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Uncertainty Estimation in Autoregressive Structured Prediction

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arxiv 2002.07650 v5 pith:UK7ZA7S5 submitted 2020-02-18 stat.ML cs.AIcs.LG

Uncertainty Estimation in Autoregressive Structured Prediction

classification stat.ML cs.AIcs.LG
keywords uncertaintyestimationpredictionsequence-levelstructuredworkautoregressivedetection
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Uncertainty estimation is important for ensuring safety and robustness of AI systems. While most research in the area has focused on un-structured prediction tasks, limited work has investigated general uncertainty estimation approaches for structured prediction. Thus, this work aims to investigate uncertainty estimation for autoregressive structured prediction tasks within a single unified and interpretable probabilistic ensemble-based framework. We consider: uncertainty estimation for sequence data at the token-level and complete sequence-level; interpretations for, and applications of, various measures of uncertainty; and discuss both the theoretical and practical challenges associated with obtaining them. This work also provides baselines for token-level and sequence-level error detection, and sequence-level out-of-domain input detection on the WMT'14 English-French and WMT'17 English-German translation and LibriSpeech speech recognition datasets.

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Cited by 36 Pith papers

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