A Simpler Analysis of the Multi-way Branching Decision Tree Boosting Algorithm

  • Authors:
  • Kohei Hatano

  • Affiliations:
  • -

  • Venue:
  • ALT '01 Proceedings of the 12th International Conference on Algorithmic Learning Theory
  • Year:
  • 2001

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Abstract

We improve the analysis of the decision tree boosting algorithm proposed by Mansour and McAllester. For binary classification problems, the algorithm of Mansour and McAllester constructs a multiway branching decision tree using a set of multi-class hypotheses. Mansour and McAllester proved that it works under certain conditions. We give a much simpler analysis of the algorithm and simplify the conditions. From this simplification, we can provide a simpler algorithm, for which no prior knowledge on the quality of weak hypotheses is necessary.