US 11,922,165 B2
Parameter vector value proposal apparatus, parameter vector value proposal method, and parameter optimization method
Yasunori Taguchi, Kawasaki (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Sep. 12, 2022, as Appl. No. 17/942,285.
Claims priority of application No. 2021-178991 (JP), filed on Nov. 1, 2021.
Prior Publication US 2023/0138810 A1, May 4, 2023
Int. Cl. G06F 18/213 (2023.01); G06F 9/30 (2018.01); G06F 9/54 (2006.01); G06F 18/21 (2023.01)
CPC G06F 9/30036 (2013.01) [G06F 9/545 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A parameter vector value proposal apparatus, comprising:
a storage device that stores observation data, which is a set of pairs each consisting of a parameter vector value representing a point in a D-dimensional space (D is an integer of 2 or more) and an observation value of an objective function at the point; and
processing circuitry configured to:
determine, as a low-dimensional search space, an R-dimensional affine subspace (R is an integer that is not less than 1 and less than D) that passes through a point represented by a predetermined parameter vector value in the D-dimensional space;
extract, as extracted data, a set of pairs corresponding to one or more points at which similarity to a point included in the low-dimensional search space are equal to or more than a predetermined value, the one or more points being among one or more points in the D-dimensional space represented by one or more parameter vector values included in the observation data stored in the storage device; and
propose a parameter vector value representing a point at which a value of the objective function is to be observed next, based on the extracted data.