Let's see how we computed that chrF value for HYP1 (we'll leave the computation of the chrF value for HYP2 as an exercise for the reader). First, chrF ignores spaces, so we'll remove them from both the reference and hypothesis: REF: witnessforthepast, (18 unigrams, 17 bigrams) HYP1: witnessofthepast, (17 unigrams, 16 bigrams)