A Streaming Parallel Decision Tree Algorithm

  • Authors:
  • Yael Ben-Haim;Elad Tom-Tov

  • Affiliations:
  • -;-

  • Venue:
  • The Journal of Machine Learning Research
  • Year:
  • 2010

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Abstract

We propose a new algorithm for building decision tree classifiers. The algorithm is executed in a distributed environment and is especially designed for classifying large data sets and streaming data. It is empirically shown to be as accurate as a standard decision tree classifier, while being scalable for processing of streaming data on multiple processors. These findings are supported by a rigorous analysis of the algorithm's accuracy. The essence of the algorithm is to quickly construct histograms at the processors, which compress the data to a fixed amount of memory. A master processor uses this information to find near-optimal split points to terminal tree nodes. Our analysis shows that guarantees on the local accuracy of split points imply guarantees on the overall tree accuracy.