AdaKAN: A dual-branch adaptive Kolmogorov-Arnold network for medical image segmentation

• URL: http://arxiv.org/abs/2607.22891v1
• Date: Fri, 24 Jul 2026 20:02:50 GMT
• Title: AdaKAN: A dual-branch adaptive Kolmogorov-Arnold network for medical image segmentation
• Abstract summary: We propose AdaKAN, an Adaptive Kolmogorov-Arnold Network (KAN) that integrates convolutional operations with a novel efficient KAN block.<n>AdaKAN achieves state-of-the-art performance in segmentation accuracy.
• Score: 6.124773188525719
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Medical image segmentation is a fundamental task in computer-aided diagnosis, yet it remains challenging due to the complexity of anatomical structures and the variability across imaging modalities. In this paper, we propose AdaKAN, an Adaptive Kolmogorov-Arnold Network (KAN) that synergistically integrates convolutional operations with a novel efficient KAN (EffiKAN) block, comprised of an efficient attention mechanism and an adaptive KAN (AdaptKAN) module. This module features a dual-branch design: one branch employs a KAN layer with Bernstein polynomial activations for globally smooth and stable function approximation, while the other branch performs channel-wise refinement through projection operations and adaptive scaling. AdaKAN adopts a U-shaped architecture that effectively captures both long-range dependencies and fine-grained local features, overcoming the limitations of conventional convolutional and Transformer-based segmentation models. Skip connections are employed to preserve spatial details during encoding and facilitate accurate reconstruction during decoding. Extensive experiments conducted on diverse medical imaging datasets demonstrate that AdaKAN achieves state-of-the-art performance in segmentation accuracy.

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