Cited by 9Explainable Artificial Intelligence (XAI)Visual Attention and Saliency DetectionAdvanced Neural Network Applications

Sanity Checks for Saliency Metrics

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Tomsett, Richard, Harborne, Dan, Chakraborty, Supriyo, Gurram, Prudhvi, Preece, Alun·2020·Proceedings of the AAAI Conference on Artificial Intelligence

Abstract

Saliency maps are a popular approach to creating post-hoc explanations of image classifier outputs. These methods produce estimates of the relevance of each pixel to the classification output score, which can be displayed as a saliency map that highlights important pixels. Despite a proliferation of such methods, little effort has been made to quantify how good these saliency maps are at capturing the true relevance of the pixels to the classifier output (i.e. their “fidelity”). We therefore investigate existing metrics for evaluating the fidelity of saliency methods (i.e. saliency metrics). We find that there is little consistency in the literature in how such metrics are calculated, and show that such inconsistencies can have a significant effect on the measured fidelity. Further, we apply measures of reliability developed in the psychometric testing literature to assess the consistency of saliency metrics when applied to individual saliency maps. Our results show that saliency metrics can be statistically unreliable and inconsistent, indicating that comparative rankings between saliency methods generated using such metrics can be untrustworthy.

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Authors
Tomsett, R., Harborne, D., Chakraborty, S., Gurram, P., & Preece, A.
Affiliations
  • IBM (United States) (US)
  • Booz Allen Hamilton (United States) (US)
  • Cardiff University (GB)
Venue
Proceedings of the AAAI Conference on Artificial Intelligence
Published
2020-04-03
Volume
34
Issue
04
Pages
6021-6029
ISSN
  • 2159-5399 (ISSN-L)
  • 2374-3468
OpenAlex
W2992167130
Cited by
3
References
30
Citations by year
2024: 1 · 2020: 1 · 2019: 1
FWCI
0.10
Type
conference paper
Language
en
Open access
Locations
  • Proceedings of the AAAI Conference on Artificial Intelligence (publishedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (acceptedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Government of the United Kingdom
  • Army Research Laboratory (W911NF‐16‐3‐0001, W911NF)
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Explainable Artificial Intelligence (XAI)
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Neural Network Applications
Keywords
saliency maps, post-hoc explanation, sanity checks

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