HieCoAtt-W<cite> (Lu et al., 2016)</cite> 0.246 ± 0.004 HieCoAtt-P<cite> (Lu et al., 2016)</cite> 0.256 ± 0.004 HieCoAtt-Q<cite> (Lu et al., 2016)</cite> 0.264 ± 0.004 Table 2 : Mean rank-correlation coefficients (higher is better); error bars show standard error of means. HieCoAtt-W<cite> (Lu et al., 2016)</cite> 0.062 ± 0.012 HieCoAtt-P<cite> (Lu et al., 2016)</cite> 0.048 ± 0.010 HieCoAtt-Q<cite> (Lu et al., 2016)</cite> 0 Table 3 : Mean rank-correlation coefficients (higher is better) on the reduced set without center bias; error bars show standard error of means.