In the past 5 years, Dr. Shi-Chung Chang has continued to conduct research in three directions: Network Management and Control, Production System Design, Scheduling and Control and Parallel Computing for Large-Scale, Distributed Decision-Making. Results are summarized as follows.
I. Production System Design, Scheduling and Control
I.1 Research on Engineering Service Collaboration System Design
-Is investigating the engineering chain collaboration among design, manufacturing and testing for subwavelength ULSI rapid yiel ramp.
I.2 Research on Optimization Theory with Applications to Production Scheduling and Control
-Is investigating mean and variannce-based priority control and planning for semiconductor manufacturing by using queueing network approximations.
-Combined ordinal optimization-based simulation and a design of experiment method into a methodology for efficiently selecting a good enough solution from combinatorial options and is conducting further study.
-Designed an auction-based scheduling algorithms for job order assignment.
-Combined Lagrange relaxation and minimum cost network flow algorithms into new and optimization-based scheduling algorithms for flow shops with setup effects.
-Developed production scheduling systems based on the algorithms developed for real applications to semiconductor manufacturing factories.
I.3 Design and Implementation of Decision Support Systems for Semiconductor Manufacturing:
-Developed with TSMC a learning software agent for supervisors of semiconductor tool dispatching.
-Designed a queueing analysis and fixed-point iteration-based algorithm for daily production resource allocation.
II. Parallel Computing for Large-Scale, Distributed Decision-Making
Realization of a Lagrange relaxation neural network-based scheduling algorithm into a parallel VLSI implementation (745mW, 3.3V, 100MHz, and 4mmx4mm in chip size)
III. Network Management and Control
III.1 Research on P2P Content Sharing Networks and Services
-Is designing a P2P mobile video surveillance network architecture.
-Is designing digital right management, collusion prevention and incentive schemes for encouraging content sharing.