Abstract
Finding new valuable sampling points and making these points better distributed in the design space is the key to determining the approximate effect of Kriging. To this end, a high-precision Kriging modeling method based on hybrid sampling criteria (HKM-HS) is proposed to solve this problem. In the HKM-HS method, two infilling sampling strategies based on MSE (Mean Square Error) are optimized to obtain new candidate points. By maximizing MSE (MMSE) of Kriging model, it can generate the first candidate point that is likely to appear in a sparse area. To avoid the ill-conditioned correlation matrix caused by the too close distance between any two sampling points, the MC (MSE and Correlation function) criterion formed by combining the MSE and the correlation function through multiplication and division is minimized to generate the second candidate point. Furthermore, a new screening method is used to select the final expensive evaluation point from the two candidate points. Finally, the test results of sixteen benchmark functions and a house heating case show that the HKM-HS method can effectively enhance the modeling accuracy and stability of Kriging in contrast with other approximate modeling methods.
Highlights
College of Science, Huazhong Agricultural University, Wuhan 430070, China; School of Mechanical and Electrical Engineering, Xuchang University, Xuchang 461000, China
The test results of sixteen benchmark functions and a house heating case show that the HKM-HS method can effectively enhance the modeling accuracy and stability of Kriging in contrast with other approximate modeling methods
Adding multiple points at the same time does not guarantee that each point is promising and may fail to improve the accuracy. To overcome this bottleneck problem, a high-precision Kriging modeling method based on hybrid sampling criteria (HKM-HS) is proposed
Summary
College of Science, Huazhong Agricultural University, Wuhan 430070, China; School of Mechanical and Electrical Engineering, Xuchang University, Xuchang 461000, China. Finding new valuable sampling points and making these points better distributed in the design space is the key to determining the approximate effect of Kriging. Kriging modeling method based on hybrid sampling criteria (HKM-HS) is proposed to solve this problem. In the HKM-HS method, two infilling sampling strategies based on MSE By maximizing MSE (MMSE) of Kriging model, it can generate the first candidate point that is likely to appear in a sparse area. A new screening method is used to select the final expensive evaluation point from the two candidate points. The test results of sixteen benchmark functions and a house heating case show that the HKM-HS method can effectively enhance the modeling accuracy and stability of Kriging in contrast with other approximate modeling methods
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