Scheduling x Hart et al.(1998 )and Hart ross(1999a) x Proposed an ais to produce robust schedules for a dynamic job-shop scheduling problem in which jobs arrive continually, and the environment is subject to changes 紫 Investigated1san AIs could be evolved using a ga approach then be used to produce sets of schedules which together cover a range of contingencies, predictable and unpredictable x Model included evolution through gene libraries, affinity maturation of the immune response and the clonal selection principleScheduling Hart et al. (1998) and Hart & Ross (1999a) Proposed an AIS to produce robust schedules for a dynamic job-shop scheduling problem in which jobs arrive continually, and the environment is subject to changes. Investigated is an AIS could be evolved using a GA approach then be used to produce sets of schedules which together cover a range of contingencies, predictable and unpredictable. Model included evolution through gene libraries, affinity maturation of the immune response and the clonal selection principle