text:   Kronecker-factored Natural Gradients",1,"['If you use K-FAC you only need to do 1 update (ACKTR), but if you use first order optimizer, you need to do 320 updates (PPO). AND 1 update by K-FAC still wins. This is what we (with @baaadas) find by comparing ACKTR vs. PPO vs. PPOKFAC. <LINK> <LINK>']",18,01,251