Off-spring generation: New solutions are obtained by changing the operations sequence (order crossover) and by changing the assignment of machines to the operations (uniform crossover);
Assignments of jobs operations to the machines in the schedules are described by the genes of the chromosomes and the order of operation that appears in the chromosome represents operations sequence.
An operations sequence within a job, called machine sequence, and processing time for an operations are given
An operations sequence on a machine, called job sequence, is unknown.
The Operations Sequence
Manager favorably impresses CIMdata by providing visualization, ordering, and managing of NC operations.
Automatic generation of a shopfloor packet is offered and may contain a tool listing, the seven standard APT cutter parameters, the operations sequence
, a listing of the machining parameters, setup instructions, the cutter path display for each operation, and the estimated machining time by operation.
Technology operations sequences
design for all products manufactured
Choi and Park, (2006) proposed a GA based method for IPPS, that minimise makespan of production order, considering alternative machines and alternative operations sequences
in integrated manufacturing.