Before revision:  Most existing models of interference posit that treatments assigned to alters only affect the ego 's response through a low-dimensional exposure mapping, which only depends on units within some known network radius around the ego.
After revision:  Most existing models of interference posit that treatments assigned to alters beyond a certain network distance from the ego have no effect on the ego 's response through a low-dimensional exposure mapping, which only depends on units within some known network radius around the ego.