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Grounding Counterfactual Explanation of Image Classifiers to Textual Concept Space
Ist Teil von
2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2023, p.10942-10950
Ort / Verlag
IEEE
Erscheinungsjahr
2023
Link zum Volltext
Quelle
IEEE Xplore Digital Library
Beschreibungen/Notizen
Concept-based explanation aims to provide concise and human-understandable explanations of an image classifier. However, existing concept-based explanation methods typically require a significant amount of manually collected concept-annotated images. This is costly and runs the risk of human biases being involved in the explanation. In this paper, we propose Counterfactual explanation with text-driven concepts (CounTEX), where the concepts are defined only from text by leveraging a pretrained multimodal joint embedding space without additional concept-annotated datasets. A conceptual counterfactual explanation is generated with text-driven concepts. To utilize the text-driven concepts defined in the joint embedding space to interpret target classifier outcome, we present a novel projection scheme for mapping the two spaces with a simple yet effective implementation. We show that CounTEX generates faithful explanations that provide a semantic understanding of model decision rationale robust to human bias.