CS 5970 Homework 3 — Evolutionary Computation for Problem Solving
Due Wednesday, March 6, 2013
NOTE: The hardcopies of the parts of this assignment are due at
the beginning of the class period. This means that if you are
even a minute late, you lose 20%. If you are worried about
potentially being late, turn in your assignments ahead of
time. Do this by submitting them to me during office hours or by
sliding them under my office door. Electronic copies are due by 4:00
pm on the due date. Submit them through D2L before the time they are
due. Do not send assignments to me through email or leave them in my
departmental mail box.
To use evolutionary computation to solve problems, we need to apply them
to particular problems. To do that, we need to (following De Jong,
Evolutionary Computation: A Unified Approach, p 72):
- decide what an individual in the population represents,
- provide a means for computing the fitness of an individual,
- decide how children (new search points) are generated from parents
(current search points),
- specify population sizes and dynamics,
- define termination criteria for stopping the evolutionary process,
- return an answer
The goals of this assignment are:
- to give you experience with reading papers from the primary,
peer-reviewed literature in evolutionary computation, and
- to give you experience with dissecting such papers and understanding
how evolutionary computation models are implemented for particular
Read the paper "Phenotype
Feedback Genetic Algorithm Operators for Heuristic Encoding of Snakes
within Hypercubes" by Carlson and Hougen (from the Genetic and
Evolutionary Computation Conference, July 2010) then answer the questions
below regarding the GA in this paper.
- What does an individual in the population represent?
- Is this a fixed-length linear object, a fixed-length nonlinear
object, a variable-length linear object, or a nonlinear variable-length
- How is each individual encoded?
- Is this encoding genotypical or phenotypical?
- How is fitness calculated for each individual in the population?
- What reproductive operators are used?
- What parameters are used for each of the reproductive operators?
- What is the parent population size?
- What is the offspring population size?
- Is an overlapping or non-overlapping generation model used?
- What stopping criteria are used?
- What answers are returned?
4. What to Turn In
You will turn in both a typed hard copy and a machine readable
electronic copy of your homework that answers the questions above.