Thanks for the quick response! Does something like this look appropriate?
X = np.random.randn(1000, 50) # some 50-dimensional data
p = Pipeline([ ('nystroem', Nystroem(n_components=100)), ('pca',
PCA(n_components=2)) ])
p.fit(X)
components = p.named_steps['pca'].components_
-Robert
On Thu, Apr 24, 2014 at 8:13 PM, Andreas Mueller <[email protected]> wrote:
> Yes. Just use the nystrom approximation and the apply the standard pca.
> You can also build a pipeline combining them into one step.
>
> Hth,
> Andy
> On Apr 24, 2014 7:56 PM, "Robert McGibbon" <[email protected]> wrote:
>
>> Hey All,
>>
>> Does anyone know if it's possible to use the Nystrom
>> approximation<http://scikit-learn.org/stable/modules/kernel_approximation.html#nystroem-method-for-kernel-approximation>
>> with
>> KernelPCA (e.g. [1]) in sklearn?
>>
>> -Robert
>>
>> .. [1] Improved Nystrom Low-Rank Approximation and Error Analysis
>> http://www.machinelearning.org/archive/icml2008/papers/476.pdf
>>
>>
>> ------------------------------------------------------------------------------
>> Start Your Social Network Today - Download eXo Platform
>> Build your Enterprise Intranet with eXo Platform Software
>> Java Based Open Source Intranet - Social, Extensible, Cloud Ready
>> Get Started Now And Turn Your Intranet Into A Collaboration Platform
>> http://p.sf.net/sfu/ExoPlatform
>> _______________________________________________
>> Scikit-learn-general mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
>>
>>
>
> ------------------------------------------------------------------------------
> Start Your Social Network Today - Download eXo Platform
> Build your Enterprise Intranet with eXo Platform Software
> Java Based Open Source Intranet - Social, Extensible, Cloud Ready
> Get Started Now And Turn Your Intranet Into A Collaboration Platform
> http://p.sf.net/sfu/ExoPlatform
> _______________________________________________
> Scikit-learn-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
>
>
------------------------------------------------------------------------------
Start Your Social Network Today - Download eXo Platform
Build your Enterprise Intranet with eXo Platform Software
Java Based Open Source Intranet - Social, Extensible, Cloud Ready
Get Started Now And Turn Your Intranet Into A Collaboration Platform
http://p.sf.net/sfu/ExoPlatform
_______________________________________________
Scikit-learn-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
