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- W2892285692 abstract "Time series classification has received great attention over the past decade with a wide range of methods focusing on predictive performance by exploiting various types of temporal features. Nonetheless, little emphasis has been placed on interpretability and explainability. In this paper, we formulate the novel problem of explainable time series tweaking, where, given a time series and an opaque classifier that provides a particular classification decision for the time series, we want to find the minimum number of changes to be performed to the given time series so that the classifier changes its decision to another class. We show that the problem is NP-hard, and focus on two instantiations of the problem, which we refer to as reversible and irreversible time series tweaking. The classifier under investigation is the random shapelet forest classifier. Moreover, we propose two algorithmic solutions for the two problems along with simple optimizations, as well as a baseline solution using the nearest neighbor classifier. An extensive experimental evaluation on a variety of real datasets demonstrates the usefulness and effectiveness of our problem formulation and solutions." @default.
- W2892285692 created "2018-09-27" @default.
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- W2892285692 date "2018-11-01" @default.
- W2892285692 modified "2023-10-02" @default.
- W2892285692 title "Explainable Time Series Tweaking via Irreversible and Reversible Temporal Transformations" @default.
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- W2892285692 doi "https://doi.org/10.1109/icdm.2018.00036" @default.
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