Computer Science > Computer Vision and Pattern Recognition
arXiv:2603.09374 (cs)
[Submitted on 10 Mar 2026]
Title:MIL-PF: Multiple Instance Learning on Precomputed Features for Mammography Classification
View a PDF of the paper titled MIL-PF: Multiple Instance Learning on Precomputed Features for Mammography Classification, by Nikola Jovi\v{s}i\'c and 3 other authors
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Abstract:Modern foundation models provide highly expressive visual representations, yet adapting them to high-resolution medical imaging remains challenging due to limited annotations and weak supervision. Mammography, in particular, is characterized by large images, variable multi-view studies and predominantly breast-level labels, making end-to-end fine-tuning computationally expensive and often impractical. We propose Multiple Instance Learning on Precomputed Features (MIL-PF), a scalable framework that combines frozen foundation encoders with a lightweight MIL head for mammography classification. By precomputing the semantic representations and training only a small task-specific aggregation module (40k parameters), the method enables efficient experimentation and adaptation without retraining large backbones. The architecture explicitly models the global tissue context and the sparse local lesion signals through attention-based aggregation. MIL-PF achieves state-of-the-art classification performance at clinical scale while substantially reducing training complexity. We release the code for full reproducibility.
| Comments: | |
| Subjects: | Computer Vision and Pattern Recognition (cs.CV); Artificial Intelligence (cs.AI) |
| Cite as: | arXiv:2603.09374 [cs.CV] |
| (or arXiv:2603.09374v1 [cs.CV] for this version) | |
| https://doi.org/10.48550/arXiv.2603.09374
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View a PDF of the paper titled MIL-PF: Multiple Instance Learning on Precomputed Features for Mammography Classification, by Nikola Jovi\v{s}i\'c and 3 other authors
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