Java: power distribution

Question

I am trying to create a p2p network according to the distribution of the law of power. How to generate power law distribution in java? Does he have a library?

thank:)

Answer 1

The Apache Commons Math library has an implementation for distributing Zipf , which is a power law.

Answer 2

If you cannot / do not want to use the library:

CDF ( Wikipedia), F: x → P (X < x). y [0,1] , y = F (x). .

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Answer 3

, java- Colt. distributions.

Answer 4

Apache Commons Math lib (, - ...). PowerLaw.java .

Answer 5

This library: https://github.com/pbloem/powerlaws contains a power law generator used as follows:

List<Double> data = new Continuous(3.14, 2.5).generate(1000);

This generates 1000 points from the power law distribution with 3.14 as the minimum value and 2.5 as an exponent. It also has a discrete distribution and a continuous approximation of a discrete distribution. All of these distributions can also match existing data.

(Disclaimer: I wrote this library).