Before revision:  In this paper , we consider the problem with additionalfairness constraints , which takes into account the group membership of data items and limits the  number of items selected from each group to a given number.
After revision:  In this paper , we consider the problem with additionalfairness constraints , which takes into account the group membership of data items and limits the constraint that limits selection to a given number of items selected from each group to a given number.