$j$. For values on the NSF scale of 1 (best) to 40 (worst), we chose the cost
function $(10 + d_{ij})^2$, in an attempt to provide an incentive to avoid
really bad matched pairs without completely masking the difference between a
$j$. For values on the NSF scale of 1 (best) to 40 (worst), we chose the cost
function $(10 + d_{ij})^2$, in an attempt to provide an incentive to avoid
really bad matched pairs without completely masking the difference between a