begin{align*}
s_{percent-log} (y,y') &= frac{1}{3} left{ frac{min[log(0+1),log(1+1)]}{max[log(0+1),log(1+1)]} \
& qquad + frac{min[log(5+1),log(4+1)]}{max[log(5+1),log(4+1)]} \
& qquad + frac{min[log(2+1),log(2+1)]}{max[log(2+1),log(2+1)]} right} \
&approx 0.46387 \
d_{percent-log} (y,y') &approx 0.53613
end{align*}