r=0.6: A=+2 -> 1.2, A=-2 -> -1.6
r=0.8: A=+2 -> 1.6, A=-2 -> -1.6
r=1.0: A=+2 -> 2.0, A=-2 -> -2.0
r=1.2: A=+2 -> 2.4, A=-2 -> -2.4
r=1.4: A=+2 -> 2.4, A=-2 -> -2.8
candidate_ratio=1.80, objective=1.20
KL(old||new)=0.510826 nats
