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Sparsity-accuracy trade-off in MKL

15 January 2010
Ryota Tomioka
Taiji Suzuki
ArXiv (abs)PDFHTML
Abstract

We empirically investigate the best trade-off between sparse and uniformly-weighted multiple kernel learning (MKL) using the elastic-net regularization on real and simulated datasets. We find that the best trade-off parameter depends not only on the sparsity of the true kernel-weight spectrum but also on the linear dependence among kernels and the number of samples.

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