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	<title>Intelligent Data Analysis &#187; Perl</title>
	<atom:link href="http://linoramirez.wordpress.com/category/perl/feed/" rel="self" type="application/rss+xml" />
	<link>http://linoramirez.wordpress.com</link>
	<description>Development of data analysis tools using free and open source software</description>
	<lastBuildDate>Wed, 26 Dec 2007 21:35:56 +0000</lastBuildDate>
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		<title>Intelligent Data Analysis &#187; Perl</title>
		<link>http://linoramirez.wordpress.com</link>
	</image>
			<item>
		<title>Calgary Open Source Systems Festival: The largest free technology event in Calgary</title>
		<link>http://linoramirez.wordpress.com/2007/10/21/calgary-open-source-systems-festival-the-largest-free-technology-event-in-calgary/</link>
		<comments>http://linoramirez.wordpress.com/2007/10/21/calgary-open-source-systems-festival-the-largest-free-technology-event-in-calgary/#comments</comments>
		<pubDate>Sun, 21 Oct 2007 15:27:24 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[News]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/10/21/calgary-open-source-systems-festival-the-largest-free-technology-event-in-calgary/</guid>
		<description><![CDATA[This coming weekend is the Calgary Open Source Systems Festival (COSSFest 2007). For those open source lovers and those curious about open source, this is a must attend event. By the way, I will be giving two talks: one on Machine Learning Development with Perl and another on Open Source Business Analytics.
Here is the official [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=126&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/10/21/calgary-open-source-systems-festival-the-largest-free-technology-event-in-calgary/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>Machine Learning Development with Perl</title>
		<link>http://linoramirez.wordpress.com/2007/09/11/machine-learning-development-with-perl/</link>
		<comments>http://linoramirez.wordpress.com/2007/09/11/machine-learning-development-with-perl/#comments</comments>
		<pubDate>Tue, 11 Sep 2007 19:17:57 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Perl]]></category>
		<category><![CDATA[analytics]]></category>
		<category><![CDATA[knowledge discovery]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/09/11/machine-learning-development-with-perl/</guid>
		<description><![CDATA[I just posted in PerlMonks a draft of a 45 minutes-long talk on Machine Learning Development with Perl. Here is an extract of that post:
&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;
Machine Learning Development with Perl
The development of machine learning applications can be seen as a three-phase process involving: preparation, modeling, and implementation (See Fig. 1).
As a developer, you have to move [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=124&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/09/11/machine-learning-development-with-perl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>Machine Learning Made Easy with Perl (the day before)</title>
		<link>http://linoramirez.wordpress.com/2007/07/24/machine-learning-made-easy-with-perl-the-day-before/</link>
		<comments>http://linoramirez.wordpress.com/2007/07/24/machine-learning-made-easy-with-perl-the-day-before/#comments</comments>
		<pubDate>Tue, 24 Jul 2007 23:21:34 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[OSCON]]></category>
		<category><![CDATA[OSCON07]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/07/24/machine-learning-made-easy-with-perl-the-day-before/</guid>
		<description><![CDATA[ 	 	 	 	 	 	 	
Machine Learning Made Easy with Perl is the name of the session I am giving tomorrow afternoon at OSCON. I really worked hard on this one   It took me more time than I expected to make machine learning easy   I do not want to [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=122&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/07/24/machine-learning-made-easy-with-perl-the-day-before/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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		<item>
		<title>Finding texture descriptors using Perl</title>
		<link>http://linoramirez.wordpress.com/2007/07/13/finding-texture-descriptors-using-perl/</link>
		<comments>http://linoramirez.wordpress.com/2007/07/13/finding-texture-descriptors-using-perl/#comments</comments>
		<pubDate>Fri, 13 Jul 2007 23:30:21 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/07/13/finding-texture-descriptors-using-perl/</guid>
		<description><![CDATA[For an image analysis application I am writing using the PDL, I needed to compute some texture measures. After some research, I decided to go with the measures proposed by Rober Haralick based on the Gray Level Co-occurrence Matrix (GLCM). To make a long story short, I found a nice tutorial on the GLCM and [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=121&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/07/13/finding-texture-descriptors-using-perl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>OSCON 2007: 16 days away</title>
		<link>http://linoramirez.wordpress.com/2007/07/07/oscon-2007-16-days-away/</link>
		<comments>http://linoramirez.wordpress.com/2007/07/07/oscon-2007-16-days-away/#comments</comments>
		<pubDate>Sat, 07 Jul 2007 18:30:07 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[OSCON]]></category>
		<category><![CDATA[OSCON07]]></category>
		<category><![CDATA[Perl]]></category>
		<category><![CDATA[presenting]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/07/07/oscon-2007-16-days-away/</guid>
		<description><![CDATA[ 	 	 	 	 	 	 	
Only 16 days separate us from OSCON and I am still polishing the material for my session   I asked my fellow PerlMonks for feedback on a preliminary version of the presentation&#8217;s outline and as usual the comments were really useful. Based on the comments, I decided [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=120&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/07/07/oscon-2007-16-days-away/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
		</media:content>
	</item>
		<item>
		<title>Generating cool fractals</title>
		<link>http://linoramirez.wordpress.com/2007/06/16/generating-cool-fractals/</link>
		<comments>http://linoramirez.wordpress.com/2007/06/16/generating-cool-fractals/#comments</comments>
		<pubDate>Sun, 17 Jun 2007 00:56:58 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[Open Science]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/06/16/generating-cool-fractals/</guid>
		<description><![CDATA[This one is from the Free Software Magazine. Xavier Calbet wrote:
Whether you are a professional or amateur scientist, engineer or mathematician, if you need to make numerical calculations and plots quickly and easily, then PDL (Perl Data Language) is certainly one of the best free software tools to use. PDL has everything that similar high-level, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=116&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/06/16/generating-cool-fractals/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>PDL Cheat Sheet</title>
		<link>http://linoramirez.wordpress.com/2007/02/20/pdl-cheat-sheet/</link>
		<comments>http://linoramirez.wordpress.com/2007/02/20/pdl-cheat-sheet/#comments</comments>
		<pubDate>Tue, 20 Feb 2007 22:43:35 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Education]]></category>
		<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/02/20/pdl-cheat-sheet/</guid>
		<description><![CDATA[PDL 2.4.3 cheat sheet v2 by Lino Ramirez, Lino.M.Ramirez (at) gmail.com
NOTE:
Piddles are stored in (column, row) order

STARTING &#38; QUITTING THE SHELL       GETTING HELP
perldl    exit    quit              help 'func'    [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=106&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/02/20/pdl-cheat-sheet/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>Getting Started with PDL</title>
		<link>http://linoramirez.wordpress.com/2007/02/13/getting-started-with-pdl/</link>
		<comments>http://linoramirez.wordpress.com/2007/02/13/getting-started-with-pdl/#comments</comments>
		<pubDate>Tue, 13 Feb 2007 17:56:04 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Education]]></category>
		<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/02/13/getting-started-with-pdl/</guid>
		<description><![CDATA[ 	 	 	 	 	 	
Early this month, I wrote an introduction to the Perl Data Language (PDL). Here is the Introduction:

 
Imagine you, Just Another Perl Hacker, were assigned to this new project that involves heavy numerical computation. Most of your peers recommend you to use C or C++. Some others recommend you [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=104&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/02/13/getting-started-with-pdl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="http://0.gravatar.com/avatar/088b167a38ee1e2e006b357fcae58123?s=96&#38;d=identicon&#38;r=G" medium="image">
			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>Fuzzy Clustering using the Perl Data Language</title>
		<link>http://linoramirez.wordpress.com/2007/01/14/fuzzy-clustering-using-the-perl-data-language/</link>
		<comments>http://linoramirez.wordpress.com/2007/01/14/fuzzy-clustering-using-the-perl-data-language/#comments</comments>
		<pubDate>Sun, 14 Jan 2007 15:49:36 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Free and Open Source Software]]></category>
		<category><![CDATA[Perl]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/01/14/fuzzy-clustering-using-the-perl-data-language/</guid>
		<description><![CDATA[Hello,
Here  is a new version of my clustering program using the Perl Data Language.
Cheers,
Lino

#!/usr/bin/perl
use warnings;
use strict;
use PDL;
# fcm: fuzzy c-means implementation in Perl
# usage: $fcm [number_of_clusters] [fuzzification_factor]
#        [max_iter] [tolerace]
# returns: prototypes, partition_matrix
#
#
# reading data
#
my ( @data, @tmp, $number_of_patterns, $max_row_number, $max_column_number );
while (defined(my $line = )) {
chomp ($line);
@tmp [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=99&subd=linoramirez&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://linoramirez.wordpress.com/2007/01/14/fuzzy-clustering-using-the-perl-data-language/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">linoramirez</media:title>
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	</item>
		<item>
		<title>Happy 2007!</title>
		<link>http://linoramirez.wordpress.com/2007/01/10/happy-2007/</link>
		<comments>http://linoramirez.wordpress.com/2007/01/10/happy-2007/#comments</comments>
		<pubDate>Wed, 10 Jan 2007 23:03:05 +0000</pubDate>
		<dc:creator>Lino Ramirez</dc:creator>
				<category><![CDATA[Perl]]></category>
		<category><![CDATA[Personal]]></category>

		<guid isPermaLink="false">http://linoramirez.wordpress.com/2007/01/10/happy-2007/</guid>
		<description><![CDATA[I know I have not updated this Blog in a while but I am back! The last couple of months, I have been quite busy improving my Perl programming skills and learning to use the Perl Data Language (PDL). In the coming posts, I will share my experience using the PDL.
Cheers,
Lino
     [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=linoramirez.wordpress.com&blog=197200&post=98&subd=linoramirez&ref=&feed=1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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