Deterministic parallel global parameter estimation for a model of the budding yeast cell cycle

Authors:
Thomas D. Panning;Layne T. Watson;Nicholas A. Allen;Katherine C. Chen;Clifford A. Shaffer;John J. Tyson
Affiliations:
Departments of Computer Science and Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061;Departments of Computer Science and Mathematics, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061;Departments of Computer Science and Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061;Departments of Computer Science and Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061;Departments of Computer Science and Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061;Departments of Computer Science and Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, USA 24061
Venue:
Journal of Global Optimization
Year:
2008

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Abstract

Two parallel deterministic direct search algorithms are combined to find improved parameters for a system of differential equations designed to simulate the cell cycle of budding yeast. Comparing the model simulation results to experimental data is difficult because most of the experimental data is qualitative rather than quantitative. An algorithm to convert simulation results to mutant phenotypes is presented. Vectors of the 143 parameters defining the differential equation model are rated by a discontinuous objective function. Parallel results on a 2200 processor supercomputer are presented for a global optimization algorithm, DIRECT, a local optimization algorithm, MADS, and a hybrid of the two.