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| Content Provider | ACM Digital Library |
|---|---|
| Author | Fernandes, Carlos Gagné, Christian Merelo, Juan Julián Laredo, Juan Luís J. |
| Abstract | Despite the intuition that the same population size is not needed throughout the run of an Evolutionary Algorithm (EA), most EAs use a fixed population size. This paper presents an empirical study on the possible benefits of a Simple Variable Population Sizing (SVPS) scheme on the performance of Genetic Algorithms (GAs). It consists in decreasing the population for a GA run following a predetermined schedule, configured by a speed and a severity parameter. The method uses as initial population size an estimation of the minimum size needed to supply enough building blocks, using a fixed-size selectorecombinative GA converging within some confidence interval toward good solutions for a particular problem. Following this methodology, a scalability analysis is conducted on deceptive, quasi-deceptive, and non-deceptive trap functions in order to assess whether SVPS-GA improves performances compared to a fixed-size GA under different problem instances and difficulty levels. Results show several combinations of speed-severity where SVPS-GA preserves the solution quality while improving performances, by reducing the number of evaluations needed for success. |
| Starting Page | 819 |
| Ending Page | 826 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781605583259 |
| DOI | 10.1145/1569901.1570014 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2009-07-08 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Self-adaptation Parameter tuning Performance analysis Adaptation Genetic algorithms |
| Content Type | Text |
| Resource Type | Article |
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