nltk.ELEProbDist

class nltk.ELEProbDist(freqdist, bins=None)[source]

The expected likelihood estimate for the probability distribution of the experiment used to generate a frequency distribution. The “expected likelihood estimate” approximates the probability of a sample with count c from an experiment with N outcomes and B bins as (c+0.5)/(N+B/2). This is equivalent to adding 0.5 to the count for each bin, and taking the maximum likelihood estimate of the resulting frequency distribution.

Methods

__init__(freqdist[, bins]) Use the expected likelihood estimate to create a probability distribution for the experiment used to generate freqdist.
discount()
freqdist() Return the frequency distribution that this probability distribution is based on.
generate() Return a randomly selected sample from this probability distribution.
logprob(sample) Return the base 2 logarithm of the probability for a given sample.
max()
prob(sample)
samples()
unicode_repr() Return a string representation of this ProbDist.

Attributes

SUM_TO_ONE