Patrick's Blog

I’m currently running the Ubuntu Dapper Drake Beta on my IBM Thinkpad. What I still don’t like in this latest release of Ubuntu is the usage of the in-kernel software-suspend. I used suspend2 for the past one and a half year and I was quite happy with it. So there isn’t any reason why one should change to the slow and somewhat broken in-kernel swsuspend…

The compilation with the suspend2 patch is quite straightforward:

• download latest kernel sources
• patch the kernel sources with the appropriate suspend2 patch
• enable the suspend2 stuff with make menuconfig (don’t forget lzf compression, this will make the whole thing much faster on modern hardware)
• make-kpkg and dpkg -i …

Not too difficult, but the interesting thing is how to use suspend2 hibernation functionality from the Gnome logout menu. It is a simple as changing the /etc/acpi/hibernate.sh to something like:

/usr/sbin/hibernate -F /etc/hibernate/hibernate.conf

provided that /etc/acpi/hibernate.conf is your configuration file for the hibernation. The same applies for the sleep button, where you need to change /etc/acpi/sleep.sh.

My semester thesis in Machine Learning is finally finished! The main part of the semesterthesis deals with the question, how to validate protein database searches. Beside the whole database search we evaluated several validation methods: hypergeometric p-value, Linear Discriminant Analysis and Gaussian Mixture Model.

See here for more details. There you can download the project documentation and the slides of the presentation.

I just posted some information about the creation of slides with the excellent LaTeX beamer class. It is however not a real tutorial, but rather a description of my workflow. And it isn’t finished yet, so maybe of limited help at the moment… I hope I can add some more information soon.

Beamer tutorial

I updated wordpress from 1.5.* to 2.0. The new version includes various improvements, however I had some problems with the upgrade. I hope everything works now again.

The slides of my talk about Bayesian Support Vector Machines are now online: slides, handout.

To learn more about the topic, without actually reading the slides, you might find this useful

The slides of my talk about the latent Dirichlet allocation, a paper written by Blei, Ng and Jordan are now online, see here.

I started working on my Howto about “Debian GNU/Linux on an IBM T42″. It is not yet finished, but the important part about the kernel configuration is fairly complete. You can find the article here.

I hope to add more sections in the next few days.

I registered a new domain name: pletscher.org, as I thought the old one doesn’t fit the purpose of this site.

The old address is still valid (and points now to pletscher.org) and will stay valid for at least around a year, afterwards I don’t know what to do with it. So you better update your bookmarks.

Update: I decided to move this article from the blog to its own page, as I guess there are a lot of people interested in this article. You can find it here.

Update 2: I’ve just added some links, which helped me a lot installing and configuring OpenWrt on my router. You can find them here.

I just generated a new PGP public key. You can find it here.