A user reports a bug in rank.pl. This seems to occur when dealing with smaller files, for example...
marimba(49): more x first<>bigram<>1 4.000 1 1 second<>bigram<>2 3.000 2 2 extra<>bigram1<>3 2.000 3 3 third<>bigram<>4 1.000 4 4 marimba(50): more y second<>bigram<>1 4.000 2 2 extra<>bigram2<>2 3.000 4 4 first<>bigram<>3 2.000 1 1 third<>bigram<>4 1.000 3 3 New version (0.03) marimba(51): rank.pl x y Illegal division by zero at /usr/local/bin/rank.pl line 397. Old version (0.01) marimba(52): perl ./rank.pl x y Rank correlation coefficient = 0.5000 There are also cases there rank.pl will report, falsely, that there are no ngrams in common between the input files. Again, this seems to occur with smaller files. We are checking into this, and if you've observed anything similar please do let us know! Cordially, Ted
