Chatterjee’s Xi Coefficient
Detect nonlinear relationships that Pearson and Spearman miss.
Recent Posts
Newton-Gregory Interpolation
Interpolate equally-spaced data efficiently and discover its connection to Taylor series.
BKM
Compute logarithms and exponentials without a floating point unit.
CORDIC
Compute sine, cosine, and exponentials using only addition, subtraction, and bit shifts.
The AAA Algorithm
Fit rational functions to data with poles and discontinuities where polynomials fail.
Tanhsinh Quadrature
Tackle tricky integrals with endpoint singularities using a clever variable transformation.
Lagrange Interpolation
Approximate functions using polynomial interpolation without solving linear systems.
Lagrange Duality
Derive and interpret the dual form of an optimization problem.
Plotting Ellipses
Plot ellipses using conic, quadratic, and parametric representations.
Numpy Regression Trees
Implement a regression tree from scratch using only numpy.