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Creators/Authors contains: "Telgarsky, Matus"

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  1. Free, publicly-accessible full text available July 19, 2026
  2. null (Ed.)
    We present and analyze a momentum-based gradient method for training linear classifiers with an exponentially-tailed loss (eg, the exponential or logistic loss), which maximizes the classification margin on separable data at a rate of O (1/t^ 2). This contrasts with a rate of O (1/log (t)) for standard gradient descent, and O (1/t) for normalized gradient descent. The momentum-based method is derived via the convex dual of the maximum-margin problem, and specifically by applying Nesterov acceleration to this dual, which manages to result in a simple and intuitive method in the primal. This dual view can also be used to derive a stochastic variant, which performs adaptive non-uniform sampling via the dual variables. 
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