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Archive for September, 2009

links for 2009-09-29

links for 2009-09-28

  • "In statistics and machine learning, "model selection" is the problem of picking among different mathematical models which all purport to describe the same data set. This notebook will not (for now) give advice on it; as usual, it's more of a place to organize my thoughts and references…"
  • "Yet, the co-training algorithm in this paper also makes the same assumptions (as it too has underlying naive Bayes clas- sifiers), but does not suffer from the violations. Thus we hypothesize that the co-training algorithm succeeds in part because it is more robust to the assumptions made by its underlying classifiers. This can be understood by looking at the differences in how EM and co-training use the underly- ing assumptions."
  • "We are pleased to announce the publication of the third edition of our text, Introduction to Computer Simulation Methods by Harvey Gould, Jan Tobochnik, and Wolfgang Christian, Addison-Wesley (2006). The text introduces Java programming by example in the context of learning physics. It contains many novel applications, is accessible to a wide range of readers, develops good programming habits, and encourages student experimentation. Our goal is to teach students enough tools so that they can use computer simulations as a method of discovery in physics."
  • "WOB combines a database of bifurcation problems with a tutorial on nonlinear phenomena.

    WOB is designed to be part of a virtual university. The approach is example-oriented and experimental. The emphasis is on examples that are application-oriented."

links for 2009-09-27

links for 2009-09-26

links for 2009-09-25

links for 2009-09-24

links for 2009-09-23

links for 2009-09-21

links for 2009-09-19

links for 2009-09-16

  • "But Republicans are playing a dangerous game. They are benefitting from all this anger in the short term, but they have tapped into something deep and ugly that they can’t control. Calling the president a communist or even Hitler is something far beyond simple incivility or street theater—it is an accusation that intentionally stirs the crazy pot. It is ultimately an incitement to violence."
  • "I get the feeling that both of these unfortunate practices came into play yesterday, when NBC News made the decision to edit out a shocking, inflammatory, and thoroughly revealing comment made by one of the protesters attending the 9/12 Teabagger rally in DC. NBC Nightly News on Saturday evening ran a news package that contained a shot of a woman saying, "We are losing our country, we think the Muslims are moving in and taking over." But when the story was posted online, that comment was edited out and replaced with the infinitely less insane and racist, "I'm scared to death for my country. I believe Obama is running this country into the ground.""
  • "In conjunction with the API release, Collecta is launching a developer’s challenge with ChallengePost.com.

    Dubbed “The AppMaster Challenge,” the contest will help drive the development of creative and powerful applications. From now through October 8th, developers can submit their Collecta-powered plug-in, webapp or application and the Collecta team will select the one that best exemplifies what real-time results can do. The winner will be announced on October 15th, and will receive both a featured spot as AppMaster Champion and a new 15″ MacBook Pro. There will be weekly prizes as well, and developers are encouraged to submit early and often."

  • "Today I believe some people are getting upset about the wrong thing at the wrong time. As Samwick noted, during a recession the deficits will increase – from falling tax revenues, automatic stabilizers and stimulus spending. Maybe some people disagree with the stimulus package, but that isn't going to change (except additions like extending unemployment benefits again).

    Eliminating the recessionary deficit requires the economy to recover, and unfortunately the recovery will most likely be choppy and sluggish, but eventually a recovery will happen. Eliminating the structural deficit will be much more difficult and will require hard choices, but now is not the time."

  • "Section Eight Design was selected as the winner for their partnership with Teton Valley Community School, a non-profit, independent school in Victor, Idaho. The proposal, pictured above, focuses on scalability and a connection to the outdoors, taking advantage of the school's location at the base of the Teton Mountain Range. In addition to classrooms and meeting spaces that the school will build incrementally as they raise funds, gardens, farm animals, and local, drought-resistant flora will be integrated into the school's fabric to promote community, environmental responsibility and a "sense of place.""
  • "Starting from the long-popular design ethos of looking to nature for the best solutions, the Morphogenesis tool set works by proposing optimized 3D structures to the CAD user, based on a defined external envelope and a set of loads and constraints. By hacking away at the envelope until only the minimum of needed material is left, the tool produces some thoroughly odd, organic shapes, often reminiscent of bones or sponges. The shapes can be saved as STL or other 3D data and used as an underlay for exploring alternate designs."
  • "Recognize that there is a demand for certification. The agile community needs to put together a decent certification program, something that the Scrum Alliance has clearly failed at doing. My article Coming Soon: Agile Certification provides some thoughts as to what we need to do. The good news is that people such as Ron Jeffries and Chet Hendrickson, and others, are putting together a developer certification program. The really good news is that these are the right people to do this. The really bad news is that they’re doing it under the aegis of the Scrum Alliance, so whatever they accomplish will unfortunately be tainted by the fallout of the CSM debacle."
  • "The service supports multiple GitHub repos and Tracker projects, so you can run a single service that integrates multiple projects. The service will figure out which commits go to which projects based on a config file on the server that associates a GitHub repo URL (make sure to use the http version of the URL, not https), to a Tracker project ID. For example:"
  • "Synchronize user stories in Pivotal Tracker with Cucumber features."
  • "The L3C is a low-profit limited liability company (LLC), that functions via a business modality that is a hybrid legal structure combining the financial advantages of the limited liability company, an LLC, with the social advantages of a non-profit entity. An L3C runs like a regular business and is profitable. However, unlike a for-profit business, the primary focus of the L3C is not to make money, but to achieve socially beneficial aims, with profit making as a secondary goal. The L3C thus occupies a niche between the for-profit and charitable sectors.
    As of September, 2009, an L3C can only be formed in the states of Michigan[1] ,Vermont, Wyoming, Utah, the Crow Indian Nation and the Oglala Sioux Tribe. On August 4, 2009, Gov. Pat Quinn signed Illinois' L3C Bill SBO239 and the law will take effect on January 1, 2010."

links for 2009-09-15

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