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Lesson4 advancing

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evomarc 2001-05-03 05:44:29 +00:00
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eo/tutorial/html/eoCheckPoint.html
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@ -2,7 +2,7 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="Mozilla/4.76 [en] (X11; U; Linux 2.2.17-21mdksmp i686) [Netscape]">
<meta name="GENERATOR" content="Mozilla/4.73 [en] (X11; I; Linux 2.2.15-4mdk i686) [Netscape]">
<title>Variation Operators</title>
</head>
<body text="#000000" link="#0000EF" vlink="#51188E" alink="#FF0000" background="beige009.jpg">
@ -23,7 +23,12 @@ continuators</a> - <a href="#checkpoint">Checkpoints</a> - <a href="#statistic">
<b><font color="#CC0000">CheckPointing</font></b></h1></center>
<a NAME="introduction"></a><b><font color="#000099"><font size=+2>What
is Checkpointing about?</font></font></b>
<br>Evolutionary Algorithms are ticked
<br>Evolutionary Algorithms are almost all timely ticked, the basic time
unit being what is called a generation. EO checkpointing mechanism allow
you to program things that you want to be done at the end of every generation.
This includes deciding to stop, outputing some statistics on the current
state of the algorithm,&nbsp; updating some dynamical variables of your
algorithm, saving the population to disk, ...
<p><b><font color="#FF0000">EO classes described in this page</font></b>:
<ul>
<li>
@ -34,7 +39,8 @@ eoStat, eoSortedStat, eoMonitor, eoUpdater</li>
<b><font color="#FF0000">Derived classes</font></b>: eoCombinedContinue,</li>
<li>
<b><font color="#FF0000">Related classes</font></b>: eoGnuPlot</li>
<b><font color="#FF0000">Related classes</font></b>: eoGnuPlot1DMonitor,
eoGnuPlot1DSnapshotMonitor,</li>
</ul>
<br>&nbsp;
@ -48,7 +54,8 @@ means that the algorithm stops only when the continuator returns <b><font color=
<p><b><font color="#FF0000">Interface</font></b>:&nbsp; The abstract class
for computing stopping conditions is <b><font color="#3366FF">eoContinue</font></b>,
and the interface for its operator() is
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<b><tt><font color="#993300"><font size=+1>bool operator()(const eoPop&lt;EOT>&amp;
)</font></font></tt></b>
<p>which you could have guessed from the <a href="../../doc/html/class_eocontinue.html">inheritance
@ -79,15 +86,16 @@ passed at construct time. Don't forget to <b><font color="#FF6600">returnfalse</
when the stopping criterion <b><font color="#FF6600">is met!</font></b></li>
</ul>
<a NAME="existingContinue"></a><b><font color="#FF0000">Existing continuators:
</font></b>Of course you can find out all existing (non-virtual!) subclasses
of eoContinue by looking at its&nbsp; <a href="../../doc/html/class_eocontinue.html">inheritance
</font></b>Of
course you can find out all existing (non-virtual!) subclasses of eoContinue
by looking at its&nbsp; <a href="../../doc/html/class_eocontinue.html">inheritance
diagram</a>. But you might find it more convenient to have them listed
here:
<ul>
<li>
</li>
</ul>
<b><font color="#FF0000"></font></b>
<p><br>
<hr WIDTH="100%"><a NAME="combined_continue"></a><b><font color="#000099"><font size=+1>Combining
continuators:</font></font></b>
@ -101,8 +109,8 @@ boolean result as an eoContinue.
<p><a NAME="writing_checkpoint"></a><b><font color="#FF0000">Writing a
checkpoint:</font></b>
<br>This is something you should never have to do. However, should you
fell you have to do it, please do - and send us both the reasons that lead
you to that (wqhat is it you couldn't do with existing eoCheckPoint), and
feel you have to do it, please do - and send us both the reasons that lead
you to that (what is it you couldn't do with existing eoCheckPoint), and
the resulting code, of course.
<br>
<hr WIDTH="100%"><a NAME="statistic"></a><b><font color="#000099"><font size=+1>Statistics:</font></font></b>