American options from MARS. Ehrlichman, S. M. T. & Henderson, S. G. In Perrone, L. F., Wieland, F. P., Liu, J., Lawson, B. G., Nicol, D. M., & Fujimoto, R. M., editors, Proceedings of the 2006 Winter Simulation Conference, pages 719–726, Piscataway, New Jersey, 2006. IEEE.
American options from MARS [pdf]Paper  abstract   bibtex   
We develop a class of control variates for the American option pricing problem that are constructed through the use of MARS - multivariate adaptive regression splines. The splines approximate the option's value function at each time step, and the value function approximations are then used to construct a martingale that serves as the control variate. Significant variance reduction is possible even in high dimensions. The primary restriction is that we must be able to compute certain one-step conditional expectations.

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