Meka 1.7.3 now on Maven Central

Just published the new Meka 1.7.3 release on Maven Central. The next release will hopefully contain a rudimentary Experimenter API and maybe a GUI as well. :-)

Posted on September 29, 2014 at 9:32 am by fracpete · Permalink · Leave a comment
Tagged with: , , ,

Weka packages on Maven Central

Finally, I had some time to make some of my Weka packages available on Maven Central, to make them easier to use for Maven projects:

Posted on September 23, 2014 at 9:46 am by fracpete · Permalink · Leave a comment
Tagged with: ,

python-weka-wrapper 0.1.11 released

This release resulted in a slimmed down version of the library, since I moved the wekaexamples module to a separate github project:
https://github.com/fracpete/python-weka-wrapper-examples
This makes it easier to add examples without having to release new versions of the library itself.

Also, some more additions and fixes:

Posted on September 22, 2014 at 11:30 am by fracpete · Permalink · Leave a comment
Tagged with: , ,

jcamp-dx on Maven Central

…and the artifacts (legacy and first maven-based release) are on Maven Central:

http://search.maven.org/#search|ga|1|a:”jcamp-dx”

Still impressed by the quick resolution of requests over at sonatype. :-)

Posted on September 4, 2014 at 5:10 pm by fracpete · Permalink · Leave a comment
Tagged with: ,

jcamp-dx

Libraries that are essential to ones own projects, but no longer maintained, can be annoying. Today was just another occasion, where I forked an existing library and upgraded/fixed it. This time, the library jcamp-dx is for reading spectral data files.

The original project is hosted on sourceforge.net:
http://sourceforge.net/projects/jcamp-dx/

The new home of the project (and also mavenized) is here:
https://code.google.com/p/jcamp-dx/

As soon as the project has been approved for Maven Central, I’ll be deploying legacy and new artifacts. :-)

Posted on September 2, 2014 at 3:27 pm by fracpete · Permalink · Leave a comment
Tagged with: ,

vim-airline

If you feel like your vim/gvim needs sprucing up a bit, how about giving it a nice informative line at the bottom of the screen, using vim-airline:

vim-airline

Posted on August 20, 2014 at 12:50 pm by fracpete · Permalink · Leave a comment
Tagged with: ,

Maintenance release for collective-classification

Just made a new maintenance release available for the collective-classification project: it now works with Weka 3.7.11. You can download the Weka package from here:

https://drive.google.com/folderview?id=0B4q6REcT3R4WcmN0bElLRHJUbHc&usp=sharing

Posted on August 20, 2014 at 10:40 am by fracpete · Permalink · Leave a comment
Tagged with: , ,

Plant Protection Society Presentation

Earlier this year, I got invited to give a talk at the Plant Protection Society Symposium titled The plant protection data toolbox: On beyond t, F and χ, thanks to my expertise in data mining.
Despite me drawing the short straw in getting the last slot for the day – right before drinks and nibbles – my talk was well received. I did various analyses of an aphid-related dataset and also showed briefly a project that I’m working on with Cropwatch BV in regards to insect classification – all using ADAMS/WEKA, of course. Generated a few interesting conversations after my talk, which was really great.
The only downside was getting up at 5am and getting back home by 10pm… But well worth it!

Posted on August 11, 2014 at 8:57 pm by fracpete · Permalink · Leave a comment
Tagged with: , ,

Visualizing confusion matrices

I always wanted to be able to visualize large confusion matrices as a heatmap. Making it easier to visualize where misclassifications hot spots are. Hence I started another plugin project for the Weka Explorer

https://github.com/fracpete/confusionmatrix-weka-package

It offers, at the moment, the following visualizations:

Here is an example of the heatmap visualization, using the matrix generated by J48 on the UCI dataset optdigits:

optdigits-heatmap

Posted on August 5, 2014 at 4:23 pm by fracpete · Permalink · Leave a comment
Tagged with: , ,

Tree visualization

On the weekend, I was working on a paper and wanted to have nice diagrams of J48 trees. However, the default visualization in Weka is anything but great looking. Due to lack of Java libraries, I hacked together a little plugin for the Explorer that allows you to use the GraphViz executable dot to generate and display an image:

https://github.com/fracpete/graphviz-treevisualize-weka-package

You can install a release using Weka’s package manager.

Here is an example J48 tree generated for the UCI dataset iris:
j48-iris

Posted on August 5, 2014 at 2:25 pm by fracpete · Permalink · Leave a comment
Tagged with: , ,