A Branch and Bound Method to Minimize the Number of Late Jobs on a Single Machine

The paper considers the problem of scheduling n jobs on a single machine to minimize the number of tardy jobs (or late jobs). Each job has a release date, a processing time and a due date. The general case with non-equal release dates and diierent due dates is considered. Using new and eecient lower bounds, a branch and bound scheme is proposed based on the deenition of a master sequence, i.e., a sequence containing at least an optimal sequence. Numerical experiments are presented.