Multinomial

Multinomial distribution for categorical data.

Parameters

• events (Union[dict, list]) – defaults to None

  An optional list of events that already occurred.

Attributes

• mode

• n_samples

  The number of observed samples.

Examples

>>> from river import proba

>>> p = proba.Multinomial(['green'] * 3)
>>> p = p.update('red')

>>> p.pmf('red')
0.25

>>> p.update('red').update('red').pmf('green')
0.5

>>> p.revert('red').revert('red').pmf('red')
0.25

Methods

pmf

Probability mass function.

Parameters

• x

revert

Reverts the parameters of the distribution for a given observation.

Parameters

• x

update

Updates the parameters of the distribution given a new observation.

Parameters

• x