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Rajit Rajpal

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#computer vision Preprint Sep 2026

Waypoint-1.5: A Real-Time Video World Model for Consumer Hardware

The data pipeline, architecture, training methodology, and runtime system behind Waypoint 1.5, a real-time diffusion world model for interactive video generation on consumer-grade hardware, are described and the safety and ethics considerations unique to iWMs are discussed.

Rajit Rajpal, Shahbuland Matiana, Liew Wei Pyn et al. · 0 citations
#machine learning Preprint Sep 2026

Low-Rank Friction for Memory-Efficient Transformer Pretraining

iKFAD is a recently proposed optimiser that replaces adaptive learning rates with adaptive friction in the momentum dynamics, yet performs as well as Adam. Its limitation is that the full friction tensor $\xi\in\mathbb{R}^{m\times n}$ carries the same $\mathcal{O}(mn)$ memory overhead per layer as Adam's second-moment...

Rajit Rajpal, B. Leimkuhler · 0 citations

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