Perception Visualization: Seeing Through the Eyes of a DNN

• URL: http://arxiv.org/abs/2204.09920v1
• Date: Thu, 21 Apr 2022 07:18:55 GMT
• Title: Perception Visualization: Seeing Through the Eyes of a DNN
• Authors: Loris Giulivi, Mark James Carman, Giacomo Boracchi
• Abstract summary: We develop a new form of explanation that is radically different in nature from current explanation methods, such as Grad-CAM. Perception visualization provides a visual representation of what the DNN perceives in the input image by depicting what visual patterns the latent representation corresponds to. Results of our user study demonstrate that humans can better understand and predict the system's decisions when perception visualizations are available.
• Score: 5.9557391359320375
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Artificial intelligence (AI) systems power the world we live in. Deep neural networks (DNNs) are able to solve tasks in an ever-expanding landscape of scenarios, but our eagerness to apply these powerful models leads us to focus on their performance and deprioritises our ability to understand them. Current research in the field of explainable AI tries to bridge this gap by developing various perturbation or gradient-based explanation techniques. For images, these techniques fail to fully capture and convey the semantic information needed to elucidate why the model makes the predictions it does. In this work, we develop a new form of explanation that is radically different in nature from current explanation methods, such as Grad-CAM. Perception visualization provides a visual representation of what the DNN perceives in the input image by depicting what visual patterns the latent representation corresponds to. Visualizations are obtained through a reconstruction model that inverts the encoded features, such that the parameters and predictions of the original models are not modified. Results of our user study demonstrate that humans can better understand and predict the system's decisions when perception visualizations are available, thus easing the debugging and deployment of deep models as trusted systems.

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