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 Statistical Learning








Stochastic Chebyshev Gradient Descent for Spectral Optimization

Neural Information Processing Systems

Unfortunately, computing the gradient of a spectral function is generally of cubic complexity, as such gradient descent methods are rather expensive for optimizing objectives involving the spectral function.



Benefits of over-parameterization with EM

Neural Information Processing Systems

Despite the fact that the weights fixed in Model 1, we now pretend that they are not fixed. This gives a second model, which we call Model 2 . Parameter estimation for Model 2 requires EM to estimate the mixing weights in addition to the component means.