Laurens van der Maaten just released a large matlab toolbox featuring 25 dimensionality reduction techniques [Updated: Dec 1, 2008]. And then you can use PRTools to do your own classification. Be careful what you wish for :-)

The list of techniques readily implemented:

Principal Component Analysis (PCA)

Simple PCA

Probabilistic PCA

Linear Discriminant Analysis (LDA)

Multidimensional scaling (MDS)

Isomap

Landmark Isomap

Local Linear Embedding (LLE)

Laplacian Eigenmaps

Hessian LLE

Local Tangent Space Alignment (LTSA)

Conformal Eigenmaps (extension of LLE)

Maximum Variance Unfolding (extension of LLE)

Fast Maximum Variance Unfolding (FastMVU)

Kernel PCA

Generalized Discriminant Analysis (GDA)

Diffusion maps

Stochastic Neighbor Embedding (SNE)

Neighborhood Preserving Embedding (NPE)

Locality Preserving Projection (LPP)

Linear Local Tangent Space Alignment (LLTSA)

Stochastic Proximity Embedding (SPE)

Multilayer autoencoders (training by RBM + backpropagation or by an evolutionary algorithm)

Local Linear Coordination (LLC)

Manifold charting

Coordinated Factor Analysis (CFA)

## 9 comments:

This toolbox seems to no longer be available online. Do you have a copy you can share?

Thanks,

Søren

Hello Soren,

No I don't. I tried to contact Laurens but the e-mail address I have found on google does not seem to work.

Sorry,

Igor.

Yeah, that was my experience as well, which is a bit sad. All that hard work, and now the code is gone :-(

Thanks,

Søren

I am sure contacting one of his rrecent co-author might yield a more fruitful e-mail address.

Igor.

or through his linkedin profile.

Igor.

The LinkedIn stuff seems to require a paid membership of LinkedIn.

However, contacting co-authors sounds like a good idea. I'll try that.

Thanks,

Søren

The license allows for it, so I've posted a copy of v0.4b on my site:

http://www.andrew.cmu.edu/user/tebuck/drtoolbox.tar.gz

Thank you Taraz.

Igor.

I was just told that the new page is here:

http://ticc.uvt.nl/~lvdrmaaten/Laurens_van_der_Maaten/Home.html

ver. 0.7

I am going to update the post to reflect the new address.

Igor.

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