BLP blp_nfp.R estimates demand using the nested fixed point algorithm. blp_nfp_joint.R estimates demand and supply jointly using the nested fixed point algorithm. blp_merger.R conducts a counterfactual merger analysis. blp_mpec.R estimates demand using the mathematical program with equilibrium constraints algorithm. blp_mpec_joint.R estimates demand and supply jointly using the mathematical program with equilibrium constraints algorithm.