Формула перплексии:
PP(W)=P(w1,w2,..,wN)−1N=1P(w1,w2,..,wN)−−−−−−−−−−−−−−√N=1∏Ni=1P(wi|w1,..,wi−1)−−−−−−−−−−−−−−−−−−−√NPP(W)=P(w1,w2,..,wN)−1N=1P(w1,w2,..,wN)N=1∏i=1NP(wi|w1,..,wi−1)NPP(W) = P(w_1, w_2, .., w_N)^{-\frac{1}{N}} = \sqrt[N]{\dfrac{1}{P(w_1, w_2, .., w_N)}} = \sqrt[N]{\dfrac{1}{\prod_{i=1}^N P(w_i | w_1, .., w_{i-1})}}
Выберите верные утверждения про перплексию: