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Learning certifiably optimal rule lists for categorical data

KDD Papers

Learning certifiably optimal rule lists for categorical data

Elaine Angelino (UC Berkeley);Nicholas Larus-Stone (Harvard);Daniel Alabi (Harvard);Margo Seltzer (Harvard University);Cynthia Rudin (Duke)


Abstract

We present the design and implementation of a custom discrete optimization technique for building rule lists over a categorical feature space. Our algorithm provides the optimal solution, with a certificate of optimality. By leveraging algorithmic bounds, efficient data structures, and computational reuse, we achieve several orders of magnitude speedup in time and a massive reduction of memory consumption. We demonstrate that our approach produces optimal rule lists on practical problems in seconds. This framework is a novel alternative to CART and other decision tree methods.


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