Datasets for Machine Learning Learning Qualitative Structure Activity Relationships (QSARs) Two sets of dataset are given: pyrimidines and triazines. All datasets can be freely distributed as long as appropriate references are given to the papers mentioned. Ross D. King Biomolecular Modelling Laboratory Imperial Cancer Research Fund P.O. Box 123 44 Lincoln's Inn Fields London WC2A 3PX U.K. +44-71-242-0200 x3023 rd_king@icrf.ac.uk