[Lisa_seminaires] Talk by Joerg Bornschein, Tuesday, December 11th, 11:00am, room TBD.

Guillaume Desjardins guillaume.desjardins at gmail.com
Mar 11 Déc 08:54:03 EST 2012


A reminder for this morning's talk by Joerg Bornschein. I have not yet
received confirmation for AA3195, so the backup room will be AA3256 (LISA
lab).

On Mon, Dec 10, 2012 at 4:31 PM, Guillaume Desjardins <
guillaume.desjardins at gmail.com> wrote:

> Please join us tomorrow morning for a talk by Joerg Bornschein. The talk
> will be held at 11:00 am in a room to be determined shortly (probably
> AA3195).
>
> Title: Parallelized training of nonlinear sparse coding
>
> Abstract:
>
> I'd like to give a short presentation about our work on two closely
> related nonlinear sparse coding models. Both
> models are nonlinear in the sense, that they assume active dictionary
> elements to combine nonlinearly when
> explaining the observed data. One of the models assumes binary latent
> variables, the other assumes continuous
> latents governed by a spike-and-slab prior. We train both models on
> natural image data and analyze the learned
> receptive fields.
> The models are trained using a parallelized EM implementation which we
> typically run on ~300 CPU cores in
> parallel. But the implementation demonstrated reasonable (weak)
> scaling behavior even when running on
> >1000 CPU cores.
>
>
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