The CSS3 Gradient Generator is a showcase for the power of CSS gradients. It also provides a simple graphical user interface for working with CSS webkit gradients, allowing a user preview real time what their gradient will look like and provide the code for the gradient they generated.
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J. Werfel, X. Xie, и H. Seung. In, MIT Press, (2003)Discussion of learning curves for stochastic gradient descent.
Besides gradient based approaches, the paper shortly describes (with additional references) weight perturbation and node perturbation approaches..
W. Wang, M. Jafari, S. Sanei, и J. Chambers. Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on, (июля 2003)