Category Archives: Software

Easy, reliable, and flexible storage for Python

Posted on August 13, 2009 by xavier

A while ago I wrote a little post about alternative column stores. One that I mentioned was Tokyo Cabinet (and its associated server Tokyo Tyrant. Tokyo Cabinet it is a key-value store written in C and with bindings for multiple languages (including Python and Java). It can maintain data bases in memory or spin them [...]

Related posts:

  1. Temporary storage for Meandre’s distributed flow execution
  2. Efficient storage for Python
  3. A simple and flexible GA loop in Python

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Meandre overview slides

Posted on April 2, 2009 by xavier

On May 26th I gave a seminar about Meandre’s basics at the Computer Science department at University of Illinois . The talk was part of the Cloud Computing Seminars. I merged together slides I have been using to talk about Meandre, and tried to give it an easy to grasp overview flavor. You view [...]

Related posts:

  1. An Overview of the DISCUS project
  2. Meandre: Semantic-Driven Data-Intensive Flows in the Clouds
  3. Meandre 1.4.0 released, 1.4.1 coming short after

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Squeezing for cycles

Posted on April 1, 2009 by xavier

Sometimes thinking a bit helps to rush decisions that may lead to weird places. Today I was going over a simple genetic algorithm for numeric optimization written in C. The code is nothing special, tournament selection without replacement, SBX crossover operator, and polynomial mutation. To the point, I was running a simple OneMax-like problem (in [...]

Related posts:

  1. Evaluation consistency in iGAs: User contradictions as cycles in partial-ordering graphs
  2. A simple and flexible GA loop in Python
  3. Fast mutation implementation for genetic algorithms in Python

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Efficient serialization for Java (and beyond)

Posted on February 4, 2009 by xavier


I am currently working on the distributed execution of flows as part of the Meandre infrastructure—as a part of the SEASR project. One of the pieces to explore is how to push data between machines. No, I am not going to talk about network protocols and the like here, but how you can pass the [...] Continue reading →

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Need a quick form on your WordPress site?

Posted on January 27, 2009 by xavier


cForms is a WordPress plugin that allows you to quickly add forms on your site. The plugin will allow you to collect information from visitors easily. Besides mail notifications, it also provides database back-ended tracking. Pretty convenient if you have to boost the usefulness of your site. Two examples I have more or less been involved is [...] Continue reading →

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FireStats: Statistics on fire for WordPress sites

Posted on January 25, 2009 by xavier


I have been using FireStats for gathering statistics on WordPress sites for more than a couple of years now. I mainly use FireStats combined with WordPress Stats, and Google Analytics. Each of them give you different views into traffic, but FireStats is by far quick and fast and give you a good overall picture you can dig down using WordPress [...] Continue reading →

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E2K blog has moved

Posted on August 2, 2007 by xavier

The E2K blog has moved. You can reach it at http://dita.ncsa.uiuc.edu/e2k/

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XCSFJava 1.1

Posted on August 1, 2007 by xavier

XCSFJava 1.1 code authored by Martin V. Butz was posted online and its documentation was posted as Missouri Estimation of Distribution Algorithms Laboratory Technical Report No. 2007008. Click here to access MEDAL software, or here to access MEDAL reports.

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E2K: Evolution to knowledge

Posted on October 21, 2006 by xavier

Evolution to Knowledge (E2K) is a set of Data to Knowledge (D2K) modules and itineraries that perform genetic algorithms (GA) and genetics-based machine learning (GBML) related tasks. The goal of E2K is to fold: simplify the process of building GA/GBML … Continue reading →

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GALE is back

Posted on May 21, 2006 by xavier

Xavier Llorà has just update the webpage about GALE. GALE can be reached and downloaded here.

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