Paul Riechers

Crossposted from Belief Updates, the Simplex blog, where several of the figures are interactive. By Kyle J. Ray, Paul M. Riechers, and Adam S. Shai (Simplex, Astera Institute). Telescoping cones recovered by linear regression from a transformer’s residual-stream activations. Each component grows and shrinks in accordance with in-context evidence. Introduction...

Thanks to Jasmina Urdshals, Xavier Poncini, and Justis Mills for comments. Introduction At Simplex our mission is to develop a principled science of the representations and emergent behaviors of AI systems. Our initial work showed that transformers linearly represent belief state geometries in their residual streams. We think of that...