Computer Floss » evolution

Manny Lehman dies

Fri, 14 Jan 2011 10:12:35 +0000

Sad news. Professor Manny Lehman passed away a few weeks ago. Someone I would very much like to have met, he was the originator of the laws of software evolution, a subject which served as a foundation stone of my own PhD thesis, thus making me particularly indebted to his contributions.

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An Open Source Eco-System?

Mon, 06 Sep 2010 09:48:17 +0000

To summarise the prior writings from my doctoral thesis: I’ve shown how there are both notable differences and similarities between certain measures of FLOSS repositories (such as number of contributors attracted, rate of contributions, complexity control work, etc.) The pattern of similarities and differences that emerged clearly differentiated one group (containing Debian, GNOME, and KDE) […]

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The Catalyst Effect in FLOSS Repositories

Mon, 26 Apr 2010 06:56:07 +0000

In the course of my PhD studies, I proposed that when a project makes a transition from one repository to another, you could expect to see significant changes to a project’s evolutionary characteristics. Indeed, I covered this in earlier posts, discussing the transition from SourceForge to Debian. Here, we saw that the number of developers […]

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Continuing the Empirical Results: Anti-Regressive Work

Mon, 19 Apr 2010 05:34:35 +0000

It has been a while since I wrote about my research into FLOSS, for which there are a few reasons. When last I wrote I was approaching my PhD defence, and for the whole PhD process to come to an end I had to wait until January this year, when my thesis was officially approved. […]

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The Six-Way Epic: Digging Further into FLOSS Repositories

Tue, 01 Sep 2009 14:06:57 +0000

Not too long ago, I announced the publishing of my first journal article co-authored with Andrea Capiluppi and Cornelia Boldyreff. My mother was very proud — even if she did not understand a single word of it. I will give a brief summary of the article in this post, and if I succeed in whetting […]

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Journal Publication Confirmed

Wed, 25 Mar 2009 23:14:53 +0000

Excellent. The journal publication I co-authored with Andrea Capiluppi and Cornelia Boldyreff (“Identifying exogenous drivers and evolutionary stages in FLOSS projects”) has now been confirmed for publication in the May 2009 edition of Journal of Systems and Software. It is currently available online.

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Digital Archaeology

Tue, 10 Mar 2009 08:11:36 +0000

Part of the use to which I’d like to put this blog is to disseminate information about research methods and tools. But before I start writing posts with involved details it’s probably prudent to present some sort of overview of the whole thing. Of course, there is no single method that is used by all […]

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Debian vs. SourceForge – Round 3

Sun, 22 Feb 2009 08:21:48 +0000

The tour through the comparison between Debian and SourceForge comes to a close by questioning whether Debian acts as a catalyst to evolutionary activity when a project is inserted into the repository. It has already been strongly suggested that projects packaged in Debian are recipients of significantly greater rates of activity. Of the 50 projects […]

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