In this paper, Dr. Jonathan Dodge covers a work based on combining fast and slow cognitive processes for planning. Roughly speaking, system 1 corresponds to intuition and system 2 corresponds to state space search. The paper is called System 1.x: Learning to Balance Fast and Slow Planning with Language Models by Saha et al.
Presentation Link: https://psu.mediaspace.kaltura.com/media/Group+Meeting/1_b2ywfvpv