Model agnostic interpretability for multiple instance learning

Early, Joseph, Evers, Christine and Ramchurn, Sarvapali (2022) Model agnostic interpretability for multiple instance learning. International Conference on Learning Representations 2022. 25 - 29 Apr 2022. 25 pp .

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Abstract

In Multiple Instance Learning (MIL), models are trained using bags of instances, where only a single label is provided for each bag. A bag label is often only determined by a handful of key instances within a bag, making it difficult to interpret what information a classifier is using to make decisions. In this work, we establish the key requirements for interpreting MIL models. We then go on to develop several model-agnostic approaches that meet these requirements. Our methods are compared against existing inherently interpretable MIL models on several datasets, and achieve an increase in interpretability accuracy of up to 30%. We also examine the ability of the methods to identify interactions between instances and scale to larger datasets, improving their applicability to real-world problems.

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2201.11701v2 - Author's Original

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e-pub ahead of print date: 27 January 2022

Published date: 27 January 2022

Additional Information: 25 pages (9 content, 2 acknowledgement + references, 14 appendix). 16 figures (3 main content, 13 appendix). Submitted and accepted to ICLR 22, see http://openreview.net/forum?id=KSSfF5lMIAg . Revision: added additional acknowledgements ACKNOWLEDGEMENTS This work was funded by AXA Research Fund and the UKRI Trustworthy Autonomous Systems Hub (EP/V00784X/1). We would also like to thank the University of Southampton and the Alan Turing Institute for their support. The authors acknowledge the use of the IRIDIS High Performance Computing Facility and associated support services at the University of Southampton in the completion of this work. IRIDIS-5 GPU-enabled compute nodes were used for the long running experiments in this work. We also acknowledge the use of SciencePlots (Garrett, 2021) for formatting our Matplotlib figures

Venue - Dates: International Conference on Learning Representations 2022, 2022-04-25 - 2022-04-29

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