On the Dual Formulation of Regularized Linear Systems with Convex Risks

  • Authors:
  • Tong Zhang

  • Affiliations:
  • Mathematical Sciences Department, IBM T.J. Watson Research Center, Yorktown Heights, NY 10598 USA. tzhang@watson.ibm.com

  • Venue:
  • Machine Learning
  • Year:
  • 2002

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Abstract

In this paper, we study a general formulation of linear prediction algorithms including a number of known methods as special cases. We describe a convex duality for this class of methods and propose numerical algorithms to solve the derived dual learning problem. We show that the dual formulation is closely related to online learning algorithms. Furthermore, by using this duality, we show that new learning methods can be obtained. Numerical examples will be given to illustrate various aspects of the newly proposed algorithms.