Massively parallel computation of large-scale spatial price equilibrium models with discriminatory ad valorem tariffs |
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Authors: | Anna Nagurney Charles F Nicholson Phillip M Bishop Phillip M Bishop |
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Institution: | (1) School of Management, University of Massachusetts, 01003 Amherst, MA, USA;(2) Department of Agricultural, Resource and Managerial Economics, Cornell University, 14853 Ithaca, NY, USA |
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Abstract: | In this paper, we develop a perfectly competitive spatial equilibrium model in price and quantity variables in the presence of discriminatory ad valorem tariffs, a widely used trade policy instrument. We derive the equilibrium conditions and formulate them as a variational inequality problem. An algorithm is then proposed for the computation of the equilibrium pattern and convergence results established. The algorithm resolves the problem into very simple subproblems, each of which can be solved simultaneously and in closed form. Finally, the algorithm is implemented on the massively parallel Thinking Machines CM-2 and CM-5 architectures, known as the Connection Machines, and numerical results presented. |
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Keywords: | Spatial price equilibria discriminatory ad valorem tariffs variational inequalities massively parallel computation |
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