A stochastic lot-sizing problem taken from the following paper:
  Progressive Hedging as a Meta-Heuristic Applied to Stochastic Lot-Sizing.
  Kjetil K. Haugen, Arne Lokketangen, and David L. Woodruff. 
  European Journal of Operational Research 132(2001) 116--122.

Directory "models": The core deterministic model for lot-sizing with backlogs.

Directory "testinstance": A trivial 2-stage stochastic lot-sizing instance.



