2 citations · 3 across the 5 of their papers we have counts for
5 papers
Efficient Constrained Graph Search for Post-hoc Error Correction in Binary Classifiers
Qinwu Xu
This study develops a graph search algorithm to find the optimal discrimination path for the binary classification problem. The objective function is defined as the difference of v…
Damped Gauss Newton Search for Multi Metric Hyperparameter Optimization
Qinwu Xu, Yifan Jiang, Zhanyu Ge
We study hyperparameter optimization (HPO) from a numerical-optimization perspective and propose a black-box, target-seeking damped Gauss--Newton method for multiple validation res…
Modeling 3D geometry using 1D laser distance measurements with application to cylinder for visualization and evaluating surface quality
Qinwu Xu
Geometric metrology includes one or two-dimensional (1D or 2D) distance or plane measurements, as well as the three-dimensional (3D) scanning. The 1D or 2D measuring system is unab…
A mathematical and Physical Model Improves Accuracy in Simulating Solid Material Relaxation Modulus and Viscoelastic Responses
Qinwu Xu, Bjorn Engquist
We propose a new material viscoelastic model and mathematical solution to simulate relaxation modulus and viscoelastic response. The model formula of relaxation modulus is extended…
Discontinuous Galerkin method for fractional convection-diffusion equations
Q. Xu, J. S. Hesthaven
We propose a discontinuous Galerkin method for convection-subdiffusion equations with a fractional operator of order defined through the fractional Laplacian. The fracti…