| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for calculation and an information recording medium, with which a numerical value in a multi-dimensional unbounded area is integrated. SOLUTION: When numerically integrating a function A in the unbounded area, vector mapping (f) transforms m-dimensional (m>=1) vector to m- dimensional vector, a multi-dimensional density functionρof a critical distribution, which is provided as a result of repeatedly applying the mapping (f) to a prescribed m-dimensional vector (u), is analytically provided, a first storage part 111 stores an m-dimensional vector (x), a second storage part 112 stores a scalar value (w), a first calculating part 121 calculates a vector x' =f(x), a second calculating part 122 calculates a scalar value w'=A(x)/ρ(x), an updating part 131 stores x' in the first storage part 111, adds w' to a value stored in the second storage part 112 and updates these values, and when the number of times of updating in the updating part 131 becomes x (c>=1), an output part 141 calculates and outputs a scalar value s=w/(c+1).
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