qr_points.txt 18 points to fit into one paper -------------------------------------------------------------------------------- A) Quasirandom numbers are related to random numbers, but have important differences. B) Random numbers are useful for sampling. B) A simple sampling problem estimates the area of an irregular region. D) The convergence rate for quasirandom sampling involves the product of two factors, which suggest it can only beat pseudorandom sampling for relatively small dimensions (say less than 10). E) Sampling with quasirandom numbers worked better on the CMO problem than other sampling methods. F) Problems involving high dimensional variables become extremely difficult to solve, even with sampling; this difficulty is called the curse of dimensionality. G) Random numbers are unpredictable, uncorrelated, and unbiased. Pseudorandon numbers are predictable, but uncorrelated and unbiased. Quasirandom numbers are predictable and correlated, but unbiased. H) The correct term for random numbers on a computer is pseudorandom. I) The Monte Carlo method has a convergence rate that is independent of the spatial dimension. J) Discrepancy is a measure of uniformity of distribution, that is, of how unbiased a set of number is. K) Quasirandom numbers have higher uniformity than random or pseudorandom numbers, and this means they do a better job of sampling. L) A difficult sampling problem involves estimating the current value of a collateralized mortgage obligation (CMO) over 360 monthly payments. M) The Monte Carlo method is based on sampling; the sampling can be done using pseudorandom or quasirandom numbers, or an orderly grid. N) Quasirandom numbers can be generated by a formula. O) Quasirandom sampling sometimes produces good results despite the curse of dimensionality. P) We can think of sets of numbers as truly random, pseudorandom, quasirandom, or orderly. Q) Quasirandom numbers are more uniformly distributed than pseudorandom numbers. R) The CMO results, for dimension 360, suggest that quasirandom sampling can beat pseudorandom sampling in a high dimension. This may mean that the actual problem being studied has some underlying simple structure that makes this possible.