Returns the likelihod of the given prefix under this model,
that is, the sum of the probabilities of all words starting with
the subword of sequence starting at position beginIndex and
ending at position endIndex-1.
Returns the p-value of the subword of the given word starting at
beginIndex and of the appropriate length with a default null model
(typically the uniform model).
Returns the p-value of the subword of the given word starting at beginIndex and ending at endIndex-1
with a default null model (typically the uniform model).
The p-value of a given sequence is defined as the probability under a
null model for a sequence to have a likelihood greater or equal to
the likelihood of the given sequence under this model.