I would like to find a faster way of computing a similarity distance matrix. My current solution is the following:
time=: 6!:2 9!:3(5) NB. set system for linear display of verbs $ t2 =: 5000 40 $ ?.200000#5 NB. data table of integers, 40 variables, 5000 records find_similarity_distance_matrix =: 13 : '+/@:="1/~ y' time '$ find_similarity_distance_matrix t2' NB. 6.73964 Is there a way to improve it, with special code perhaps? -Tarmo ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm