# Weight normalization

A list of weight variables can be specified using the `weights-to-normalize`

and `weights-not-normalized`

entries.
A product these variables will be used as weight, with its name chosen according to the following rule:
if only one variable is specified, its name will be used as the name of the weight variable;
otherwise, `weight-var-name`

needs to be specified to give name to the product variable.

The product is done in the following way:

- The variables specified in
`weights-to-normalize`

are multiplied and the resulting combined weight is normalized to the total number of entries. - The variables in
`weights-not-normalized`

are then multiplied to the previously normalized weight variable, and the result is the final weight.