“…A simulation-based ADP method uses simulation, e.g., Monte Carlo simulation, to approximate state-action costs. Most previous studies of an ADP application to inventory management focused on learning-based ADP; see, e.g., Van Roy, Bertsekas, Lee, and Tsitsiklis (1997), Giannoccaro and Pontrandolfo (2002), Shervais, Shannon, and Lendaris (2003), Kim, Jun, Baek, Smith, and Kim (2005), Kwon, Kim, Jun, and Lee (2008), Kim, Kwon, and Baek (2008), Chaharsooghi, Heydari, and Zegordi (2008) and Jiang and Sheng (2009). Only Choi, Realff, and Lee (2006) investigated simulationbased ADP.…”