Frank Moosmann, Alex Kläser & the All-Star Choir performance at the Machine Learning Summerschool 2007 in TübingenI was lately at the Machine Learning Summer School (MLSS) which took place this year in Tübingen :). In case you are not sure what machine learning means, well, basically it can be seen as a part of artificial intelligence. The goal that the computer is able to “learn” from given data (e.g., recognize faces in images from a given set of face training images). And at the summer school we had during two weeks various courses about this subject. It really was great, good courses, a very good organization, and a lot of great people to meet. At the last evening Frank (on piano) and me (vocals) performed the song “Easy Like Sunday Morning”. Our performance can be found online, amongst the videos from all lectures :). Enjoy.

September 24, 2007 Music, My Life

Trio a la Casa++ at the Fete de la Musique -- Alex Kläser at the guitarJune 21 is “la Fete de la musique” (World Music Day, see also the corresponding wikipedia article). On this day everybody is officially allowed to make music (the only day in the year without any noise restriction!) .. simply descend your instrument, your amplification and make music. We also did this spontaneously with our “Trio a la Casa++”. We come together once in a while in my apartment and jam. It consists of Nicolas (drums) and Jean-Baptiste (double bass). The “++” indicates that we actually were more than three: Fano (saxophone), Yves (guitar), and “the neighbor” (guitar). The people seemed to be very content with our performance (about 3 hours), an improvised mix of jazz, pop, and rock. The neighbor a few floors above us joined us spontaneously through his window playing a guitar solo, than descending to join us also physically in the street. Some pictures that should give you an impression of that nice are online in the gallery .. thanks a lot to Caroline for taking theses marvelous pictures 🙂 !!!

July 1, 2007 Music, My Life

Hey! Have you encountered flies entering your room and then flying around right in the middle of your room? I find that it is quite annoying. You too? Well, then this is truly an absolutely great trick to know. It is actually quite simple to chase them absolutely peaceably out of your room: all you need is to have one of those bigger ceiling fans. Since this fan is usually located in the middle of your room, and since it generates an air current, the flies won’t like and they simply fly away. I observed even that they usually fly away through the windows. That actually proves that flies are smart enough to know where the window is! Contrary to popular believe!

June 20, 2007 My Life

Today I had a look at the tachometer of my bicycle .. wow, it says 4007 km in total. I think I had a few hundreds of kms still left over from Germany, but the main part of it has been cycled in France. Note that I go each day to work with my bicycle (one way is about 8-9 km), now since a year, it sums up. Congratulations Alex 🙂 !

April 20, 2007 My Life

I recently encountered extremly slow compilation and linking times with g++ 4.1 and ld 2.16. Suprisingly, on a different (and slower) machine with g++/gcc 3.4 and ld 2.15 compiling and linking was much faster (easily with a factor of 10 to 20). Since it slowed down the development, it was really annoying. So I was looking around on the web to find some fixes or help. I also tried newer versions of ld and g++, but it didn’t really change anything. Interestingly the CPU usage during linking was down at 2-3%. So finally I found the bottleneck with our NFS which caused a slow-down when using the option -m32 during linking (I’m on a 64 bit machine compiling in 32 bit, so I need this option). I found another bottleneck with the assembler (as) also caused by using NFS. Compiling to a file in the network (i.e., not local) slows down the assembler quite a bit. So as a workaround one should try to compile intermediate object (.o) files as well as to link object files to executables to some place in the local file system (i.e., the file given by the option -o should be somewhere locally).

I thought I should just put this note online, it might save some of our time in case you’re experiencing similar problems :).

April 19, 2007 Development

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