Dyadic distribution
A dyadic (or 2-adic) distribution is a specific type of discrete or categorical probability distribution that is of some theoretical importance in data compression.
Definition[]
A dyadic distribution is a probability distribution whose probability mass function is
where n is some positive integer. More generally it is a categorical distribution in which the probability assigned to any label is of the above form
It is possible to find a code defined on this distribution, which has an average code length that is equal to the entropy.[citation needed]
This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (July 2010) |
References[]
- Cover, T.M., Joy A. Thomas, J.A. (2006) Elements of information theory, Wiley. ISBN 0-471-24195-4
Categories:
- Types of probability distributions
- Data compression
- Discrete distributions