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Nesterovs Accelerated Gradient and Momentum as approximations to Regularised Update Descent

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 Added by David Barber
 Publication date 2016
and research's language is English




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We present a unifying framework for adapting the update direction in gradient-based iterative optimization methods. As natural special cases we re-derive classical momentum and Nesterovs accelerated gradient method, lending a new intuitive interpretation to the latter algorithm. We show that a new algorithm, which we term Regularised Gradient Descent, can converge more quickly than either Nesterovs algorithm or the classical momentum algorithm.



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