∫ntegrabℓε ∂iﬀerentiαℓs · unorganised notes, code, and writings of random topics

Jacobian matrix, Hessian matrix, and applications

May 30, 2018 blog math

Engineering math course in the first year of undergraduate would cover vector calculus. Jacobian and Hessian matrices are naturally covered. Jacobian matrix of a vector-valued function \(\mathbf{f}:\mathbb{R}^n\to\mathbb{R}^m\) is [more]

Linear regression and confidence

May 25, 2018 blog math

Linear regression assumes a set of coordinates \((x_i, y_i),\ i=1,\cdots,N\) fits the relation [more]

Knuth (2000) Dancing Link

May 18, 2018 paper code

A paper that is easy to read, summarizing the development of algorithm to set cover problem. The name “dancing link” is how Knuth called his implementation of depth-first-search. Wikipedia has an article about that, named Knuth’s Algorithm X. [more]

Using Intel Intrinsics

May 16, 2018 blog code

Intel intrinsics is available in many compliers (VC++, gcc, clang, icc) to allow SIMD programming using vector instruction sets from MMX to AVX2/3. [more]

Using C++17

May 10, 2018 blog code

Watched on YouTube the video of How to Adopt Modern C++17 into Your C++ Code and below are the notes. [more]