Faculty Candidate Seminar

Event Details
  • Date/Time:
    • Tuesday February 26, 2013
      10:00 am - 11:00 am
  • Location: ISyE Executive Classroom
  • Phone:
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  • Fee(s):
    N/A
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Contact

Nagi Gebraeel

nagi@isye.gatech.edu

Summaries

Summary Sentence: Faculty Candidate Seminar

Full Summary: No summary paragraph submitted.

TITLE: Joint Optimization of Sampling and Control for Failing Systems Under Partial Observations

SPEAKER: Michael J. Kim

ABSTRACT:

Stochastic control problems that arise in condition-based maintenance typically assume that information used for decision-making is obtained according to a pre-determined sampling schedule. In many real applications however, there is a high sampling cost associated with collecting such data. It is therefore of equal importance to determine when information should be collected as it is to decide how this information should be utilized for maintenance decision-making. This type of joint optimization has been a long-standing problem in the operations research and maintenance optimization literature, and very few results regarding the structure of the optimal sampling and maintenance policy have been published. In this talk, we formulate and analyze the joint optimization of sampling and maintenance decision-making in the partially observable Markov decision process (POMDP) framework. We prove the optimality of a policy that is characterized by three critical thresholds, which have practical interpretation and give new insight into the value of condition-based maintenance programs in life-cycle asset management.

SHORT BIO:   Michael Kim is currently an NSERC Postdoctoral Fellow at the University of California, Berkeley in the Department of Industrial Engineering and Operations Research. He is also a visiting Senior Fellow in the Department of Decision Sciences at the National University of Singapore Business School. He received his B.A.Sc. in industrial engineering, M.Sc. in mathematics, and Ph.D. in industrial engineering, from the University of Toronto. His research interests are in stochastic operations research and applied statistics with applications in manufacturing, healthcare decision making, and business analytics. For his recent contributions to these areas, Mike was awarded the first place prize in the 2012 Canadian Operational Research Society (CORS) paper competition, and was the sole Canadian recipient of the 2012 Dimitris N. Chorafas Foundation Award. He has also conducted research collaborations with the Ministry of Transportation of Ontario, and Syncrude, one of the world’s largest producers of synthetics crude oil.

Additional Information

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H. Milton Stewart School of Industrial and Systems Engineering (ISYE)

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Status
  • Created By: Anita Race
  • Workflow Status: Published
  • Created On: Feb 22, 2013 - 4:30am
  • Last Updated: Oct 7, 2016 - 10:02pm