Comments on: A Very Cool Experiment in Human Computing http://www.neomeme.net/2007/07/15/a-very-cool-experiment-in-human-computing/ Traversing the new memes that define us Mon, 06 Oct 2008 14:05:00 +0000 http://wordpress.org/?v=2.2.1 By: Mr Article http://www.neomeme.net/2007/07/15/a-very-cool-experiment-in-human-computing/#comment-7031 Mr Article Mon, 08 Sep 2008 18:48:22 +0000 http://www.neomeme.net/2007/07/15/a-very-cool-experiment-in-human-computing/#comment-7031 Interesting... Very, interesting. Interesting… Very, interesting.

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]]> By: Ryan Mahoski http://www.neomeme.net/2007/07/15/a-very-cool-experiment-in-human-computing/#comment-924 Ryan Mahoski Fri, 20 Jul 2007 22:00:44 +0000 http://www.neomeme.net/2007/07/15/a-very-cool-experiment-in-human-computing/#comment-924 Your post inspired me to check out Galaxy Zoo. Within a couple of minutes I was identifying galaxies as elliptical, spiral, etc. I became bored after ~10 images and won't be returning, but it was fun to try and see how the system worked. Looks like they're running ASP.NET on a Baltimore, MD server to query a database of terabytes. I am curious how their algorithm judges which contributions are correct and which are not. It would be interesting to know how many individuals view each image? Does the system use plurality (majority rule) or do those volunteers who tend to guess correctly carry more weight than those who do not? I am working on a similar algorithm (not in Astronomy) so might just contact them after I finish this comment. Galaxy Zoo reminds me of Amazon's contribution to the "Find Jim Gray" mission this past winter. In Jan/Feb, Mechanical Turk workers voluntarily scanned over half a million satellite images covering some 3,000 square miles of ocean. Evidently, the Turing Award winner capsized his sailboat and drowned before anyone could spot him--but what a remarkable search effort. The parent project, SDSS, intends to "address fundamental questions about the nature of the Universe, the origin of galaxies and quasars, and the formation and evolution of our own Galaxy, the Milky Way." According to their web site, in 5 years the SDSS has: - imaged more than 8,000 square degrees of the sky in five bandpasses - detected nearly 200 million celestial objects - measured spectra of more than 675,000 galaxies, 90,000 quasars and 185,000 stars Your post inspired me to check out Galaxy Zoo. Within a couple of minutes I was identifying galaxies as elliptical, spiral, etc. I became bored after ~10 images and won’t be returning, but it was fun to try and see how the system worked. Looks like they’re running ASP.NET on a Baltimore, MD server to query a database of terabytes.

I am curious how their algorithm judges which contributions are correct and which are not. It would be interesting to know how many individuals view each image? Does the system use plurality (majority rule) or do those volunteers who tend to guess correctly carry more weight than those who do not? I am working on a similar algorithm (not in Astronomy) so might just contact them after I finish this comment.

Galaxy Zoo reminds me of Amazon’s contribution to the “Find Jim Gray” mission this past winter. In Jan/Feb, Mechanical Turk workers voluntarily scanned over half a million satellite images covering some 3,000 square miles of ocean. Evidently, the Turing Award winner capsized his sailboat and drowned before anyone could spot him–but what a remarkable search effort.

The parent project, SDSS, intends to “address fundamental questions about the nature of the Universe, the origin of galaxies and quasars, and the formation and evolution of our own Galaxy, the Milky Way.” According to their web site, in 5 years the SDSS has:

- imaged more than 8,000 square degrees of the sky in five bandpasses
- detected nearly 200 million celestial objects
- measured spectra of more than 675,000 galaxies, 90,000 quasars and 185,000 stars

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