Hi, note first there are 2 implementations of random forests now available in OTB since release 5.8. One from openCV and the other one from the shark machine learning library (which allows parallel training). Both implementations are wrappers around those libraries and you generally have to dig into libraries documentation to find out such information.
Regarding the criteria, I think that both opencv and shark implementations use the Gini criterion (for shark I'm quite sure). Would be glad if someone who know a bit more those implementations can confirm this. Note also that I don't think that we have a way in otb to change this criteria with shark implementation even if there is a way to do this in shark base class. Perhaps something that could be added to the SharkMachineLearningModel in the future. Regards, 2017-03-27 9:46 GMT+02:00 Nafissa Sfaksi <[email protected]>: > Hi, > With the tool TrainClassifier we can put several parameters but is it > possible to see which criteria is used for the method? > I mean the tool use Gini criterion or entropy criterion? > Thanks for reply > Nafissa > > -- > -- > Check the OTB FAQ at > http://www.orfeo-toolbox.org/FAQ.html > > You received this message because you are subscribed to the Google > Groups "otb-users" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/otb-users?hl=en > --- > You received this message because you are subscribed to the Google Groups > "otb-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Manuel Grizonnet -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
