Data driven dorm distribution for student harmony

AS THE NEW SEMESTER approaches, Nanjing University has been allocating dormitory rooms to freshmen based on online survey results of their living habits, such as their sleeping schedule, so as to match each fresh student with some suitable roommates. Beijing Youth Daily comments:

For college students who have to share a room with others on a totally different schedule life can be hell. If one student sleeps and gets up early while his or her roommate sleeps and gets up late, both will feel tormented.

Problems caused by this have emerged so often in the past that many college students complain about dormitory life. Sometimes the differences even lead to violence.