A simple polynomial-time rescaling algorithm for solving linear programs

  • Authors:
  • John Dunagan;Santosh Vempala

  • Affiliations:
  • Microsoft Research, Redmond, WA;Massachusetts Institute of Technology, Cambridge, MA

  • Venue:
  • STOC '04 Proceedings of the thirty-sixth annual ACM symposium on Theory of computing
  • Year:
  • 2004

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Abstract

The perceptron algorithm, developed mainly in the machine learning literature, is a simple greedy method for finding a feasible solution to a linear program (alternatively, for learning a threshold function. ). In spite of its exponential worst-case complexity, it is often quite useful, in part due to its noise-tolerance and also its overall simplicity. In this paper, we show that a randomized version of the perceptron algorithm with periodic rescaling runs in polynomial-time. The resulting algorithm for linear programming has an elementary description and analysis.