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Constraint-Based Genetic Algorithms for Machine Requirement of Semiconductor Assembly Industry: A Proposed Framework

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2 Author(s)
Umi Kalsom Yusof ; Sch. of Comput. Sci., Univ. Sains Malaysia, Penang ; Safaai Deris

Having an accurate capacity planning is always an ultimate goal for semiconductor manufacturing. However, as capacity planning is highly affected by the demand forecast uncertainty, there is a necessity to make the gap closer to ensure profitability. The paper defines the problems faced by a semiconductor company in handling capacity planning and balancing the capital investment cost against the risk of losing revenue. Machine allocation in capacity planning is a process to determine mixture of a machine types that satisfy all precedence and resource constraints and minimize the total machines allocation. We adopt constraint-based genetic algorithm (GA) to solve this optimization problem with the focus on mapping the right chromosome representation to the domain problem. The method is chosen to allow the running of GA in original form as well as to ensure the computation is straight forward and simple.

Published in:

2009 Third Asia International Conference on Modelling & Simulation

Date of Conference:

25-29 May 2009