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Mamba Goes HoME: Hierarchical Soft Mixture-of-Experts for 3D Medical Image Segmentation.
In: (39th Conference on Neural Information Processing Systems, NeurIPS 2025, 02-07 December 2025, San Diego). 2025. 108526-108564 (Advances in Neural Information Processing Systems ; 38)
In recent years, artificial intelligence has significantly advanced medical image segmentation. Nonetheless, challenges remain, including efficient 3D medical image processing across diverse modalities and handling data variability. In this work, we introduce Hierarchical Soft Mixture-of-Experts (HoME), a two-level token-routing layer for efficient long-context modeling, specifically designed for 3D medical image segmentation. Built on the Mamba Selective State-Space Model (SSM) backbone, HoME enhances sequential modeling through adaptive expert routing. In the first level, a Soft Mixture-of-Experts (SMoE) layer partitions input sequences into local groups, routing tokens to specialized per-group experts for localized feature extraction. The second level aggregates these outputs through a global SMoE layer, enabling cross-group information fusion and global context refinement. This hierarchical design, combining local expert routing with global expert refinement, enhances generalizability and segmentation performance, surpassing state-of-the-art results across datasets from the three most widely used 3D medical imaging modalities and varying data qualities. The code is publicly available at github.com/gmum/MambaHoME.
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Publication type
Article: Conference contribution
ISSN (print) / ISBN
1049-5258
Conference Title
39th Conference on Neural Information Processing Systems, NeurIPS 2025
Conference Date
02-07 December 2025
Conference Location
San Diego
Quellenangaben
Volume: 38,
Pages: 108526-108564
Institute(s)
Institute of AI for Health (AIH)