Shape-a stochastic hybrid approximation procedure for two-stage stochastic programs

Raymond K.M. Cheung, Warren Buckler Powell

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We consider the problem of approximating the expected recourse function for two-stage stochastic programs. Our problem is motivated by applications that have special structure, such as an underlying network that allows reasonable approximations to the expected recourse function to be developed. In this paper, we show how these approximations can be improved by combining them with sample gradient information from the true recourse function. For the case of strictly convex nonlinear approximations, we prove convergence for this hybrid approximation. The method is attractive for practical reasons because it retains the structure of the approximation.

Original languageEnglish (US)
Pages (from-to)73-79
Number of pages7
JournalOperations Research
Issue number1
StatePublished - 2000

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Management Science and Operations Research


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