For example, for w = 0.5, the precision and recall values of Cluster 16 (Figure 8(b)) translate to F-scores of 0.895 and 0.865 for Doc-Pred and Sent-Pred, respectively, leading to a choice of Doc-Pred.
for w = 0.75, the respective F-scores are 0.897 and 0.914, leading to a choice of Sent-Pred.