[pymvpa] MulticlassClassifier Queries

Yaroslav Halchenko debian at onerussian.com
Wed Jan 27 03:00:04 UTC 2010


no need to wrap LinearCSVMC in multiclass -- libsvm/sg(libsvm) does
1-vs-1 classification internally for multiclass anyways

warning is just about values... just a warning.. no biggie ;-) indeed
shouldn't be there if you don't use MulticlassClassifier

On Tue, 26 Jan 2010, Geethmala wrote:

>    Hi,
>    I have a couple of queries about multiclass classification.
>    I have 3 classes and I want to classify them using SVM with
>    Searchlight.
>    Code snippet:

>    dataset = dataset.selectSamples(
>                    N.array([l in [1, 2, 3] for l in dataset.labels],
>                            dtype='bool'))
>    mlclf = MulticlassClassifier(clf=LinearCSVMC(),bclf_type="1-vs-1")
>    cv = CrossValidatedTransferError(
>                            TransferError(mlclf),
-- 
                                  .-.
=------------------------------   /v\  ----------------------------=
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