What is EDD rule?
Also, what is the SPT rule?
shortest processing time (SPT) A priority sequencing rule that specifies that the job requiring the shortest processing time is the next job to be processed. The difference between the due date and today's date must be in the same time units as the total shop time remaining.
Similarly, what are the priority rules? Priority rules provide guidelines for the sequence in which jobs should be worked. The rules generally involve the assumption that job setup cost and time is independent of. processing times. In using this rules, job processing times and due dates are important pieces. of information.
Also to know is, what is the average past due in days using the EDD rule?
EDD (Earliest Due Date). EDD sequencing rule is that “jobs are processed according to the due date, earliest due date first.” completed before the due date under EDD rule. The average flow time is 13.98 days and the average lateness is -1.22 days.
How is tardiness calculated in sequencing?
A job's lateness is calculated by subtracting the due date from the operating time. A negative number means the job is finished early, zero is on time, and a positive number results in a late job. The number of late jobs was also determined through the analysis. The lower the number of late jobs, the better.