Markov Chains: A Comprehensive Guide to Stochastic Processes and the Chapman-Kolmogorov Equation

From Theory to Application: Transition Probabilities and Their Impact Across Various Fields

Diogo Ribeiro
Data And Beyond

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Photo by Tomica S. on Unsplash

Abstract:

This document provides an in-depth exploration of Markov Chains, a cornerstone of stochastic process theory, characterized by their capacity to model random systems where the future state depends solely on the present state, not on the sequence of events that preceded it. Central to our discussion is the Chapman-Kolmogorov Equation, a pivotal theorem that facilitates the computation of transition probabilities over multiple steps, thus enriching our understanding of Markov Chains’ temporal dynamics. We begin by introducing the foundational concepts of Markov Chains, including their structure, transition probabilities, and the essential Markov Property. The discourse then advances to the mathematical underpinnings and applications of the Chapman-Kolmogorov Equation, illustrated through practical examples and calculations. Further, the document explores advanced topics such as state classification, Markov Chain Monte Carlo methods, and extensions like Hidden Markov Models and Markov Decision Processes. Through detailed case studies, we demonstrate the profound impact of Markov Chains across…

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