Before revision:  However,  many models of social interactions do not satisfy this assumption. This paper proposes a substantially weaker model of "approximate neighborhood interference" (ANI) , under which treatments assigned to alters further from the ego have a smaller, but potentially nonzero, impact on the ego's response.
After revision:  However, many models of social interactions . We propose a substantially weaker model of "approximate neighborhood interference" (ANI) , under which treatments assigned to alters further from the ego have a smaller, but potentially nonzero, impact on the ego's response.