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bayesm (version 3.0-2)

lndIChisq: Compute Log of Inverted Chi-Squared Density

Description

lndIChisq computes the log of an Inverted Chi-Squared Density.

Usage

lndIChisq(nu, ssq, X)

Arguments

nu

d.f. parameter

ssq

scale parameter

X

ordinate for density evaluation (this must be a matrix)

Value

log density value

Warning

This routine is a utility routine that does not check the input arguments for proper dimensions and type.

Details

\(Z= nu*ssq/\chi^2_{nu}\), \(Z\) \(\sim\) Inverted Chi-Squared. lndIChisq computes the complete log-density, including normalizing constants.

References

For further discussion, see Bayesian Statistics and Marketing by Rossi, Allenby and McCulloch, Chapter 2. http://www.perossi.org/home/bsm-1

See Also

dchisq

Examples

Run this code
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lndIChisq(3,1,matrix(2))

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