Optimizing Locations of Primary Schools in Rural Areas of China

Table 1

The notations of the proposed problem.

Sets
	Set of demand nodes,
	Set of existing and new candidate transfer links in the network,
	Set of existing transfer links in the network,
	Set of unreliable scenarios, indexed by
Parameters
	Demand at node
	Fixed cost of locating a school at node
	Cost of constructing or improving transfer link
	Under uncertain scenario , the travel cost of each student on transfer link
	Desired robustness level,
	Probability that scenario occurs
	The optimal cost of scenario
	Available budget for investing in facilities and transfer links
Decision variables
	Fraction of the client’s demand traveling to
	Fraction of the client’s demand served by the facility
	Shipping out the demand at node using an outbound link is equivalent to constructing that link
	The students at node are served by school at node is equivalent to building a school at