Explanation Shift: Detecting distribution shifts on tabular data via the explanation spaceDownload PDF

05 Oct 2022, 00:12 (modified: 10 Nov 2022, 17:33)NeurIPS 2022 Workshop DistShift PosterReaders: Everyone
Keywords: Model Monitoring, Distribution Shift, Predictive Performance
TL;DR: We find that the modeling of explanation shifts can be a better indicator for the decay of predictive performance than state-of-the-art techniques based on representations of distribution shifts
Abstract: As input data distributions evolve, the predictive performance of machine learning models tends to deteriorate. In the past, predictive performance was considered the key indicator to monitor. However, explanation aspects have come to attention within the last years. In this work, we investigate how model predictive performance and model explanation characteristics are affected under distribution shifts and how these key indicators are related to each other for tabular data. We find that the modeling of explanation shifts can be a better indicator for the detection of predictive performance changes than state-of-the-art techniques based on representations of distribution shifts. We provide a mathematical analysis of different types of distribution shifts as well as synthetic experimental examples.
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