Lab 3

This lab is not to be handed in.

Specifically, you will work through part of the tutorial that is available at The PDP++ Software Users Manual. (Please note that I only guarantee that this link is accessible on the lab computers.)

In particular, you should:

• Look at the already-constructed simulator of a neural network that solves the XOR problem using a single hidden layer. To do this, you should go to chapter 4: Tutorial Introduction (using Bp), skim through the background section (4.1: Backpropagation and XOR), and work through the actual simulator (section 4.2: Using the Simulator to run BP on the XOR Example).

  By the way, to run this simulation, you should launch an xterm, cd to the directory /usr/share/pdp/demo/bp, and then type bp++.

• If you have time, you may continue with the tutorial and construct a neural network that solves the 4-2-4 encoder problem. This is described in section 4.3: Configuring the Encoder Problem.

  Recommendation: Do not record a script file as the suggest in section 4.3.1: Recording a Script File of Your Actions. You may want to do this with later projects, but it gets in the way here.