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Through sequential construction of posteriors on observing data online, Bayes’ theorem provides a natural framework for continual learning. We develop Variational Auto-Regressive Gaussian Processes (VAR-GPs), a principled posterior updating mechanism to solve sequential tasks in continual learning. By relying on sparse inducing point approximations for scalable posteriors, we propose a novel auto-regressive variational distribution which reveals two fruitful connections to existing results in Bayesian inference, expectation propagation and orthogonal inducing points. Mean predictive entropy estimates show VAR-GPs prevent catastrophic forgetting, which is empirically supported by strong performance on modern continual learning benchmarks against competitive baselines. A thorough ablation study demonstrates the efficacy of our modeling choices.
Author Information
Sanyam Kapoor (New York University)
Theofanis Karaletsos (Facebook)
Thang Bui (University of Sydney)
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2021 Poster: Variational Auto-Regressive Gaussian Processes for Continual Learning »
Thu. Jul 22nd 04:00 -- 06:00 PM Room Virtual
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