Mar 29, 2018

Statistics and elections (links)


Jan 17, 2018

OCaml and Julia

Implementing the Node type

Aug 28, 2017

Test LaTeX equations via Emacs in Julia mode

∑xᵢ

Also woks in Atom

\Psi tab \^i tab etc

Ψⁱᵦ

Feb 19, 2017

Great statistics course from Harvard University

Statistics 110: Probability


Lectures 24, 25 are about the Gamma distribution. At the beginning of the lec. 25 there is a very good example about modelling waiting times in the bank / post-office.

If you are in the line of 5 people and the waiting time for individual customer is a Poisson process (Exponential distribution) then your's waiting time will be given by Γ(t | λ = 5, rate = 1)


Dec 19, 2016

Data Science

(Not a big insight, but anyway))
Disciplines which are in the heart of Data Science:
  • Statistics and Statistical learning theory
  • Linear Algebra (LA) 
  • Algorithms and data structures
  • Optimization
They form a theoretical background necessary to understand how most of the Machine Learning/Data Mining algorithms work. Why do you need to know how internals work? Because most of the ML algorithms are "leaky abstractions" [1],[2].

The Data Mining is a process of finding the patterns in the data. LA is not only the tool, but it inherently contains elements of pattern recognition. For example the process of matrix factorization reveals patterns in the column / row space of the matrix. 

- [1] "Yes you should understand backprop" by Andrej Karpathy

Nov 22, 2016