Security News
The Dark Side of Open Source
At Node Congress, Socket CEO Feross Aboukhadijeh uncovers the darker aspects of open source, where applications that rely heavily on third-party dependencies can be exploited in supply chain attacks.
@stdlib/stats-base-dists-laplace-cdf
Advanced tools
Readme
Laplace distribution cumulative distribution function.
The cumulative distribution function for a Laplace random variable is
where mu
is the location parameter and b > 0
is the scale parameter.
npm install @stdlib/stats-base-dists-laplace-cdf
var cdf = require( '@stdlib/stats-base-dists-laplace-cdf' );
Evaluates the cumulative distribution function (CDF) for a Laplace distribution with parameters mu
(location parameter) and b > 0
(scale parameter).
var y = cdf( 2.0, 0.0, 1.0 );
// returns ~0.932
y = cdf( 5.0, 10.0, 3.0 );
// returns ~0.094
If provided NaN
as any argument, the function returns NaN
.
var y = cdf( NaN, 0.0, 1.0 );
// returns NaN
y = cdf( 0.0, NaN, 1.0 );
// returns NaN
y = cdf( 0.0, 0.0, NaN );
// returns NaN
If provided b <= 0
, the function returns NaN
.
var y = cdf( 2.0, 0.0, -1.0 );
// returns NaN
y = cdf( 2.0, 0.0, 0.0 );
// returns NaN
Returns a function for evaluating the cumulative distribution function of a Laplace distribution with parameters mu
(location parameter) and b > 0
(scale parameter).
var mycdf = cdf.factory( 3.0, 1.5 );
var y = mycdf( 1.0 );
// returns ~0.132
y = mycdf( 4.0 );
// returns ~0.743
var randu = require( '@stdlib/random-base-randu' );
var cdf = require( '@stdlib/stats-base-dists-laplace-cdf' );
var mu;
var b;
var x;
var y;
var i;
for ( i = 0; i < 100; i++ ) {
x = randu() * 10.0;
mu = randu() * 10.0;
b = randu() * 10.0;
y = cdf( x, mu, b );
console.log( 'x: %d, µ: %d, b: %d, F(x;µ,b): %d', x.toFixed( 4 ), mu.toFixed( 4 ), b.toFixed( 4 ), y.toFixed( 4 ) );
}
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2022. The Stdlib Authors.
FAQs
Laplace distribution cumulative distribution function (CDF).
The npm package @stdlib/stats-base-dists-laplace-cdf receives a total of 9,583 weekly downloads. As such, @stdlib/stats-base-dists-laplace-cdf popularity was classified as popular.
We found that @stdlib/stats-base-dists-laplace-cdf demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
At Node Congress, Socket CEO Feross Aboukhadijeh uncovers the darker aspects of open source, where applications that rely heavily on third-party dependencies can be exploited in supply chain attacks.
Research
Security News
The Socket Research team found this npm package includes code for collecting sensitive developer information, including your operating system username, Git username, and Git email.
Security News
OpenJS is warning of social engineering takeovers targeting open source projects after receiving a credible attempt on the foundation.