6.1 Local Approximation Methods 6.2 Ordinary Regression as Approximation 6.3 Orthogonal Polynomials 6.4 Least-Squares Orthogonal Polynomial Approximation 6.5 Uniform Approximation 6.6 Interpolation 6.7 Approximation through Interpolation and Regression 6.8 Piecewise Polynomial Interpolation 6.9 Splines 6.10 Examples 6.11 Shape-Preserving Approximation 6.12 Multidimensional Approximation 6.13 Finite Element Approximations 6.14 Neural Networks 6.15 Further Reading and Summary 6.16 … Continue reading 6 Approximation Methods