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bbricks (version 0.1.4)

marginalLikelihood_bySufficientStatistics.LinearGaussianGaussian: Marginal likelihood of a "LinearGaussianGaussian" object, using sufficient statistics

Description

Generate the marginal likelihood of the following model structure: $$x \sim Gaussian(A z + b, Sigma)$$ $$z \sim Gaussian(m,S)$$ Where Sigma is known. A is a \(dimx x dimz\) matrix, x is a \(dimx x 1\) random vector, z is a \(dimz x 1\) random vector, b is a \(dimm x 1\) vector. Gaussian() is the Gaussian distribution. See ?dGaussian for the definition of Gaussian distribution. The model structure and prior parameters are stored in a "LinearGaussianGaussian" object. Marginal likelihood = p(x|m,S,Sigma)

Usage

# S3 method for LinearGaussianGaussian
marginalLikelihood_bySufficientStatistics(obj, ss, LOG = TRUE, ...)

Arguments

obj

A "LinearGaussianGaussian" object.

ss

Sufficient statistics of x. In Gaussian-Gaussian case the sufficient statistic of sample x is a object of type "ssGaussianMean", it can be generated by the function sufficientStatistics().

LOG

Return the log density if set to "TRUE".

...

Additional arguments to be passed to other inherited types.

Value

numeric, the marginal likelihood.

See Also

LinearGaussianGaussian, marginalLikelihood.LinearGaussianGaussian