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    <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302</link>
    <title>MATLAB Central Newsreader - why do you contribute to File Exchange?</title>
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    <ttl>60</ttl>
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    <item>
      <pubDate>Thu, 25 Oct 2007 10:09:16 -0400</pubDate>
      <title>why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398329</link>
      <author>sylva Wong</author>
      <description>I am amazed to see so many valuable matlab codes on this &lt;br&gt;
community.Sure I will recommend this website to my &lt;br&gt;
classmates. Just curiously ask a question as my post title.&lt;br&gt;
&lt;br&gt;
The self-satisfaction?&lt;br&gt;
The motivation for self-improvement?&lt;br&gt;
There seems no any other practical benefit like &lt;br&gt;
bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
contributor by Mathworks.&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 10:22:58 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398332</link>
      <author>David </author>
      <description>"sylva Wong" &amp;lt;sylva2004@sina.com&amp;gt; wrote in message &lt;br&gt;
&amp;lt;ffpq0c$85h$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; I am amazed to see so many valuable matlab codes on this &lt;br&gt;
&amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; classmates. Just curiously ask a question as my post &lt;br&gt;
title.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; contributor by Mathworks.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; &lt;br&gt;
&lt;br&gt;
because some of us hate to see anyone have to re-invent &lt;br&gt;
the wheel.&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 10:35:11 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398333</link>
      <author>sylva Wong</author>
      <description>"David " &amp;lt;dave@bigcompany.com&amp;gt; wrote in message &amp;lt;ffpqq2$gk0&lt;br&gt;
$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; "sylva Wong" &amp;lt;sylva2004@sina.com&amp;gt; wrote in message &lt;br&gt;
&amp;gt; &amp;lt;ffpq0c$85h$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; &amp;gt; I am amazed to see so many valuable matlab codes on &lt;br&gt;
this &lt;br&gt;
&amp;gt; &amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; &amp;gt; classmates. Just curiously ask a question as my post &lt;br&gt;
&amp;gt; title.&lt;br&gt;
&amp;gt; &amp;gt; &lt;br&gt;
&amp;gt; &amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; &amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; &amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; &amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; &amp;gt; contributor by Mathworks.&lt;br&gt;
&amp;gt; &amp;gt; &lt;br&gt;
&amp;gt; &amp;gt; &lt;br&gt;
&amp;gt; &amp;gt; &lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; because some of us hate to see anyone have to re-invent &lt;br&gt;
&amp;gt; the wheel.&lt;br&gt;
&amp;gt; &lt;br&gt;
thanks.that really counts&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 11:36:16 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398344</link>
      <author>John D'Errico</author>
      <description>"sylva Wong" &amp;lt;sylva2004@sina.com&amp;gt; wrote in message &amp;lt;ffpq0c$85h&lt;br&gt;
$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; I am amazed to see so many valuable matlab codes on this &lt;br&gt;
&amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; classmates. Just curiously ask a question as my post title.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; contributor by Mathworks.&lt;br&gt;
&lt;br&gt;
There are probably as many reasons for&lt;br&gt;
contributing as there are contributors. Don't&lt;br&gt;
let yourself really feel that nothing should&lt;br&gt;
ever be done where no direct rewards are&lt;br&gt;
provided.&lt;br&gt;
&lt;br&gt;
Give something back to the world.&lt;br&gt;
&lt;br&gt;
John&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 12:17:01 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398350</link>
      <author>Duane Hanselman</author>
      <description>"sylva Wong" &amp;lt;sylva2004@sina.com&amp;gt; wrote in message&lt;br&gt;
&amp;lt;ffpq0c$85h$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; I am amazed to see so many valuable matlab codes on this &lt;br&gt;
&amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; classmates. Just curiously ask a question as my post title.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; contributor by Mathworks.&lt;br&gt;
&lt;br&gt;
For me it is totally and absolutely a self-centered ego&lt;br&gt;
need. I crave the adoration of the world. I have come to&lt;br&gt;
accept that I will never be the dictator of a country that&lt;br&gt;
commands attention of the free world, so I figure this is&lt;br&gt;
the next best thing.&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
&lt;br&gt;
Not.&lt;br&gt;
&lt;br&gt;
In reality, I get a lot of grief from my employer and peers&lt;br&gt;
for doing things like write books (10 so far) and contribute&lt;br&gt;
to the FEX. So maybe I have a need to be chastised?&lt;br&gt;
&lt;br&gt;
"Mastering MATLAB 7" by the account of one reviewer on&lt;br&gt;
Amazon.com is simply the stealing of material from the&lt;br&gt;
MATLAB documentation.&lt;br&gt;
&lt;br&gt;
No good deed goes unpunished.&lt;br&gt;
&lt;br&gt;
Yes. I agree with what John D. says in this thread. Give&lt;br&gt;
back to the world without strings attached. You will sleep&lt;br&gt;
better at night.&lt;br&gt;
&lt;br&gt;
Duane&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 12:52:43 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398355</link>
      <author>Idin Motedayen-Aval</author>
      <description>sylva Wong wrote:&lt;br&gt;
&amp;gt; I am amazed to see so many valuable matlab codes on this &lt;br&gt;
&amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; classmates. Just curiously ask a question as my post title.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; contributor by Mathworks.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; &lt;br&gt;
&lt;br&gt;
I suppose for the same reason that people write elaborate articles for &lt;br&gt;
Wikipedia.  I once heard someone say it's one of those things that only &lt;br&gt;
works in practice, and not in theory. :)&lt;br&gt;
&lt;br&gt;
Idin&lt;br&gt;
&lt;br&gt;
-- &lt;br&gt;
Idin Motedayen-Aval&lt;br&gt;
The MathWorks, Inc.&lt;br&gt;
zq=[4 2 5 -15 -1 -3 24 -57 45 -12 19 -12 15 -8 3 -7 8 -69 53 12 -2];&lt;br&gt;
char(filter(1,[1,-1],[105 zq])), clear zq&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Thu, 25 Oct 2007 13:16:08 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398359</link>
      <author>dpb</author>
      <description>sylva Wong wrote:&lt;br&gt;
&amp;gt; I am amazed ...&lt;br&gt;
&lt;br&gt;
To add to the others' comments...&lt;br&gt;
&lt;br&gt;
Does the Red Cross likewise amaze you?&lt;br&gt;
&lt;br&gt;
--&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Fri, 26 Oct 2007 06:10:59 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398480</link>
      <author>sylva Wong</author>
      <description>dpb &amp;lt;none@non.net&amp;gt; wrote in message &amp;lt;ffq54v$998&lt;br&gt;
$1@aioe.org&amp;gt;...&lt;br&gt;
&amp;gt; sylva Wong wrote:&lt;br&gt;
&amp;gt; &amp;gt; I am amazed ...&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; To add to the others' comments...&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; Does the Red Cross likewise amaze you?&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; --&lt;br&gt;
&lt;br&gt;
I am always amazed to see the good things in the world.&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Fri, 26 Oct 2007 08:37:27 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398495</link>
      <author>Bjorn Gustavsson</author>
      <description>"sylva Wong" &amp;lt;sylva2004@sina.com&amp;gt; wrote in message&lt;br&gt;
&amp;lt;ffpq0c$85h$1@fred.mathworks.com&amp;gt;...&lt;br&gt;
&amp;gt; I am amazed to see so many valuable matlab codes on this &lt;br&gt;
&amp;gt; community.Sure I will recommend this website to my &lt;br&gt;
&amp;gt; classmates. Just curiously ask a question as my post title.&lt;br&gt;
&amp;gt; &lt;br&gt;
&amp;gt; The self-satisfaction?&lt;br&gt;
&amp;gt; The motivation for self-improvement?&lt;br&gt;
&amp;gt; There seems no any other practical benefit like &lt;br&gt;
&amp;gt; bonus,rewards,software permission,etc., are paid to the &lt;br&gt;
&amp;gt; contributor by Mathworks.&lt;br&gt;
&amp;gt; &lt;br&gt;
Because I'm very lazy.&lt;br&gt;
&lt;br&gt;
So fex helped me get tasks done without much toil of my own.&lt;br&gt;
&lt;br&gt;
Lazy I am but not very greedy so I figured I could try to&lt;br&gt;
ease someones struggle by offering what I had to do myself...&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Sat, 27 Oct 2007 16:10:44 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398652</link>
      <author>Tim Davis</author>
      <description>"Bjorn Gustavsson" &amp;lt;bjonr@irf.se&amp;gt; wrote in message ...&lt;br&gt;
&lt;br&gt;
A very good question.  There are many reasons.  Some are&lt;br&gt;
very selfless, while others give me indirect benefit, and&lt;br&gt;
some give me direct benefit.&lt;br&gt;
&lt;br&gt;
I'm an academic.  Like all academics, I get paid to create&lt;br&gt;
new knowledge (research) and then pass that knowledge onto&lt;br&gt;
others (teaching students, publishing papers, etc).  No one&lt;br&gt;
actually looks to see how many codes I post at the file&lt;br&gt;
exchange and then correlates that back into, say, my&lt;br&gt;
performance evaluation, but part of my annual performance&lt;br&gt;
evaluation is related to how much impact my work is having&lt;br&gt;
on the field as a whole.  So there is an intangible reward&lt;br&gt;
for me to post codes.&lt;br&gt;
&lt;br&gt;
Writing a sparse matrix code is not for the faint-at-heart;&lt;br&gt;
unlike some areas of research, I can't just publish the&lt;br&gt;
pseudo-code in a journal article and expect others to&lt;br&gt;
implement the code themselves (~50k lines of code just to do&lt;br&gt;
sparse LU is a bit daunting).  So to "pass that knowledge"&lt;br&gt;
on to others, I write the code myself and it becomes part of&lt;br&gt;
my "publication" list.  Most of my File Exchange codes also&lt;br&gt;
appear as published algorithms of the ACM, for which I do&lt;br&gt;
get a direct benefit from via my annual performance&lt;br&gt;
evaluation (more impact, more papers, more research = higher&lt;br&gt;
raises, promotions, etc).  So you can already get my code&lt;br&gt;
from the ACM - it's a simple matter to also make the code&lt;br&gt;
available at the File Exchange.&lt;br&gt;
&lt;br&gt;
My salary comes from taxes paid in Florida, and from federal&lt;br&gt;
taxes (via grant funds).  So it seems reasonable to pass the&lt;br&gt;
fruits of my labor back to the people who paid for it.&lt;br&gt;
&lt;br&gt;
</description>
    </item>
    <item>
      <pubDate>Sat, 27 Oct 2007 17:36:15 -0400</pubDate>
      <title>Re: why do you contribute to File Exchange?</title>
      <link>http://www.mathworks.com/matlabcentral/newsreader/view_thread/158302#398656</link>
      <author>Tim Davis</author>
      <description>There is another benefit I forgot to mention.&lt;br&gt;
&lt;br&gt;
Suppose I write a code that I intend just to use for myself.&lt;br&gt;
&amp;nbsp;It would take too much to turn it into a commercial&lt;br&gt;
product.  I may be an academic, or in industry, either one.&lt;br&gt;
&lt;br&gt;
If I keep the code to myself, only I benefit from it.  Also,&lt;br&gt;
however, I'm the only one who can improve it.&lt;br&gt;
&lt;br&gt;
If I post it as open source then others can benefit, but I&lt;br&gt;
can benefit too.  I get others to use the code who find it&lt;br&gt;
useful, and then they contribute to the code.  In the end,&lt;br&gt;
for sharing my code, I get a better code that I can use myself.&lt;br&gt;
</description>
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