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Bug 2374 - update the utilities/private/randomseed function
| Status | CLOSED FIXED |
| Reported | 2013-11-13 13:50:00 +0100 |
| Modified | 2014-01-15 14:47:52 +0100 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Windows |
| Importance: | P3 normal |
| Assigned to: | Jan-Mathijs Schoffelen |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | |
| See also: |
Robert Oostenveld - 2013-11-13 13:50:11 +0100
right now it deals inconsistently with matlab versions and scalar/numeric/char inputs
Jan-Mathijs Schoffelen - 2013-11-14 09:27:49 +0100
bash-4.1$ svn commit -m "enhancement - made randomseed internally more consistent and allow for cfg.randomseed = 'yes'/'no'" utilities/private/randomseed.m ft_statistics_montecarlo.m Sending ft_statistics_montecarlo.m Sending utilities/private/randomseed.m Transmitting file data .. Committed revision 8775.
Robert Oostenveld - 2013-11-14 11:58:46 +0100
I see on http://fieldtrip.fcdonders.nl/development/dashboard and in http://fieldtrip.fcdonders.nl/development/dashboard/r8776/test_ft_componentanalysis that test_ft_componentanalysis is now randomly failing/succeeding on subsequent executions. I don't know whether it is related to this change, but could you perhaps check?
Jan-Mathijs Schoffelen - 2013-11-14 12:05:32 +0100
Het zou ook te mooi zijn geweest om waar te zijn. Voor info: welke matlab versie?
Robert Oostenveld - 2013-11-14 12:11:37 +0100
(In reply to comment #3) matlab2012b on the cluster.
Jan-Mathijs Schoffelen - 2013-11-14 12:48:24 +0100
hehehe, and we're just trying to do a pca on the data. What seems to happen (more or less at random) is that the polarity of the components is flipped. Does svd/eig have a random behavior in this? and the question then would be: why did this not show up before? one way to ensure a no-fail here would be to feed the random number generator with the random seed that was used to construct the data on disk
Jan-Mathijs Schoffelen - 2013-11-14 12:57:53 +0100
oh, but I see that the identical function actually checks for that, but that for the itab153 data the tolerance threshold of 1e-7 is exceeded.
Jan-Mathijs Schoffelen - 2013-11-24 12:02:56 +0100
test function runs through on matlab2011b, but not on matlab2012b the testdata stored on disk seems to have been created with matlab2013a