JEPA on Vonnghttps://vonng.com/en/tags/jepa/Recent content in JEPA on VonngHugo -- gohugo.ioenrh@vonng.com (Ruohang Feng)rh@vonng.com (Ruohang Feng)© 2025 Ruohang FengMon, 13 Jul 2026 00:00:00 +0000Getting the Name Right: What Is a World Model?https://vonng.com/en/ai/world-model/Mon, 13 Jul 2026 00:00:00 +0000rh@vonng.com (Ruohang Feng)https://vonng.com/en/ai/world-model/Starting from the roots of “world” and “model,” this essay uses Pearl’s ladder of causation to redefine world models: they must capture not just space and time, but agents, interventions, and counterfactuals.