n200 my_classifier.fit 
output_report.html`, where "my_classifier.fit is a file you generated with 
wndchrm train, and output_report.html is the output of the wndchrm test 
cross-validation.

Opening the output_report.html, you will see the results of 200 independent 
train/test splits, that is, dividing the images within the classifier 
"my_classifier.fit" randomly 200 times into two pools: a training set (75% of 
the images) and a test set (remaining 25% of images). Classification accuracies 
are generated for each split. The standard deviation of the classification 
accuracies across splits is a measure of how homogenous/heterogeneous the 
morphology is in the images within "my_classifier.fit"

Does this answer your question?

Original comment by christop...@nih.gov on 25 May 2012 at 7:56

[GoogleCodeExporter]

Original comment by christop...@nih.gov on 10 Jun 2012 at 6:15

• Changed state: Done