The Decoding Toolbox - Leave One Beta Out as Cross-Validation

Software Support
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1

Hi!

I want to use The Decoding Toolbox for my MVPA analysis. I have a total of 160 beta files per condition and would like to leave one beta out (6 runs per participant; 160 beta files each run). I know that the default mode of TDT cross-validation is Leave-One-Run-Out when using “cfg.design = make_design_cv(cfg);”, but do you think it’s possible to change this?

Thanks!

2

Hi ndr, yes indeed that is possible. Check the link below. TDT: Decoding having only one run - #6 by Tamer_Gezici

You will need to modify your cfg.files.chunk to do that, my example is not entirely suitable for your case. You’ll need to modify things based on your study/design.

Currently, to me it is unclear if you want to leave one beta and classify within a run, or across runs as well.

Hope this helps.