18. A method of producing hydrocarbons from a subterranean reservoir, comprising: generating a reservoir development planning system based on input data; optimizing the reservoir development planning system according to an uncertainty space, wherein the reservoir development planning system is optimized using a computer-implemented Markov decision process-based model, wherein the using the computer-implemented Markov decision process-based model includes: defining a plurality of stages, each stage representing a discrete step in time; defining a plurality of states in each stage, each state representing a potential state of the reservoir development plan, and determining a future state by using a probability that the reservoir development transitions from a current state in a current stage to the future state in a subsequent stage, the probability being determined by the current state of the reservoir development and an action to be taken in the current stage that causes the transition to the subsequent stage; and producing hydrocarbons from the reservoir according to output from the optimized reservoir development planning system.
18. A method of producing hydrocarbons from a subterranean reservoir, comprising: generating a reservoir development planning system based on input data; optimizing the reservoir development planning system according to an uncertainty space, wherein the reservoir development planning system is optimized using a computer-implemented Markov decision process-based model, wherein the using the computer-implemented Markov decision process-based model includes: defining a plurality of stages, each stage representing a discrete step in time; defining a plurality of states in each stage, each state representing a potential state of the reservoir development plan, and determining a future state by using a probability that the reservoir development transitions from a current state in a current stage to the future state in a subsequent stage, the probability being determined by the current state of the reservoir development and an action to be taken in the current stage that causes the transition to the subsequent stage; and producing hydrocarbons from the reservoir according to output from the optimized reservoir development planning system. 22. The method of claim 18 , wherein the reservoir development planning system comprises: a Markov decision process-based model comprising a low fidelity reservoir model; and a high fidelity reservoir model, wherein the high fidelity model accepts one or more parameter input data from the Markov decision process-based model and provides one or more reservoir or surface facility property input data to the Markov decision process-based model.