Jul 17, 2020
We create a computationally tractable algorithm for contextual bandit learning with one-dimensional continuous actions with unknown structure on the loss functions. In a nutshell, our algorithm, Continuous Action Tree with Smoothing (CATS), reduces continuous-action contextual bandit learning to cost-sensitive extreme multiclass classification, where each class corresponds to a discretized action. We show that CATS admits an online implementation that has low training and test time complexities per example, and enjoys statistical consistency guarantees under certain realizability assumptions. We also verify the efficiency and efficacy of CATS through large-scale experiments.
The International Conference on Machine Learning (ICML) is the premier gathering of professionals dedicated to the advancement of the branch of artificial intelligence known as machine learning. ICML is globally renowned for presenting and publishing cutting-edge research on all aspects of machine learning used in closely related areas like artificial intelligence, statistics and data science, as well as important application areas such as machine vision, computational biology, speech recognition, and robotics. ICML is one of the fastest growing artificial intelligence conferences in the world. Participants at ICML span a wide range of backgrounds, from academic and industrial researchers, to entrepreneurs and engineers, to graduate students and postdocs.
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