DocXplain: A Novel Model-Agnostic Explainability Method for Document Image Classification

• URL: http://arxiv.org/abs/2407.03830v1
• Date: Thu, 4 Jul 2024 10:59:15 GMT
• Title: DocXplain: A Novel Model-Agnostic Explainability Method for Document Image Classification
• Authors: Saifullah Saifullah, Stefan Agne, Andreas Dengel, Sheraz Ahmed,
• Abstract summary: This paper introduces DocXplain, a novel model-agnostic explainability method specifically designed for generating high interpretability feature attribution maps. We extensively evaluate our proposed approach in the context of document image classification, utilizing 4 different evaluation metrics. To the best of the authors' knowledge, this work presents the first model-agnostic attribution-based explainability method specifically tailored for document images.
• Score: 5.247930659596986
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Deep learning (DL) has revolutionized the field of document image analysis, showcasing superhuman performance across a diverse set of tasks. However, the inherent black-box nature of deep learning models still presents a significant challenge to their safe and robust deployment in industry. Regrettably, while a plethora of research has been dedicated in recent years to the development of DL-powered document analysis systems, research addressing their transparency aspects has been relatively scarce. In this paper, we aim to bridge this research gap by introducing DocXplain, a novel model-agnostic explainability method specifically designed for generating high interpretability feature attribution maps for the task of document image classification. In particular, our approach involves independently segmenting the foreground and background features of the documents into different document elements and then ablating these elements to assign feature importance. We extensively evaluate our proposed approach in the context of document image classification, utilizing 4 different evaluation metrics, 2 widely recognized document benchmark datasets, and 10 state-of-the-art document image classification models. By conducting a thorough quantitative and qualitative analysis against 9 existing state-of-the-art attribution methods, we demonstrate the superiority of our approach in terms of both faithfulness and interpretability. To the best of the authors' knowledge, this work presents the first model-agnostic attribution-based explainability method specifically tailored for document images. We anticipate that our work will significantly contribute to advancing research on transparency, fairness, and robustness of document image classification models.

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