[Mne_analysis] Linear classifier on sensor data with plot patterns and filters

Alexandre Gramfort alexandre.gramfort at inria.fr
Thu Feb 7 15:16:52 EST 2019
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learning in dimension 348000 with 10 samples is not realistic.
You need more sample and to reduce the feature space / dimension.

Alex

On Thu, Feb 7, 2019 at 7:49 PM Пилюгина Нина <aphina_n at outlook.com> wrote:
>
>         External Email - Use Caution
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> n_times is 348000 and total projection items are 10.
>
> Probably there's a very simple solution, but I'm quite new for all this.
>
>
> ________________________________
> От: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> от имени Alexandre Gramfort <alexandre.gramfort at inria.fr>
> Отправлено: 7 февраля 2019 г. 17:04
> Кому: Discussion and support forum for the users of MNE Software
> Тема: Re: [Mne_analysis] Linear classifier on sensor data with plot patterns and filters
>
>         External Email - Use Caution
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> what is n_times for you?
> basically how many samples and features do you have?
>
> A
>
> On Thu, Feb 7, 2019 at 10:25 AM Пилюгина Нина <aphina_n at outlook.com> wrote:
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> >         External Email - Use Caution
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> > I did reshape because it's in example, if it's too heavy I should refuse this conversion?
> > ________________________________
> > От: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> от имени JR KING <jeanremi.king at gmail.com>
> > Отправлено: 7 февраля 2019 г. 16:03
> > Кому: Discussion and support forum for the users of MNE Software
> > Тема: Re: [Mne_analysis] Linear classifier on sensor data with plot patterns and filters
> >
> >
> >         External Email - Use Caution
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> > I think it s because you reshape your meg data (n_trials, n_sensors, n_times) into a matrix (n_trials, n_sensors * n_times)
> >
> > meg_data = meg_epochs.get_data().reshape(len(labels), -1)
> >
> > The covariance of this matrix will be pretty heavy.
> >
> > JR
> >
> >
> > On Thu, 7 Feb 2019 at 09:57, Alexandre Gramfort <alexandre.gramfort at inria.fr> wrote:
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> > I cannot guess.
> >
> > I need to know the size of the new data.
> >
> > Alex
> >
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