English Dictionary

characteristic function

noun

(mathematical analysis) A function which is equal to 1 for all points in its domain which belong to a given set, and is equal to 0 for all points in the domain which do not belong to that given set.

The characteristic function of a random variable is a mathematical function that describes the probability distribution of that variable.

意味（1）

(mathematical analysis) A function which is equal to 1 for all points in its domain which belong to a given set, and is equal to 0 for all points in the domain which do not belong to that given set.

意味（2）

(mathematics, probability theory) A complex function completely defining the probability distribution of a real-valued random variable