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- W4317464970 abstract "Methods based on class activation maps (CAM) provide a simple mechanism to interpret predictions of convolutional neural networks by using linear combinations of feature maps as saliency maps. By contrast, masking-based methods optimize a saliency map directly in the image space or learn it by training another network on additional data. In this work we introduce Opti-CAM, combining ideas from CAM-based and masking-based approaches. Our saliency map is a linear combination of feature maps, where weights are optimized per image such that the logit of the masked image for a given class is maximized. We also fix a fundamental flaw in two of the most common evaluation metrics of attribution methods. On several datasets, Opti-CAM largely outperforms other CAM-based approaches according to the most relevant classification metrics. We provide empirical evidence supporting that localization and classifier interpretability are not necessarily aligned." @default.
- W4317464970 created "2023-01-20" @default.
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- W4317464970 date "2023-01-17" @default.
- W4317464970 modified "2023-09-25" @default.
- W4317464970 title "Opti-CAM: Optimizing saliency maps for interpretability" @default.
- W4317464970 doi "https://doi.org/10.48550/arxiv.2301.07002" @default.
- W4317464970 hasPublicationYear "2023" @default.
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