public class NegativeBinomial
extends AbstractIFunction
k -- ( n+j-1 ) n j > ( ) p (1-p) -- ( j ) j=0In a sequence of Bernoulli trials, this is the probability that k or fewer failures precede the n-th success.
The terms are not computed individually; instead the incomplete beta integral is employed, according to the formula
y = negativeBinomial( k, n, p ) = Gamma.incompleteBeta( n, k+1, p ).
All arguments must be positive,
p[0] - scale factor
p[1] - the number of trials.
p[2] - the probability of success (must be in (0.0,1.0)).
Constructor and Description |
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NegativeBinomial() |
NegativeBinomial(java.lang.String title) |
NegativeBinomial(java.lang.String[] variableNames,
java.lang.String[] parameterNames) |
Modifier and Type | Method and Description |
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double |
value(double[] v)
Get value of this function
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JHepSim. A part of HSTOOLS. version-1.2