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List:       wekalist
Subject:    Re: [Wekalist] MultiFilter
From:       Eibe Frank <eibe () waikato ! ac ! nz>
Date:       2014-11-28 7:26:09
Message-ID: 5C663AD5-2C03-4910-90B6-E183E5FF09D7 () waikato ! ac ! nz
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If you use the FilteredClassifier, set the class index for RemoveMisclassified to -1.

Cheers,
Eibe

> On 28 Nov 2014, at 16:10, double d s <doubled_s2000@yahoo.com> wrote:
> 
> Hi Eibe,
> 
> Thanks for the advice. Are the standard parameters of RemoveMisclassified filter \
> (except base classifier) enough to guarantee well performance for this filter? What \
> will be happened technically , for instance, with modifying the classIndex \
> parameter to be 1 instead of -1. 
> Thank you.
> Sandler
> 
> From:"Eibe Frank" <eibe@waikato.ac.nz>
> Date:Fri, 28 Nov, 2014 at 3:29 AM
> Subject:Re: [Wekalist] MultiFilter
> 
> You don't need AddClassification, so you don't need the MultiFilter. \
> RemoveMisclassified identifies misclassified instances using the base learner you \
> specify. 
> Cheers,
> Eibe
> 
> > On 28 Nov 2014, at 03:02, double d s <doubled_s2000@yahoo.com> wrote:
> > 
> > Hi,
> > 
> > My dataset is a combination of nominal attributes and nominal class.
> > 
> > In the classify tab, I want to use MultiFilter as a parameter of \
> > weka.classifiers.meta.FilteredClassifier to find and remove the outliers form \
> > training set. To be more precise, in the "MultiFilter" I want to add two filters. \
> > First one is "AddClassification" to find those outliers. Second one is \
> > "RemoveMisclassified" to remove those outliers. 
> > My questions:
> > 1-Is this the correct way to find and remove the outliers form the training set \
> > using MultiFilter where Bagging classifier is applied as a base classifier in \
> > both filters? 2- If this is the correct manner, is there any adjustment that \
> > should be done to the RemoveMisclassified filter to detect the exact outliers \
> > that have been resulted by  AddClassification filter?
> > 
> > Thanks.
> > Sandler
> 
> > 
> > 
> > 
> > 
> > 
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