Category:Uncertainty

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This category contains results about Uncertainty.
Definitions specific to this category can be found in Definitions/Uncertainty.

Let $X$ be a discrete random variable.

Let $X$ take a finite number of values with probabilities $p_1, p_2, \dotsc, p_n$.


The uncertainty of $X$ is defined to be:

$\map H X = \ds -\sum_k p_k \lg p_k$

where:

$\lg$ denotes logarithm base $2$
the summation is over those $k$ where $p_k > 0$.

Subcategories

This category has only the following subcategory.

Pages in category "Uncertainty"

The following 2 pages are in this category, out of 2 total.