timeXplain -- A Framework for Explaining the Predictions of Time Series Classifiers

• URL: http://arxiv.org/abs/2007.07606v2
• Date: Mon, 20 Nov 2023 13:48:09 GMT
• Title: timeXplain -- A Framework for Explaining the Predictions of Time Series Classifiers
• Authors: Felix Mujkanovic, Vanja Dosko\v{c}, Martin Schirneck, Patrick Sch\"afer, Tobias Friedrich
• Abstract summary: We present novel domain mappings for the time domain, frequency domain, and time series statistics. We analyze their explicative power as well as their limits. We employ a novel evaluation metric to experimentally compare timeXplain to several model-specific explanation approaches.
• Score: 3.6433472230928428
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Modern time series classifiers display impressive predictive capabilities, yet their decision-making processes mostly remain black boxes to the user. At the same time, model-agnostic explainers, such as the recently proposed SHAP, promise to make the predictions of machine learning models interpretable, provided there are well-designed domain mappings. We bring both worlds together in our timeXplain framework, extending the reach of explainable artificial intelligence to time series classification and value prediction. We present novel domain mappings for the time domain, frequency domain, and time series statistics and analyze their explicative power as well as their limits. We employ a novel evaluation metric to experimentally compare timeXplain to several model-specific explanation approaches for state-of-the-art time series classifiers.

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