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Tikhonov Regularization as a Complexity Measure in Multiobjective Genetic Programming
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DOI：10.1109/TEVC.2014.2306994.png)
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Abstract
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In this paper, we propose the use of Tikhonov regularization in conjunction with node count as a general complexity measure in multiobjective genetic programming. We demonstrate that employing this general complexity yields mean squared test error measures over a range of regression problems, which are typically superior to those from conventional node count (but never statistically worse). We also analyze the reason that our new method outperforms the conventional complexity measure and conclude that it forms a decision mechanism that balances both syntactic and semantic information.
Keywords:
Complexity measure
genetic programming
Pareto dominance
Tikhonov regularization
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