ECJ

1
ECJ

• Overview
• Suggested Plan
• Access and setup
• Tutorials and examples
• Eclipse
• FYI

2
Overview

• Java based
• Very powerful
• LaTeX option for fancy trees
• Some reading and experimentation is necessary

3
Suggested Plan

• Download
• Decide on a development environment
• Eclipse
• Text editor
• Your favorite IDE
• Introduction
• Read ECJ Homepage
• Briefly read parameter files
• Look at Tutorial 1 at least
• Tutorial 4 and examples
• Closely follow 4
• Perform some examples
• Create your own simple example
• Begin work on your final project

4
Access and setup

• Download from http//www.cs.umd.edu/projects/plus/
  ec/ecj/
• Get the documentation from http//www.cs.umd.edu/p
  rojects/plus/ec/ecj/docs/
• Delete the package teambots unless you want to
  do more research about it

5
Tutorials and examples

• You should read through Tutorial 1 and Tutorial 4
  at least.
• You must not skip Tutorial 4
• Read slowly as this is the very core of
  understanding the classes used to represent the
  individuals you will evolve
• There are over 20 different GP examples
• Artificial ant, Boolean multiplexer, lawn-mowers,
  even-odd parity, etc.
• Understand the details of the simple examples
  before you move on

6
Eclipse

• Just a suggestion dont use this unless you
  feel like you want to invest the time in getting
  a very nice IDE
• Download from www.eclipse.org
• Import from file system, make sure you filter
  just the .java

7
FYI

• ECJ does not class-distinguish between functions
  and terminals . Rather, terminals are just
  0-arity functions.
• Parameter files can seem very complicated they
  are really just an inheritance model implemented
  across a set of text files but this can be
  confusing when you first look through it. Read
  through the about parameter files and trace
  through the ones used for a simple example.