[otb-users] Train vector classifier (libsvm) may have a bug in OTB 6.6.0 ?

[Etienne MAHE]

Hi,

Since OTB 6.6.0-Win64 release, the app Train Vector Classifier seems to
have a bug when running with libSVM classifier and especially when options
"Paramaters optimization" and "Probability estimation" are enabled.

With previous version (6.4.0), the algorithm works properly (it displays
the confusion matrix and performance index) but since last version 6.6.0,
the optimization process runs infinitely without stopping and without
displaying performance index. I suspect an issue because if I disable those
options, the app properly works.

But I really need those options to classify my orthotoplans though an
automated processings chain. Awaiting a fix, I continue to use OTB 6.4.0.


Sincerely,
Etienne.
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[Poughon Victor]

Hi Etienne,

Thank you for the bug report. I have added it to our issue tracker and we will look at it ASAP.
https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/issues/1660


Best,

Victor Poughon
________________________________
De : otb-***@googlegroups.com [otb-***@googlegroups.com] de la part de Etienne MAHE [***@gmail.com]
Envoyé : mercredi 4 juillet 2018 11:42
À : otb-users
Objet : [otb-users] Train vector classifier (libsvm) may have a bug in OTB 6.6.0 ?

Hi,

Since OTB 6.6.0-Win64 release, the app Train Vector Classifier seems to have a bug when running with libSVM classifier and especially when options "Paramaters optimization" and "Probability estimation" are enabled.

With previous version (6.4.0), the algorithm works properly (it displays the confusion matrix and performance index) but since last version 6.6.0, the optimization process runs infinitely without stopping and without displaying performance index. I suspect an issue because if I disable those options, the app properly works.

But I really need those options to classify my orthotoplans though an automated processings chain. Awaiting a fix, I continue to use OTB 6.4.0.

Sincerely,
Etienne.

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[REGIMBEAU Antoine]

Hi Etienne,
I had a look to the problem you report but I could not reproduce it.
Could you provide more information on what you've done? Eg : data
type, size, command line that is bugging, working command line, time
of execution, OS, computer spec....

Thanks
Antoine

Post by Etienne MAHE
Hi,
Since OTB 6.6.0-Win64 release, the app Train Vector Classifier seems to
have a bug when running with libSVM classifier and especially when options
"Paramaters optimization" and "Probability estimation" are enabled.
With previous version (6.4.0), the algorithm works properly (it displays
the confusion matrix and performance index) but since last version 6.6.0,
the optimization process runs infinitely without stopping and without
displaying performance index. I suspect an issue because if I disable those
options, the app properly works.
But I really need those options to classify my orthotoplans though an
automated processings chain. Awaiting a fix, I continue to use OTB 6.4.0.
Sincerely,
Etienne.
--
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http://www.orfeo-toolbox.org/FAQ.html
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