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	<id>http://openworld.existencia.org:80/index.php?action=history&amp;feed=atom&amp;title=System_Regression</id>
	<title>System Regression - Revision history</title>
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	<updated>2026-04-21T21:46:54Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://openworld.existencia.org:80/index.php?title=System_Regression&amp;diff=129&amp;oldid=prev</id>
		<title>Jrising at 16:18, 13 April 2012</title>
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		<updated>2012-04-13T16:18:03Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Entropy rates of spatially distributed state machines&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
It&amp;#039;s easy to calculate the entropy rate of a single non-deterministic state machine.  What is the spatial and temporal entropy characteristics for a grid of cellular automata?  I&amp;#039;ll focus on a conformist model: each cell switches between two states, based on the portion of neighbors of that state.  What is H(X_i | X_-i) (that is, the entropy of a cell given the entire rest of the graph), H(X_i,t | X_i,t-1, ..., X_i,1), and H(X_i | f({X}))?  I&amp;#039;ll also do experiments and empirical estimates of entropy.&lt;/div&gt;</summary>
		<author><name>Jrising</name></author>
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