# egamma Class Reference

Gamma posterior density. More...

`#include <libEF.h>`

Inheritance diagram for egamma:

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Collaboration diagram for egamma:

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List of all members.

## Public Member Functions
| egamma (const RV &rv)
| Default constructor.
void | set_parameters (const vec &a, const vec &b)
| Sets parameters.
vec | sample () const
| Returns a sample, from density .
double | evalpdflog (const vec &val) const
| TODO: is it used anywhere?
double | lognc () const
| logarithm of the normalizing constant,
void | _param (vec *&a, vec *&b)
| Returns poiter to alpha and beta. Potentially dengerous: use with care!
vec | mean () const
| return expected value
virtual void | dupdate (mat &v)
| TODO decide if it is really needed.
virtual double | evalpdflog_nn (const vec &val) const
| Evaluate normalized log-probability.
virtual vec | evalpdflog (const mat &Val) const
| Evaluate normalized log-probability for many samples.
virtual void | pow (double p)
| Power of the density, used e.g. to flatten the density.
virtual mat | sampleN (int N) const
| Returns N samples from density .
virtual double | eval (const vec &val) const
| Compute probability of argument `val`.
virtual vec | evalpdflog_m (const mat &Val) const
| Compute log-probability of multiple values argument `val`.
const RV & | _rv () const
| access function, possibly dangerous!
void | _renewrv (const RV &in_rv)
| modifier function - useful when copying epdfs
## Protected Attributes
vec | alpha
| Vector .
vec | beta
| Vector .
RV | rv
| Identified of the random variable.

## Detailed Description

Gamma posterior density.

Multivariate Gamma density as product of independent univariate densities.

The documentation for this class was generated from the following files:

- work/git/mixpp/bdm/stat/libEF.h
- work/git/mixpp/bdm/stat/libEF.cpp