To categorize the activities, pXC50 thresholds for activity classes in most projects are less than 6 for "low", over 6 to less than 7 for "middle", over 7 to less than 8 for "high", over 8 for "ultrahigh". To categorize the stages for public projects already transformed into a pseudo time-series, those from the beginning of the compounds to 50%, 25% (accumulated from 50% to 75%), and 25% (accumulated from 75% to 100%) were classified into early, middle and late stage, respectively. As an example, Fig. shows the DRD2 dataset, with compounds classified across the different stages of the drug discovery 'project' mapped onto the pseudo-time axis, as well as the different bioactivity ranges used in this work.