Compute Mutual Information

Source: R/collex_MI.R

An internal function called by collex_MI to compute Mutual Information (MI) score

MI_compute(a, a_exp)

Arguments

a

observed frequency co-occurrence of a collocate and the nodeword.
a_exp

expected frequency co-occurrence of the collocate and the nodeword.

Value

A double-numeric value of MI score

Examples

# the numbers below are made-up examples
# for the collocate pattern "tindak pidana" 'legal act'
a <- 702
total_freq_w1 <- 1183
total_freq_w2 <- 1251
corpus_size <- 5763049
a_exp <- (total_freq_w1 * total_freq_w2)/corpus_size
(MI_score <- MI_compute(a, a_exp))
#> [1] 11.41663