http://www.spicylogic.com/allenday/blog A Computational Scientist's View Sun, 06 Jul 2008 01:44:01 +0000 http://backend.userland.com/rss092 en I'm frequently monitoring webservers, cache servers, database servers, etc by tailing their log files, e.g. tail -f /etc/httpd/logs/access_log I like the --color option provided by grep, but found it to be too limited (only one allowed, no wildcard support). After a bit of searching to see if a tool existed for ... http://www.spicylogic.com/allenday/blog/2008/07/05/pcoc-piped-command-output-colorizer/ I was preparing a report on iPhone locales from some web server logs, and noticed a few oddities. Some of the hits appear to be coming from the new 3G iPhone 2.0, check out the User-Agent strings: # observed from 1 metrocast.net (NY) IP Mozilla/5.0 (iPod; U; iPhone OS 2_0 like ... http://www.spicylogic.com/allenday/blog/2008/07/04/iphone-20-user-agent-string-other-iphoneipod-data/ Setting up Taste v1.7.2 on a CentOS 4 x86_64 box. Taste has merged with Mahout now, but I still want to do this standalone b/c I'm having trouble getting the JUnit tests to pass for Mahout. With that out of the way... These are the shell commands I assembled after following ... http://www.spicylogic.com/allenday/blog/2008/06/30/notes-on-setting-up-taste/ Overview This documents my experience setting up hadoop on three 2-cpu hyperthreaded Centos 5 x86 boxes. The machines being used are called: hadoop-0-0 hadoop-0-1 hadoop-0-2 System Setup Unless otherwise stated, each task was executed on all three machines. Set up hadoop user I added a "hadoop" user up on each node, and untarred the hadoop source directly in to ... http://www.spicylogic.com/allenday/blog/2008/06/20/notes-on-setting-up-hadoop-on-centos-5-x86/ 7872. It's either my most recent score, or a lower bound on the number of minutes I've spent on Desktop Tower Defense. Take your pick, just don't tell my dissertation committee ;-) Play here, or check my mazes. Warning, it's addictive if you like puzzle/realtime strategy games. http://www.spicylogic.com/allenday/blog/2008/05/31/desktop-tower-defense/ I'm collating here all the tech events/sites I hear about that are specific to Los Angeles / Southern California. This post is the result of several conversations I've had, verbally and via email, about the scattered tech scene in Los Angeles. Disclaimer: I'm not the organizer of ... http://www.spicylogic.com/allenday/blog/2008/05/30/los-angeles-social-tech-scene/ That's my dissertation topic, and I'm defending it Thursday morning. You can grab the latest PDF here. I'll update this post with my PowerPoint slides when I finish them. The crux of the work was published last year as Celsius: A community resource for affymetrix microarray data. ... http://www.spicylogic.com/allenday/blog/2008/05/27/the-construction-and-usage-of-a-microarray-data-warehouse/ Introduction I've been learning about some of the techniques used by the so-called "Black Hat SEO" community for boosting their rankings in search engine results. Intriguing stuff. I'm by no means an expert in this area, but the theory underlying building black-hat pages and networks sure looks like it ... http://www.spicylogic.com/allenday/blog/2008/05/27/statistical-html-content-extraction/ I've been collating information on laws for the area where I live that relate to barking dogs. If you're in Culver City, Los Angeles County, or the state of California, some or all of this should be useful to you. If you also have a Home Owners' Association ... http://www.spicylogic.com/allenday/blog/2008/05/21/culver-city-barking-dogs-los-angeles-barking-dogs-california-barking-dogs/ I wanted to configure Wordpress pinging for the Facebook Flog Blog application. For some reason the feed on my profile page isn't updating, and I thought maybe this would do the trick. Took a bit of digging, but I found a guide at Technorati. Hint: "options" has been (moved ... http://www.spicylogic.com/allenday/blog/2008/05/19/configure-wordpress-ping/