Data Science

A Markov Chain is a stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event.

A fantastic explanation by Normalized Nerd.

My own python tutorial: what should I wear today?

Ordinary Differential Equations (ODEs) describe the evolution of a system subject to internal and external dynamics. Specifically, an ODE links a quantity depending on a single independent variable (time for example) to its derivatives. In addition, the system can be under the influence of external factors.

                                                  A good implementation can be found here. 

                                                  My own python tutorial: ODE_class.