Matlab tasks
Moderator: Statistisches Maschinelles Lernen
Matlab tasks
Which toolboxes can we use? E.g. do I have to recode normpdf(...) or mvnpdf(...)?
Nichts ist wie es scheint!
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Zuletzt geändert von xAx am 14. Mär 2009 16:17, insgesamt 99-mal geändert.
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Zuletzt geändert von xAx am 14. Mär 2009 16:17, insgesamt 99-mal geändert.
Re: Matlab tasks
Ich glaube "statistic" toolbox
Re: Matlab tasks
For problem 2 the use of the statistics toolbox is fine. I.e. you may use mvnpdf (as is also mentioned in the problem text).
For problem 4 you may also use mvnpdf and normpdf, but you should code the classifier and the parameter estimation procedure by hand.
Best regards,
Stefan Roth
For problem 4 you may also use mvnpdf and normpdf, but you should code the classifier and the parameter estimation procedure by hand.
Best regards,
Stefan Roth
Re: Matlab tasks
what is the exact meaning of 'by hand'? Is it allowed to use the known analytical solution for the parameter estimation for univariate (lecture) / multivariate (bishop book) gaussian distributions (Qi said okay to this last week!) and use the functions std, mean and cov from Matlab to do this calculations?
Re: Matlab tasks
Yes, you should use the closed form analytical solution. And it is fine to use std, mean, cov, etc.
What I mean by "by hand" is that you are not allowed to use the NaiveBayes class from the statistics toolbox, the mle function, or similar advanced functions.
I hope that clarifies it,
Stefan Roth
What I mean by "by hand" is that you are not allowed to use the NaiveBayes class from the statistics toolbox, the mle function, or similar advanced functions.
I hope that clarifies it,
Stefan Roth