o rZhQ@s*dZddZddZddZd dd Zd S) z# Tools for comparing ranked lists. c csLt|}t|}|D]}z |||||fVWq ty#Yq wdS)zFinds the difference between the values in ranks1 and ranks2 for keys present in both dicts. If the arguments are not dicts, they are converted from (key, rank) sequences. N)dictKeyError)ranks1ranks2krD/var/www/auris/lib/python3.10/site-packages/nltk/metrics/spearman.py _rank_dists s rcCsdd}d}t||D]\}}|||7}|d7}q zdd||||dWSty1YdSw)aUReturns the Spearman correlation coefficient for two rankings, which should be dicts or sequences of (key, rank). The coefficient ranges from -1.0 (ranks are opposite) to 1.0 (ranks are identical), and is only calculated for keys in both rankings (for meaningful results, remove keys present in only one list before ranking).g)rZeroDivisionError)rrnresrdrrrspearman_correlations   rcCsddt|DS)zGiven a sequence, yields each element with an increasing rank, suitable for use as an argument to ``spearman_correlation``. css|] \}}||fVqdS)Nr).0irrrr 1sz&ranks_from_sequence..) enumerate)seqrrrranks_from_sequence-srV瞯s