Ah, thank you very much for that. <br>I am still trying RFE from <a href="http://www.pymvpa.org/featsel.html">http://www.pymvpa.org/featsel.html</a> and I'm using the code:<br><br>rfesvm_split = SplitClassifier(LinearCSVMC())<br>
clf = \<br>            FeatureSelectionClassifier(<br>            clf = LinearCSVMC(),<br>            feature_selection = RFE(<br>                sensitivity_analyzer = rfesvm_split.get_sensitivity_analyzer(),<br>                transfer_error=ConfusionBasedError(<br>
                    rfesvm_split,<br>                    confusion_state="confusion"),<br>                feature_selector=FractionTailSelector(<br>                    0.2, mode='discard', tail='lower'),<br>
                update_sensitivity=True),<br>                enable_states = ['feature_ids'])<br><br> however, it cannot get past the confusion conditional attribute of ConfusionBasedError...<br><br>ValueError: Conditional attribute confusion is not defined for classifier SplitClassifier(combiner=None, space='targets')<br>
<br>Again, thank you very much in advance for any help/ideas, I really appreciate it.<br><br>Best,<br>Kimberly<br><br><br>