I'm a worker from China. I like programming and I have 11 years programming experience(vb,c,Java,excel vba). Now I work in a factory at Foxconn Shenzhen China as a production and supply planner. I have written a lot of small tools for excel using vba that can help us work more efficiently. I'm very interesting in Advanced Planning System which use Genetic Algorithm to search the best planning result. I hope I can write a APS for our factory even a simple one,but I have many question(such as how to model it,how to desgin chromosome). Is there anyone who has the experience of APS can help me??