@stdlib/stats-base-dists-degenerate-logcdf
v0.2.2
Published
Degenerate distribution logarithm of cumulative distribution function (logCDF).
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Logarithm of Cumulative Distribution Function
Degenerate distribution logarithm of cumulative distribution function.
The cumulative distribution function for a degenerate random variable is
where µ
is the constant value of the distribution.
Installation
npm install @stdlib/stats-base-dists-degenerate-logcdf
Usage
var logcdf = require( '@stdlib/stats-base-dists-degenerate-logcdf' );
logcdf( x, mu )
Evaluates the natural logarithm of the CDF of a degenerate distribution centered at mu
.
var y = logcdf( 2.0, 8.0 );
// returns -Infinity
y = logcdf( 8.0, 8.0 );
// returns 0.0
y = logcdf( 10.0, 8.0 );
// returns 0.0
logcdf.factory( mu )
Returns a function for evaluating the natural logarithm of the cumulative distribution function of a degenerate distribution centered at mu
.
var mylogcdf = logcdf.factory( 10.0 );
var y = mylogcdf( 10.0 );
// returns 0.0
y = mylogcdf( 8.0 );
// returns -Infinity
Examples
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var logcdf = require( '@stdlib/stats-base-dists-degenerate-logcdf' );
var mu;
var x;
var y;
var i;
for ( i = 0; i < 100; i++ ) {
x = round( randu()*10.0 );
mu = round( randu()*10.0 );
y = logcdf( x, mu );
console.log( 'x: %d, µ: %d, ln(F(x;µ)): %d', x, mu, y );
}
Notice
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.
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License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.