A boosted Physics-Informed Neural Network with a hybrid Swish–ReLU activation reproduces the dynamics of a nonlinear SI1I2R ...

This paper proposes a new multi-echelon 4-D chaotic supply chain model (NME-4D-CSCM) incorporating a sinusoidal nonlinearity to better represent uncertainties in supply chain dynamics. The model ...

Researchers at the University of Tsukuba have created a new method for deriving approximate linear equations to complicated nonlinear problems. Using simulation results, they show that the model ...

Researchers combined an optimized gradient-boosting model, SHAP explainability, and symbolic regression to derive an explicit ...

Questions are grouped into three difficulty bands (Developing, Secure and Greater Depth), so students move from fluency to exam-style problem solving. Each question shows its mark allocation and has ...