This paper describes an extension of the critical ratio procedure that is used to assign priorities to jobs that are waiting to be processed on a set of machines. The extended procedure is compared to the conventional procedure in a flow shop setting using a set of test problems. Several measures of schedule performance that are related to job due dates are considered.
Litteral, Lewis A. and J. Frank Rudisill. 1983. "An Experimental Investigation of a New Priority Index for Jobs with Due Dates." E.C.R.S.B. 83-5. Robins School of Business White Paper Series. University of Richmond, Richmond, Virginia.