reCAPTCHA: Luis von Ahn leverages human-computer interaction for productive development of a commons

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	reCAPTCHA: Luis von Ahn leverages human-computer interaction for productive development of a commons

adamfalls

5-28-2007 12:30 AM

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luis von ahn, captcha, human, computer, interaction, distributed, work, productive

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/192e7c14-3a7c-4d9e-9cab-9b4e421b9a87/6820EB24-F0CA-4D43-8693-4FED8DBCC596/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html" href="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html" style="font-size: 11px;">arstechnica.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html"><H1><A href="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html" set="yes">A new twist on anti-spam tech can help digitize books</A></H1></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/arstechnica.com/img/9C78A248-4D81-4334-987A-2456734180E9" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html">
The service repurposes technology from Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA)—a human-filtering method originally developed by Carnegie Mellon for Yahoo to prevent computers from registering bogus e-mail accounts.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html">any given site</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html"> may present you with a box containing an image of distorted letters or words. You then have to type the letters accurately into a text box in order to proceed.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html">It is estimated that 60 million or more CAPTCHAs are solved each day, with each test taking about 10 seconds,</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html">That's more than 150,000 precious hours of human work that are lost each day, but that we can put to good use with reCAPTCHAs.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20070525-anew-twist-on-anti-spam-tech-can-help-digitize-books.html">
The Carnegie Mellon team, headed up by computer science professor Luis von Ahn, hopes to replace as many traditional CAPTCHAs with reCAPTCHAs as possible in order to harness the "work" already being done by the  public on the Internet every day.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/6820EB24-F0CA-4D43-8693-4FED8DBCC596/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>