Software

•Kohonen 1.5.1

(download below)

This is the first application I ever wrote for Mac OS X, so please be forgiving :-)

Kohonen is a test application for my little Self Organizing Map (SOM) library. Basically, it allows you to experiment with most of the neural network and learning parameters and see their effect in real-time. If you don't know anything about Self Organizing Maps, this application can be used to generate pretty pictures (even if it is definitely not the goal here!) :-)

The screenshots bellow should help you figure out how to play with the different parameters. Experiment!

A 2-dimensional network with 3-dimensional input vectors.

During the learning phase, the 2-D network tries to “occupies” the whole 3-D space. Nodes “close” to each other in the 2-D network, respond to inputs in the 3-D space “close” to each other.

A 1-dimensional network with 2-dimensional input vectors.

Here the 1-D network does its best to map its 2-D input space.

A 2-dimensional network with 3-dimensional input vectors.

This is similar to the first picture, but here the network is fed with a predefined set of input vectors. Observe how similar colors (inputs) end-up next to each other in the 2-D network.

Here are a few BeOS software I wrote. Nothing exciting though.
Note that I'm not maintaining these applications anymore.

•Stella 1.2.1
This a port to BeOS of Stella the famous Atari VCS2600 emulator.
Stella was originally developed by Bradford W. Mott. Go to Stella's home page.

stella.1.2.1-beos.zip [1.1 MB]
•nothing 1.0
This does nothing.

nothing.zip [19 KB]
•nothing 2.0
Nothing 2.0 does even less.

nothing-2.0.zip [13 KB]
•BAE Midiplayer
Here is a simple midi player that uses Beatnik's Audio Engine (BAE™) available in BeOS 5.0.

BAE_MidiPlayer.zip [60 KB]

Download Kohonen.dmg [196 KB] (universal binary application for Mac OS 10.4 and later)

Please let me know what you think!