Abstract
We consider noisy optimization and some traditional variance reduction techniques aimed at improving the convergence rate, namely (i) common random numbers (CRN), which is relevant for population-based noisy optimization and (ii) stratified sampling, which is relevant for most noisy optimization problems. We present artificial models of noise for which common random numbers are very efficient, and artificial models of noise for which common random numbers are detrimental. We then experiment on a desperately expensive unit commitment problem. As expected, stratified sampling is never detrimental. Nonetheless, in practice, common random numbers nonetheless provided, by far, most of the improvement.
Original language | English |
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Title of host publication | GECCO 2015 : Companion Publication of the 2015 Genetic and Evolutionary Computation Conference |
Editors | Sara SILVA |
Publisher | Association for Computing Machinery, Inc |
Pages | 1377-1378 |
Number of pages | 2 |
ISBN (Electronic) | 9781450334884 |
DOIs | |
Publication status | Published - 11 Jul 2015 |
Externally published | Yes |
Event | 17th Genetic and Evolutionary Computation Conference, GECCO 2015 - Madrid, Spain Duration: 11 Jul 2015 → 15 Jul 2015 |
Conference
Conference | 17th Genetic and Evolutionary Computation Conference, GECCO 2015 |
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Country/Territory | Spain |
City | Madrid |
Period | 11/07/15 → 15/07/15 |
Keywords
- Common random numbers
- Noisy optimization
- Stratified sampling
- Variance reduction