AGE-MIL: Anchor-Guided Evidence Learning for Patient-Level Prediction

• URL: http://arxiv.org/abs/2606.12126v1
• Date: Wed, 10 Jun 2026 14:19:37 GMT
• Title: AGE-MIL: Anchor-Guided Evidence Learning for Patient-Level Prediction
• Abstract summary: We propose Anchor-Guided Evidence MIL (AGE-MIL), a weakly supervised framework for patient-level prediction.<n>AGE-MIL constructs a patient-level anchor from slide representations to capture global pathological context.<n>Results show that the proposed framework consistently outperforms eight state-of-the-art MIL methods.
• Score: 16.050602554609984
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Existing computational pathology methods predominantly operate within whole-slide image (WSI)-level multiple instance learning (MIL) paradigms, while patient-level modeling remains underexplored. In routine pathological practice, however, pathologists derive diagnostic and prognostic conclusions by integrating evidence across multiple WSIs rather than relying on any single slide. This discrepancy creates a fundamental misalignment when patient-level supervision is directly imposed on conventional MIL frameworks, often leading to unstable optimization and degraded predictive reliability. To address this issue, we propose Anchor-Guided Evidence MIL (AGE-MIL), a weakly supervised framework for patient-level prediction. AGE-MIL constructs a patient-level anchor from slide representations to capture global pathological context and guide the retrieval and integration of diagnostically relevant local patches, enabling robust patient-level modeling. Patient-level risk is further modeled as an evidence accumulation process, promoting stable optimization under weak supervision. AGE-MIL is evaluated on six clinically relevant patient-level prediction tasks from two independent cohorts. Experimental results show that the proposed framework consistently outperforms eight state-of-the-art MIL methods. Code is available at https://github.com/wodeniua/AGE-MIL.

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