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<channel>
	<title>[Lowerbounds, Upperbounds] &#187; Theory and News</title>
	<atom:link href="http://magic.aladdin.cs.cmu.edu/category/theory-of-computing/theory-news/feed/" rel="self" type="application/rss+xml" />
	<link>http://magic.aladdin.cs.cmu.edu</link>
	<description>Algorithms are everywhere.</description>
	<lastBuildDate>Tue, 23 Dec 2008 19:58:45 +0000</lastBuildDate>
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	<language>en</language>
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			<item>
		<title>Summer Must Read: Annotated Turing</title>
		<link>http://magic.aladdin.cs.cmu.edu/2008/07/16/summer-must-read-annotated-turing/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2008/07/16/summer-must-read-annotated-turing/#comments</comments>
		<pubDate>Wed, 16 Jul 2008 20:45:37 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=534</guid>
		<description><![CDATA[The Annotated Turing: A Guided Tour Through Alan Turing&#8217;s Historic Paper on Computability and the Turing Machine by Charles Petzold
P.S. Charles has a blog, and some recent post are about Turing and this book.
]]></description>
			<content:encoded><![CDATA[<p><a href="http://www.theannotatedturing.com/">The Annotated Turing: A Guided Tour Through Alan Turing&#8217;s Historic Paper on Computability and the Turing Machine</a> by <a href="http://www.charlespetzold.com/">Charles Petzold</a></p>
<p>P.S. Charles has a <a href="http://www.charlespetzold.com/blog/blog.xml">blog</a>, and some recent post are about Turing and this book.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Parallel Algorithms Dropped from CLRS</title>
		<link>http://magic.aladdin.cs.cmu.edu/2008/05/05/parallel-algorithms-dropped-from-clrs/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2008/05/05/parallel-algorithms-dropped-from-clrs/#comments</comments>
		<pubDate>Tue, 06 May 2008 01:53:42 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=526</guid>
		<description><![CDATA[In an Intel Software Network article titled Parallel computing: disappearing from CS curricula???, Michael Wrinn demonstrated that parallel computing has gradually disappeared from popular CS curricula in the past 10+ years. His first example is:
[...] a panelist at IPDPS (in Miami, a couple of weeks ago) assert that parallel-processing topics have been disappearing from CS [...]]]></description>
			<content:encoded><![CDATA[<p>In an Intel Software Network article titled <a href="http://softwareblogs.intel.com/2008/05/02/parallel-computing-disappearing-from-cs-curricula/">Parallel computing: disappearing from CS curricula???</a>, Michael Wrinn demonstrated that parallel computing has gradually disappeared from popular CS curricula in the past 10+ years. His first example is:</p>
<blockquote><p>[...] a panelist at IPDPS (in Miami, a couple of weeks ago) assert that parallel-processing topics have been disappearing from CS curricula in recent years. As anecdotal evidence, he pointed out the topic’s removal in the 2nd edition of Introduction to Algorithms [...]</p></blockquote>
<p>The article goes on to give several other examples to prove his point. In the end, Michael wrote</p>
<blockquote><p>[...] multicore computing platforms are now the norm. Recognizing that reality, let’s make the adjustment time short.</p></blockquote>
<p>Are we expecting a surge of algorithm and data structure textbooks with an emphasis in multicore? <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Knuth Interview 2008-04-25</title>
		<link>http://magic.aladdin.cs.cmu.edu/2008/04/25/knuth-interview-2008-04-25/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2008/04/25/knuth-interview-2008-04-25/#comments</comments>
		<pubDate>Sat, 26 Apr 2008 01:49:54 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=518</guid>
		<description><![CDATA[Available here at informIT.
Andrew Binstock and Donald Knuth converse on the success of open source, the problem with multicore architecture, the disappointing lack of interest in literate programming, the menace of reusable code, and that urban legend about winning a programming contest with a single compilation.
Among other things, he explained why the numbering of Volume [...]]]></description>
			<content:encoded><![CDATA[<p>Available <a href="http://www.informit.com/articles/article.aspx?p=1193856">here</a> at informIT.</p>
<blockquote><p>Andrew Binstock and Donald Knuth converse on the success of open source, the problem with multicore architecture, the disappointing lack of interest in literate programming, the menace of reusable code, and that urban legend about winning a programming contest with a single compilation.</p></blockquote>
<p>Among other things, he explained why the numbering of Volume 4 fascicles starts at 0 and not 1. (You may recall that there is no Volume 0 and so zero-based counting cannot be exactly the reason. Well, I mean <em>not exactly</em>.)</p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Algorithms in Media 2007-09-23</title>
		<link>http://magic.aladdin.cs.cmu.edu/2007/09/23/algorithms-in-media-2007-09-23/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2007/09/23/algorithms-in-media-2007-09-23/#comments</comments>
		<pubDate>Sun, 23 Sep 2007 19:23:21 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/2005/04/24/how-do-you-manage-your-bib-entries/</guid>
		<description><![CDATA[From this New York Times article:
Algorithms, as closely guarded as state secrets, buy and sell stocks and mortgage-backed securities, sometimes with a dispassionate zeal that crashes markets. Algorithms promise to find the news that fits you, and even your perfect mate.
Perfect!
]]></description>
			<content:encoded><![CDATA[<p>From <a href="http://www.nytimes.com/2007/09/23/weekinreview/23john.html">this New York Times article</a>:</p>
<blockquote><p>Algorithms, as closely guarded as state secrets, buy and sell stocks and mortgage-backed securities, sometimes with a dispassionate zeal that crashes markets. Algorithms promise to find the news that fits you, and even your perfect mate.</p></blockquote>
<p>Perfect!</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>&#8220;Algorithms&#8221; sound scary, but less scary than &#8220;Operations Research&#8221;</title>
		<link>http://magic.aladdin.cs.cmu.edu/2007/09/14/algorithms-sound-scary-but-less-scary-than-operations-research/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2007/09/14/algorithms-sound-scary-but-less-scary-than-operations-research/#comments</comments>
		<pubDate>Fri, 14 Sep 2007 18:50:06 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=271</guid>
		<description><![CDATA[See this great post in Michael Trick&#8217;s OR Blog on a recent article in the Economist magazine titled &#8220;Business by numbers&#8221;.
Among other things, this is how the Economist article begins:
Algorithms sound scary, of interest only to dome-headed mathematicians.
Well, I have no idea what &#8220;dome-headed&#8221; means, but Google tells me that dome-headed creatures can be scary. [...]]]></description>
			<content:encoded><![CDATA[<p>See this great <a href="http://mat.tepper.cmu.edu/blog/?p=174">post</a> in <a href="http://mat.tepper.cmu.edu/blog/">Michael Trick&#8217;s OR Blog</a> on a recent article in the Economist magazine titled &#8220;Business by numbers&#8221;.</p>
<p>Among other things, this is how the Economist article begins:</p>
<blockquote><p>Algorithms sound scary, of interest only to dome-headed mathematicians.</p></blockquote>
<p>Well, I have no idea what &#8220;dome-headed&#8221; means, but Google tells me that dome-headed creatures can be <a href="http://student.britannica.com/comptons/article-199603? ">scary</a>. Now, domed-head mathematicians&#8230; hmm, maybe it has to do with banging the head to the wall? <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Godel Prize 2007 Announced</title>
		<link>http://magic.aladdin.cs.cmu.edu/2007/05/15/godel-prize-2007-announced/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2007/05/15/godel-prize-2007-announced/#comments</comments>
		<pubDate>Tue, 15 May 2007 23:38:19 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=240</guid>
		<description><![CDATA[http://www.eatcs.org/activities/awards/goedel2007.html

The 2007 Gödel Prize for outstanding journal articles in theoretical computer science is awarded to:
Alexander A. Razborov and Steven Rudich 
for their paper
&#8220;Natural Proofs&#8221;, Journal of Computer and System Sciences, Vol. 55, No. 1, 1997, pp. 24-35. 
It was first presented at the Twenty-sixth Annual ACM Symposium on Theory of computing, Montreal, Quebec, Canada. 1994, [...]]]></description>
			<content:encoded><![CDATA[<p>http://www.eatcs.org/activities/awards/goedel2007.html</p>
<blockquote><p>
The 2007 Gödel Prize for outstanding journal articles in theoretical computer science is awarded to:<br />
Alexander A. Razborov and Steven Rudich </p>
<p>for their paper<br />
&#8220;Natural Proofs&#8221;, Journal of Computer and System Sciences, Vol. 55, No. 1, 1997, pp. 24-35. </p>
<p>It was first presented at the Twenty-sixth Annual ACM Symposium on Theory of computing, Montreal, Quebec, Canada. 1994, pp. 204 &#8211; 213.
</p></blockquote>
<p>I note that Natural Proofs have been written a <a href="http://weblog.fortnow.com/2006/05/importance-of-natural-proofs.html">couple</a> <a href="http://in-theory.blogspot.com/2006/08/natural-proofs.html">times</a> before on the blogosphere, and I further note that the prize must have been announced at least a week ago from seeing a <a href="http://processalgebra.blogspot.com/2007/05/gdel-prize-2007.html">link</a> into the latter post. Ha!</p>
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		</item>
		<item>
		<title>SODA 2007 List of Accepted Papers</title>
		<link>http://magic.aladdin.cs.cmu.edu/2006/09/08/soda-2007-list-of-accepted-papers/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2006/09/08/soda-2007-list-of-accepted-papers/#comments</comments>
		<pubDate>Fri, 08 Sep 2006 04:34:56 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/2006/09/07/soda-2007-list-of-accepted-papers/</guid>
		<description><![CDATA[Posted here:
http://www.cs.colorado.edu/~hal/alist.txt
Update: Some stats are available in this post in Geomblog.
]]></description>
			<content:encoded><![CDATA[<p>Posted here:</p>
<p>http://www.cs.colorado.edu/~hal/alist.txt</p>
<p>Update: Some stats are available in <a href="http://geomblog.blogspot.com/2006/09/soda-results-trickling-in.html">this post in Geomblog</a>.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>FOCS 2005 Early Registration Ending</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/09/22/focs-2005-early-registration-ending/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/09/22/focs-2005-early-registration-ending/#comments</comments>
		<pubDate>Thu, 22 Sep 2005 04:44:45 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Calendar]]></category>
		<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=163</guid>
		<description><![CDATA[If you have not registered for FOCS 2005 yet, please consider doing it now. The early registration for the conference and also the hotel is ending this Friday (Sept 23).
http://www.cs.cmu.edu/~FOCS05/
]]></description>
			<content:encoded><![CDATA[<p>If you have not registered for FOCS 2005 yet, please consider doing it now. The early registration for the conference and also the hotel is ending this Friday (Sept 23).</p>
<p><a href="http://www.cs.cmu.edu/~FOCS05/">http://www.cs.cmu.edu/~FOCS05/</a></p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>SODA 2006 List of Accepted Papers</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/09/09/soda-2006-list-of-accepted-papers/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/09/09/soda-2006-list-of-accepted-papers/#comments</comments>
		<pubDate>Fri, 09 Sep 2005 23:08:05 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=168</guid>
		<description><![CDATA[Well, I don&#8217;t know if SODA is rising, falling, or maybe falling in one regard because it is rising in another, but I do know that the list of accepted papers has been published.  
According to Cliff Stein, there were 432 submissions, of which 135 have been accepted. A comment at Jeff Erickson&#8217;s blog [...]]]></description>
			<content:encoded><![CDATA[<p>Well, I don&#8217;t know if SODA is <a href="http://weblog.fortnow.com/2005/09/soda-rising.html">rising, falling, or maybe falling in one regard because it is rising in another</a>, but I do know that the <a href="http://www.columbia.edu/~cs2035/accepted-papers">list of accepted papers</a> has been published. <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
<p>According to Cliff Stein, there were 432 submissions, of which 135 have been accepted. A <a href="http://3dpancakes.typepad.com/ernie/2005/09/soda_pop_135.html#comments">comment</a> at Jeff Erickson&#8217;s blog reveals that 135 is the maximum that they can fit in 3 days, as discussed in the business meeting last year.</p>
<p><strong>Update:</strong> this is the <a href="http://www.siam.org/meetings/da06/accepted_papers.txt">official list</a> on SODA 2006&#8217;s web site.</p>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>SPAA and PODC 2005 &#8211; Las Vegas</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/07/15/spaa-and-podc-2005-las-vegas/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/07/15/spaa-and-podc-2005-las-vegas/#comments</comments>
		<pubDate>Fri, 15 Jul 2005 21:20:37 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=129</guid>
		<description><![CDATA[Las Vegas, NV, USA
July 17-20, 2005 

17th ACM
Symposium on Parallelism in Algorithms and Architectures
(conference program)

Twenty-Fourth Annual ACM SIGACT-SIGOPS
Symposium on Principles of Distributed Computing
(conference program)


P.S. I made the mistake of booking my flights before actually reading the conference program. Thinking that the conference starts on the 17th, oh well, I booked my flight so that I [...]]]></description>
			<content:encoded><![CDATA[<p>Las Vegas, NV, USA<br />
July 17-20, 2005 </p>
<ul>
<li>17th ACM<br />
<a href="http://www.cs.jhu.edu/~spaa/"><strong>Symposium on Parallelism in Algorithms and Architectures</strong></a><br />
(<a href="http://www.cs.jhu.edu/~spaa/2005/SPAA-Program.txt">conference program</a>)
</li>
<li>Twenty-Fourth Annual ACM SIGACT-SIGOPS<br />
<a href="http://www.podc.org/podc2005/"><strong>Symposium on Principles of Distributed Computing</strong></a><br />
(<a href="http://www.podc.org/podc2005/program.html">conference program</a>)
</li>
</ul>
<p>P.S. I made the mistake of booking my flights before actually reading the conference program. Thinking that the conference starts on the 17th, oh well, I booked my flight so that I will arrive in the afternoon of the 16th. No, I really did not plan to spend time in the casinos. <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Theory Matters and TheoryMatters.Org</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/06/30/theory-matters-and-theorymattersorg/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/06/30/theory-matters-and-theorymattersorg/#comments</comments>
		<pubDate>Fri, 01 Jul 2005 01:35:10 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Discussion]]></category>
		<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=112</guid>
		<description><![CDATA[Since STOC 2005, there has been a lot of discussion about theory funding and a task force has been set up by SIGACT to work on advocacy issues.
To start, you are referred to the post by Suresh Venkatasubramanian and a slightly later post by Lance Fortnow. Make sure you read the comment by Michael Mitzenmacher [...]]]></description>
			<content:encoded><![CDATA[<p>Since STOC 2005, there has been a lot of discussion about theory funding and a task force has been set up by SIGACT to work on advocacy issues.</p>
<p>To start, you are referred to <a href="http://geomblog.blogspot.com/2005/06/new-theory-task-force_29.html">the post by Suresh Venkatasubramanian</a> and <a href="http://weblog.fortnow.com/2005/06/research-directions-for-theory.html">a slightly later post by Lance Fortnow</a>. Make sure you read <a href="http://weblog.fortnow.com/2005/06/research-directions-for-theory.html#112017148889351742">the comment by Michael Mitzenmacher</a> for a clarification on the purpose of the task force, directly from a task force member.</p>
<p>Let the message spread.</p>
<p>P.S. Jeff Erickson has <a href="http://3dpancakes.typepad.com/ernie/2005/06/mozarts_ass.html">an interesting post</a> about basic research funding too.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>FOCS 2005 List of Accepted Papers</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/06/29/focs-2005-list-of-accepted-papers/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/06/29/focs-2005-list-of-accepted-papers/#comments</comments>
		<pubDate>Thu, 30 Jun 2005 00:16:08 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/?p=108</guid>
		<description><![CDATA[The list has been posted. And before I know it, Anupam has already updated his page.
http://www.cs.cornell.edu/Research/focs05/list.htm
]]></description>
			<content:encoded><![CDATA[<p>The list has been posted. And before I know it, Anupam has already updated <a href="http://www.cs.cmu.edu/~anupamg/lists.html">his page</a>.</p>
<p><a href="http://www.cs.cornell.edu/Research/focs05/list.htm">http://www.cs.cornell.edu/Research/focs05/list.htm</a></p>
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		<item>
		<title>The Theory behind Pointing a Gun at Someone&#8217;s Head</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/06/22/the-theory-behind-pointing-a-gun-at-someones-head/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/06/22/the-theory-behind-pointing-a-gun-at-someones-head/#comments</comments>
		<pubDate>Wed, 22 Jun 2005 17:19:03 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/2005/06/22/if-you-put-a-gun-to-my-head/</guid>
		<description><![CDATA[From arXiv&#8217;s cs daily comes a theory paper that can be used to deal with matters of life and death. How could theory be any more practical than *that*?  

The intuition here is that it is saying: &#8220;Regarding membership in L, if you put a gun to my head and forced me to bet [...]]]></description>
			<content:encoded><![CDATA[<p>From arXiv&#8217;s cs daily comes a theory paper that can be used to deal with matters of life and death. How could theory be any more practical than *that*? <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
<blockquote><p>
The intuition here is that it is saying: &#8220;Regarding membership in L, if you put a gun to my head and forced me to bet on one of x or y as belonging to L, my money would be on f(x,y).&#8221;
</p></blockquote>
<p>Full information:<br />
<span id="more-97"></span></p>
<p>Paper: cs.CC/0506082<br />
Date: Mon, 20 Jun 2005 22:33:51 GMT   (100kb,S)</p>
<p>Title: Open Questions in the Theory of Semifeasible Computation<br />
Authors: Piotr Faliszewski and Lane A. Hemaspaandra<br />
Report-no: URCS-TR-2005-872<br />
Subj-class: Computational Complexity<br />
ACM-class: F.1.3<br />
\<br />
  The study of semifeasible algorithms was initiated by Selman&#8217;s work a quarter<br />
of century ago [Sel79,Sel81,Sel82]. Informally put, this research stream<br />
studies the power of those sets L for which there is a deterministic (or in<br />
some cases, the function may belong to one of various nondeterministic function<br />
classes) polynomial-time function f such that when at least one of x and y<br />
belongs to L, then f(x,y) \in L \cap \{x,y\}. The intuition here is that it is<br />
saying: &#8220;Regarding membership in L, if you put a gun to my head and forced me<br />
to bet on one of x or y as belonging to L, my money would be on f(x,y).&#8221;<br />
  In this article, we present a number of open problems from the theory of<br />
semifeasible algorithms. For each we present its background and review what<br />
partial results, if any, are known.<br />
\ ( <a href="http://arXiv.org/abs/cs/0506082">http://arXiv.org/abs/cs/0506082</a> ,  100kb)</p>
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		<title>Who doesn&#8217;t want to know about Online Bribery?</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/04/28/who-doesnt-want-to-know-about-online-bribery/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/04/28/who-doesnt-want-to-know-about-online-bribery/#comments</comments>
		<pubDate>Thu, 28 Apr 2005 13:02:43 +0000</pubDate>
		<dc:creator>Maverick Woo</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/2005/04/28/who-doesnt-wnat-to-know-about-online-bribery/</guid>
		<description><![CDATA[From arXiv cs daily comes a very interesting paper titled Online Medians via Online Bribery by Marek Chrobak, Claire Kenyon, John Noga and Neal E. Young. Here is part of the abstract:
Our proofs reduce online medians to the following online bribery problem: faced with some unknown threshold T>0, an algorithm must submit &#8220;bids&#8221; b>0 until [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://magic.aladdin.cs.cmu.edu/2005/04/20/subscribe-to-the-arxiv-mailing-list/">From arXiv cs daily comes</a> a very interesting paper titled Online Medians via Online Bribery by Marek Chrobak, Claire Kenyon, John Noga and Neal E. Young. Here is part of the abstract:</p>
<blockquote><p>Our proofs reduce online medians to the following online bribery problem: faced with some unknown threshold T>0, an algorithm must submit &#8220;bids&#8221; b>0 until it submits a bid as large as T. The algorithm pays the sum of its bids. We describe optimally competitive algorithms for online bribery.</p></blockquote>
<p>I suppose this can be a useful skill when I travel to some parts of the world later this summer? <img src='http://magic.aladdin.cs.cmu.edu/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> </p>
<p>Full information:<br />
<span id="more-54"></span><br />
Paper: cs.DS/0504103<br />
Date: Wed, 27 Apr 2005 00:07:32 GMT   (58kb)</p>
<p>Title: Online Medians via Online Bribery<br />
Authors: Marek Chrobak and Claire Kenyon and John Noga and Neal E. Young<br />
Comments: extended abstract<br />
Subj-class: Data Structures and Algorithms<br />
ACM-class: G.1.6; G.2.2; F.2.2<br />
\<br />
  Following Mettu and Plaxton, we study online algorithms for the k-medians<br />
problem. Such an algorithm must produce a nested sequence F_1\subseteq<br />
F_2\subseteq&#8230;\subseteq F_n of sets of facilities. Mettu and Plaxton show that<br />
online metric medians has a (roughly) 40-competitive deterministic<br />
polynomial-time algorithm. We give improved algorithms, including a<br />
(24+\epsilon)-competitive deterministic polynomial-time algorithm and a<br />
5.44-competitive, randomized, non-polynomial-time algorithm.<br />
  We also consider the competitive ratio with respect to size. An algorithm is<br />
s-size-competitive} if, for each k, the cost of F_k is at most the minimum cost<br />
of any set of k facilities, while the size of F_k is at most s k. We present<br />
optimally competitive algorithms for this problem.<br />
  Our proofs reduce online medians to the following online bribery problem:<br />
faced with some unknown threshold T>0, an algorithm must submit &#8220;bids&#8221; b>0<br />
until it submits a bid as large as T. The algorithm pays the sum of its bids.<br />
We describe optimally competitive algorithms for online bribery.<br />
  Our results on cost-competitive online medians extend to approximately metric<br />
distance functions, online fractional medians, and online bicriteria<br />
approximation.<br />
\ ( http://arXiv.org/abs/cs/0504103 ,  58kb)</p>
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		<title>New PCP Proof</title>
		<link>http://magic.aladdin.cs.cmu.edu/2005/04/21/new-pcp-proof/</link>
		<comments>http://magic.aladdin.cs.cmu.edu/2005/04/21/new-pcp-proof/#comments</comments>
		<pubDate>Thu, 21 Apr 2005 18:21:54 +0000</pubDate>
		<dc:creator>Shuchi Chawla</dc:creator>
				<category><![CDATA[Theory and News]]></category>

		<guid isPermaLink="false">http://magic.aladdin.cs.cmu.edu/2005/04/21/new-pcp-proof/</guid>
		<description><![CDATA[Check this out&#8230;. a new 10 page (only!) proof to the PCP theorem due to Irit Dinur:
http://eccc.uni-trier.de/eccc-reports/2005/TR05-046/index.html
Finally I can hope to try to understand the theorem! And supposedly it uses a purely combinatorial amplification lemma.
]]></description>
			<content:encoded><![CDATA[<p>Check this out&#8230;. a new 10 page (only!) proof to the PCP theorem due to Irit Dinur:<br />
<a href="http://eccc.uni-trier.de/eccc-reports/2005/TR05-046/index.html">http://eccc.uni-trier.de/eccc-reports/2005/TR05-046/index.html</a></p>
<p>Finally I can hope to try to understand the theorem! And supposedly it uses a purely combinatorial amplification lemma.</p>
]]></content:encoded>
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		<slash:comments>2</slash:comments>
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