# InverseGammaOperator restructure

## Changes in the InverseGammaOperator

I did some changes in the InverseGammaOperator in order to have some convenience functions for debugging namely:

- one can simply return (if mathematically existent) the
`mode`

,`mean`

and the`variance`

- one can use the mode and the mean in order to initialize the InverseGammaOperator by setting
`alpha`

and`q`

to`None`

and setting the values for mode and mean. IMHO this can help a lot to find better values for alpha and q since these are sometimes hard to set.

@gedenhof @mtr @parras what do you think about these changes? The code can be found here.