kullback_leibler(x, y = NULL)
NULL.Returns a matrix of the Kullback Leibler measure between each vector of probabilities.
A proximity measure between two probability distributions applied to speech.
Uses Kullback & Leibler's (1951) formula:
D_{KL}(P||Q)=\sum_i{ln\left ( \frac{P_{i}}{Q_{i}} \right )}P_{i}
The kullback_leibler function generally receives the output of
either wfm or wfdf functions.
Kullback, S., & Leibler, R.A. (1951). On Information and sufficiency. Annals of Mathematical Statistics 22 (1): 79-86. doi:10.1214/aoms/1177729694
## <strong>Not run</strong>: # p.df <- wfdf(DATA$state, DATA$person) # p.mat <- wfm(text.var = DATA$state, grouping.var = DATA$person) # kullback_leibler(p.mat) # (x <- kullback_leibler(p.df)) # print(x, digits = 5) # kullback_leibler(p.df$greg, p.df$sam) # # ## p.df2 <- wfdf(raj$dialogue, raj$person) # ## x <- kullback_leibler(p.df2) # ## <strong>End(Not run)</strong>