# Discrete Probability Function Structure

(Redirected from Categorical distribution)

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A Discrete Probability Function Structure is a probability function structure for a discrete random experiment.

**AKA:**Categorical Distribution.**Context:**- It can be produced by Discrete Probability Function Creation Task.
- It can range from being a Binomial Probability Function Structure to being a Multinomial Probability Function Structure.
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**Example(s):****Counter-Example(s):****See:**Gini Diversity Index, Discrete Random Variable.

## References

### 2014

- (Wikipedia, 2014) ⇒ http://en.wikipedia.org/wiki/Multinomial_distribution Retrieved:2014-10-29.
- … Note that, in some fields, such as natural language processing, the categorical and multinomial distributions are conflated, and it is common to speak of a "multinomial distribution" when a categorical distribution is actually meant. This stems from the fact that it is sometimes convenient to express the outcome of a categorical distribution as a "1-of-K" vector (a vector with one element containing a 1 and all other elements containing a 0) rather than as an integer in the range [math]\displaystyle{ 1 \dots K }[/math]; in this form, a categorical distribution is equivalent to a multinomial distribution over a single trial.