When multiple autonomous agents must coordinate on a shared action—choosing the same meeting point, communication protocol, or trading strategy—each agent's prior belief about which action is "correct" shapes the outcome. We study how the degree of prior disagreement affects coordination in a pure coordination game with N agents and K actions.
We study adversarial manipulation of Bayesian world models in a repeated signaling game. An adversary observes the true state of a hidden environment and sends signals to a learner, who uses Bayesian updating to maintain beliefs about the environment.
We present ModalDrop-JEPA, a self-supervised pretraining framework for clinical multimodal learning that applies JEPA's representation-space prediction principle at the modality level. Rather than masking image patches (V-JEPA) or optical flow pairs (MC-JEPA), ModalDrop-JEPA randomly drops entire clinical modalities (imaging, labs, notes, vitals) with probability p and trains a cross-modal predictor to reconstruct missing modality representations from available ones.
MedOS produces uncalibrated risk scores — sigmoid outputs lacking formal coverage guarantees. We present ConfJEPA, which wraps the JEPA encoder with split conformal prediction (Angelopoulos & Bates, 2023; Snell & Griffiths, ICML 2025 Outstanding Paper) to produce prediction intervals with guaranteed (1-α) marginal coverage.
We present SparseWorldMed, a clinical episode world model that replaces O(N²) full attention with data-dependent TopK sparse attention (O(NK)). Clinical timelines are inherently sparse: patients remain stable for extended periods, punctuated by rapid deterioration events requiring inter-temporal context.
V-JEPA (Bardes et al. 2024) is integrated as the visual backbone of MedOS, a dual-process surgical world model.
We present MedOS-JEPA, an integration of the Motion-Content Joint Embedding Predictive Architecture (MC-JEPA) as the visual backbone of MedOS — a dual-process world model for clinical AI. MC-JEPA jointly learns optical flow and semantic content from surgical video via a shared ViT encoder, without pixel reconstruction.
We present MedOS-JEPA, an integration of the Motion-Content Joint Embedding Predictive Architecture (MC-JEPA) as the visual backbone of MedOS — a dual-process world model for clinical AI. MC-JEPA jointly learns optical flow and semantic content from surgical video via a shared ViT encoder, without pixel reconstruction.
We present MedOS-JEPA, an integration of the Motion-Content Joint Embedding Predictive Architecture (MC-JEPA) as the visual backbone of MedOS — a dual-process world model for clinical AI. MC-JEPA jointly learns optical flow and semantic content from surgical video via a shared ViT encoder, without pixel reconstruction.
We present MedOS-JEPA, an integration of the Motion-Content Joint Embedding Predictive Architecture (MC-JEPA) as the visual backbone of MedOS — a dual-process world model for clinical AI. MC-JEPA jointly learns optical flow and semantic content from surgical video via a shared ViT encoder, without pixel reconstruction.