Example application - canonical genetic algorithm, Computer Engineering

Example Application:

There are many fantastic applications of genetic algorithms. Conceivably my favorite is their usage in evaluating Jazz melodies done as part of a PhD project in Edinburgh.

However the one we look at here is chosen because it demonstrates how a fairly lightweight effort using GAs can often be highly effective. Hence in their paper "The Application of Artificial Intelligence to Transportation System Design", Ricardo Hoar and Joanne Penner explain their undergraduate project that involved representing vehicles on a road system as autonomous agents, and utilizing. In fact GA approaches to evolve solutions to the timing of traffic lights to increase there the traffic flow in the system. Therefore the optimum settings for where lights come on and go off is known only for very simple situations, so an AI-style search can be used to try and find good solutions. Hoar and Penner chose to do this in an evolutionary fashion. They don't give details of the representation scheme they used, but traffic light times are real-valued numbers, so they could have used a bit-string representation. 

Therefore the evaluation function they utilize involved the total waiting time and total driving time for each car in the system as follows like: 

137_Example Application.png

Hence the results they produced were good as worthy of writing a paper. So the two graphs below describe the decrease in overall waiting time for a simple road and for a more complicated road as albeit not amazingly complicated. 

We see that in both cases, the waiting time has roughly halved, which is a good result. In the first case, for the simple road system, the GA evolved a solution verysimilar to the ones worked out to be optimal by humans. We see that GAs can be used to find good near-optimal solutions to problems where a more cognitive approach might have failed as i.e., humans still can't work out how best to tune traffic light times, but a computer can evolve a good solution.

Posted Date: 1/12/2013 6:24:26 AM | Location : United States







Related Discussions:- Example application - canonical genetic algorithm, Assignment Help, Ask Question on Example application - canonical genetic algorithm, Get Answer, Expert's Help, Example application - canonical genetic algorithm Discussions

Write discussion on Example application - canonical genetic algorithm
Your posts are moderated
Related Questions
Q. Illustrate the working of Encoders? An Encoder performs reverse function of decoder. An encoder has 2n input lines and 'n' output line. Let's see 8 ×3 encoder that encodes 8

How is Secure Sockets Layer relied on the certificates? The Secure Sockets Layer standard is not a single protocol, but quite a set of accepted data transfer routines which a

Any function can be expressed in a truth table.A truth table lists all possible combinations ofinputs and gives the output produced in eachcase.Truth tables must include all combin

Consider a processor with a 4-stage pipeline. Each  time a conditional branch is encountered, the pipeline must be flushed (3 partially completed instructions are lost). Determine

Control Dependence Segments or Instructions in a program can include control structures. So, dependency among statements is able to be in control structures also. However the

Rational Testmanager is a complicated tool that can be used for automating performance tests on client/server systems. A client/server system have client applications accessing a d

draw input and output charectoristics of BJT and justify CE configuration provides large current amplification

What is the advantage or disadvantage of using INADDR_ANY instead of the IP address of the computer running on the server? The format of TCP/IP, structure sockaddr_in defines u

Voice synthesis Loud speakers and special software are used to output information in the form of sound to help blind and partially-sighted people; it also helps people who have d

The largest and the second largest number from a set of n distinct numbers can be found in    O (n)