Computer Science > Machine Learning
[Submitted on 11 Feb 2023 (v1), last revised 9 May 2023 (this version, v2)]
Title:Verifying Generalization in Deep Learning
View PDFAbstract:Deep neural networks (DNNs) are the workhorses of deep learning, which constitutes the state of the art in numerous application domains. However, DNN-based decision rules are notoriously prone to poor generalization, i.e., may prove inadequate on inputs not encountered during training. This limitation poses a significant obstacle to employing deep learning for mission-critical tasks, and also in real-world environments that exhibit high variability. We propose a novel, verification-driven methodology for identifying DNN-based decision rules that generalize well to new input domains. Our approach quantifies generalization to an input domain by the extent to which decisions reached by independently trained DNNs are in agreement for inputs in this domain. We show how, by harnessing the power of DNN verification, our approach can be efficiently and effectively realized. We evaluate our verification-based approach on three deep reinforcement learning (DRL) benchmarks, including a system for Internet congestion control. Our results establish the usefulness of our approach. More broadly, our work puts forth a novel objective for formal verification, with the potential for mitigating the risks associated with deploying DNN-based systems in the wild.
Submission history
From: Guy Amir [view email][v1] Sat, 11 Feb 2023 17:08:15 UTC (3,413 KB)
[v2] Tue, 9 May 2023 23:14:22 UTC (3,428 KB)
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