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	<title>De Rerum Natura &#187; Randomness</title>
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	<link>http://www.corrada.com/blog</link>
	<description>Randomness, entropy, pattern matching, maps, geometry, knots, and scientific readings</description>
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		<title>Scroogenomics</title>
		<link>http://www.corrada.com/blog/2010/04/25/scroogenomics/</link>
		<comments>http://www.corrada.com/blog/2010/04/25/scroogenomics/#comments</comments>
		<pubDate>Sun, 25 Apr 2010 13:53:44 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/2010/04/25/scroogenomics/</guid>
		<description><![CDATA[I&#8217;m sending out a birthday card with a cash gift. It feels strange to give cash. We seem to attach a &#8220;tacky&#8221; factor to doing so. Leave it to economist Joel Waldfogel to write a book (&#8220;Scroogenomics&#8221;) on the 20 to 30 percent waste in value that occurs each Christmas season. He argues that cash [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>The Data Deluge: We are better at searching than organizing</title>
		<link>http://www.corrada.com/blog/2010/03/26/the-data-deluge-we-are-better-at-searching-than-organizing/</link>
		<comments>http://www.corrada.com/blog/2010/03/26/the-data-deluge-we-are-better-at-searching-than-organizing/#comments</comments>
		<pubDate>Fri, 26 Mar 2010 09:46:14 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/2010/03/26/the-data-deluge-we-are-better-at-searching-than-organizing/</guid>
		<description><![CDATA[We are awash in data. Computers and cheap memory storage make it possible for us to collect 1/4 of a Gigabyte of information for every woman, man and child in the planet. Most of it is unused or unusable. We may be relatively good at searching this data but we suck at organizing it. Google [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2010/03/26/the-data-deluge-we-are-better-at-searching-than-organizing/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>On the usefulness of glorious failures</title>
		<link>http://www.corrada.com/blog/2009/07/23/on-the-usefulness-of-glorious-failures/</link>
		<comments>http://www.corrada.com/blog/2009/07/23/on-the-usefulness-of-glorious-failures/#comments</comments>
		<pubDate>Fri, 24 Jul 2009 03:03:05 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=127</guid>
		<description><![CDATA[Jon Stewart&#8217;s comments on the usefulness of the Apollo missions:
It was that fateful day in July that we planted the Stars and Stripes in the lunar surface, officially claiming the moon as America&#8217;s space Puerto Rico. It was all ours. It was the culmination of a dream. &#8230; It took us ten years, astronauts&#8217; lives, [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2009/07/23/on-the-usefulness-of-glorious-failures/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Apology to my few readers</title>
		<link>http://www.corrada.com/blog/2009/01/13/apology-to-my-few-readers/</link>
		<comments>http://www.corrada.com/blog/2009/01/13/apology-to-my-few-readers/#comments</comments>
		<pubDate>Wed, 14 Jan 2009 00:56:46 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=112</guid>
		<description><![CDATA[I want to apologize to my few readers for the lack of posts since May of last year. This is partly due to personal circumstances that overwhelmed me emotionally and mentally. Since last Fall, however, I have rebounded and have been, since Thanksgiving, been engaged in an immensely satisfying intellectual journey that has greatly generalized [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2009/01/13/apology-to-my-few-readers/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Guaranteeing accuracy and precision</title>
		<link>http://www.corrada.com/blog/2008/11/17/guaranteeing-accuracy-and-precision/</link>
		<comments>http://www.corrada.com/blog/2008/11/17/guaranteeing-accuracy-and-precision/#comments</comments>
		<pubDate>Mon, 17 Nov 2008 19:41:21 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=90</guid>
		<description><![CDATA[Discussions in this blog on precision error estimation via &ell; 1  minimization have made it clear that the technique is only good for recovering precision, not accuracy. This post will argue that accuracy can also be guaranteed if all the detectors have a greater than one-half probability of being correct.
By &#8220;guaranteed&#8221;, I mean that [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2008/11/17/guaranteeing-accuracy-and-precision/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Site CSS broken</title>
		<link>http://www.corrada.com/blog/2008/11/17/site-css-broken/</link>
		<comments>http://www.corrada.com/blog/2008/11/17/site-css-broken/#comments</comments>
		<pubDate>Mon, 17 Nov 2008 05:41:18 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=88</guid>
		<description><![CDATA[My introduction of cool pop-out images has created all sorts of bad css entries for this site. The site no longer validates as having well-formed CSS (check out the validate button at the bottom of this page). I apologize to the purists out there. I am proud to say, however, that it validates as correct [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2008/11/17/site-css-broken/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<item>
		<title>Robust voting in uncertain environments</title>
		<link>http://www.corrada.com/blog/2008/11/17/robust-voting-in-uncertain-environments/</link>
		<comments>http://www.corrada.com/blog/2008/11/17/robust-voting-in-uncertain-environments/#comments</comments>
		<pubDate>Mon, 17 Nov 2008 05:00:15 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Compressed Sensing]]></category>
		<category><![CDATA[Machine Learning]]></category>
		<category><![CDATA[Randomness]]></category>
		<category><![CDATA[precision error application]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=83</guid>
		<description><![CDATA[Combining the judgments of different recognizers is always better than using the best one alone. This observation is universal in machine learning realms. But it seldom gets used in practice. Why?
For one, it costs more to implement. Instead of one recognizer, you must deploy several. Computing cycles grow linearly with the number of recognizers if [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Minimum number of questions revisited</title>
		<link>http://www.corrada.com/blog/2008/04/11/minimum-number-of-questions-revisited/</link>
		<comments>http://www.corrada.com/blog/2008/04/11/minimum-number-of-questions-revisited/#comments</comments>
		<pubDate>Sat, 12 Apr 2008 04:02:10 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Randomness]]></category>
		<category><![CDATA[Multiple Choice Questions Exam]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=70</guid>
		<description><![CDATA[To show off the installation of FancyZoom (a trick I learned while visiting the excellent Language Log), I present a graph of the percentage variation in the mean square precision error as a function of the number of questions used to compute it. The image looks small but you can now click on it to [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2008/04/11/minimum-number-of-questions-revisited/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>ICML accepts precision error via L1 minimization paper</title>
		<link>http://www.corrada.com/blog/2008/04/09/icml-accepts-precision-error-via-l1-minimization-paper/</link>
		<comments>http://www.corrada.com/blog/2008/04/09/icml-accepts-precision-error-via-l1-minimization-paper/#comments</comments>
		<pubDate>Wed, 09 Apr 2008 10:48:02 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Compressed Sensing]]></category>
		<category><![CDATA[Fourier Analysis]]></category>
		<category><![CDATA[Group Theory]]></category>
		<category><![CDATA[MathML]]></category>
		<category><![CDATA[Mathematics]]></category>
		<category><![CDATA[Randomness]]></category>
		<category><![CDATA[Scientific Readings]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=69</guid>
		<description><![CDATA[Our technical report on how to recover precision error estimates with &ell; 1 -minimization has been accepted by the 2008 International Conference on Machine Learning.
The paper originally got three anonymous reviews. Two were positive, one strongly negative. In our response to the reviews, we agreed with the general criticism by the reviewers that one experimental [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2008/04/09/icml-accepts-precision-error-via-l1-minimization-paper/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Student answers versus random answers</title>
		<link>http://www.corrada.com/blog/2008/03/31/student-answers-versus-random-answers/</link>
		<comments>http://www.corrada.com/blog/2008/03/31/student-answers-versus-random-answers/#comments</comments>
		<pubDate>Mon, 31 Mar 2008 17:34:43 +0000</pubDate>
		<dc:creator>Andrés</dc:creator>
				<category><![CDATA[Compressed Sensing]]></category>
		<category><![CDATA[Randomness]]></category>
		<category><![CDATA[test assessment]]></category>

		<guid isPermaLink="false">http://www.corrada.com/blog/?p=65</guid>
		<description><![CDATA[An interesting baseline for thinking about precision error is to consider the case of uniformly random answers. The student may be completely ignorant: you gave a college level test to kindergarten kids. Your questions were so hard or so incomprehensible (think Chris Kattan&#8217;s mumbling character giving a &#8220;uupp-uizzz&#8221; (pop-quiz) to this students) that students are [...]]]></description>
		<wfw:commentRss>http://www.corrada.com/blog/2008/03/31/student-answers-versus-random-answers/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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