ProposalFunctionMVIfc (JSLAll 1.0-SNAPSHOT API)

```
public interface ProposalFunctionMVIfc
```
For use with MetropolisHastingsMV. Represents the proposal function for the multivariate case.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double[]`	`generateProposedGivenCurrent(double[] current)`
`double`	`getProposalRatio(double[] current, double[] proposed)`	The ratio of g(y,x)/g(x,y).

- Method Detail
  - getProposalRatio
```
double getProposalRatio(double[] current,
                        double[] proposed)
```
    The ratio of g(y,x)/g(x,y). The ratio of the proposal function evaluated at x = current and y = proposed, where g() is some proposal function of x and y. The implementor should ensure that the returned ratio is a valid double
    
    Parameters:
    
    current - the x to evaluate
    
    proposed - the y to evaluate
    
    Returns:
    
    the ratio of the proposal function
  - generateProposedGivenCurrent
```
double[] generateProposedGivenCurrent(double[] current)
```
    Parameters:
    
    current - the current state value of the chain (i.e. x)
    
    Returns:
    
    the generated possible state (i.e. y) which may or may not be accepted