Thng th vic thng k sai ch yu vo vic phn cm khng ht gia d liu ca
mt bn v mt tng. V trong th nghim c 5 cnh th c 3 cnh l bn t gn vi
tng.Recall(%) l t l gia s mu thng k ng/ tng s muPrecision (%) l t l
gia s mu thng k ng/ tng s mu c xt thng k (s mu thng k ng, s mu mang
ra thng k nhng nhm t cc mu khc sang nh mt phn d liu ca bn hoc tay
gh c thng k thnh mt i tng trn bn)Hnh th hin kt qu thng k trong 1
cnh:
