We propose a new optimisation method for estimating both the parameters and the structure, i. e. the number of components, of a finite mixture model for density estimation. We employ a hybrid method consisting of an evolutionary algorithm for structure optimisation in conjunction with a gradient-based method for evaluating each candidate model architecture. For structure modification we propose specific, problem dependent evolutionary operators. The introduction of a régularisation term prevents the models from over-fitting the data. Experiments show good generalisation abilities of the optimised structures.
CITATION STYLE
Kreutz, M., Reimetz, A. M., Sendhoff, B., Weihs, C., & Von Seelen, W. (1998). Optimisation of density estimation models with evolutionary algorithms. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 1498 LNCS, pp. 998–1007). Springer Verlag. https://doi.org/10.1007/bfb0056941
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