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Vose: Sample random values from a discrete probability distribution.

vose 최신버젼 다운로드

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# Vose: Sample random values from a discrete probability distribution.

Vose is a Ruby implementation of the Vose Alias Method. It allows for 
sampling of random values from a discrete probability distribution. 
In simpler terms, this gem simulates a loaded die. This implementation
runs in O(1) time after after a O(n) initialization.

For more information on the theory, have a look at [Darts, Dice, and Coins: Sampling from a Discrete Distribution](http://www.keithschwarz.com/darts-dice-coins/)

## Installation

To track the latest officially released gem:

gem 'vose' # for the latest officially released gem

*OR* To track the git repo

gem 'vose', :git => "git://github.com/thunderboltlabs/vose.git"

And then execute:

$ bundle

Or install it yourself as:

$ gem install vose

## Usage

probabilities = [0.4, 0.1, 0.2, 0.3]
    vose = Vose::AliasMethod.new probabilities
    choice = vose.next # => an int

The choice will be an index of the probabilities array.

## Contributing

1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Added some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request

vose

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