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Scheduling for wafer fabrication of advanced technology nodes entails complicated constraints such as limited waiting times. Focusing on real settings, this paper aims to develop a novel genetic algorithm of multi-subpopulation parameters with hybrid estimation of distribution (MSPHEDA) to solve the present problem effectively and efficiently. To estimate the validity of this approach, ten scenarios...
This paper considers a semiconductor manufacturing scheduling problem (SMSP), subjected to all the practical constraints such as limited waiting time, machine status, different process time on different machines, setup time and arrival time in wafer fabrication facilities (fabs) of semiconductor manufacturing industry. A hybrid estimation of distribution algorithm with multiple subpopulations (HEDA-MS)...
Inventory management is challenging and critical problem in the semiconductor memory manufacturing industry. Rapid technological development and short product life cycle cause a high risk of product obsolescence. However, manufacturers must still hold a reasonable level of inventory to satisfy the needs of customers when demand is uncertain and lead times are long. In this study, the needs and constraints...
This paper presents a min-max regret version programming model for the stochastic flexible job shop scheduling problem (S-FJSP) with the uncertainty of processing time. An effective Markov network based estimation of distribution algorithm (EDA) is proposed to solve S-FJSP to minimize its maximum regret. The proposal employs Markov network modeling machine assignment where the effects between decision...
Every enterprise is pursuing energy conservation and carbon reduction development. Under this trend, light-emitting diodes (LEDs) are becoming the focus of the lighting industry. Because of the different levels or types of chips and substrates, the characteristics of products will be different. LED products are categorized according to characteristics such as luminescence efficiency, wavelength (color),...
Capacity planning in semiconductor manufacturing industry is a challenging task due to its high capital investments, volatile demands, and the long lead time. Current approaches to handle this problem are to model it as an optimization problem where the uncertain demand is either based on a single forecast, or is decomposed via a finite-scenario structure with an assigned probability for each scenario...
Statement of Financial Accounting Standards (SFAS) No.10 has been declared as accounting principle for allowance for reduction of inventory to market in Taiwan since December 31, 2008. It has become more difficult for semiconductor integrated device manufacturers, using make-to-stock manufacturing strategy and possessing inventory accounting for about 14% total costs, to maintain robust records in...
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