
Refresh your probability foundations for machine learning by revisiting basics, conditional probability and Bayes' rule, random variables and their distribution functions, and the law of large numbers.
Define omega as the sample space and events as its subsets, with probability as favorable outcomes over total outcomes, and recognize that probabilities lie between 0 and 1.
Explore conditional probability and Bayes' rule through two events A and B, deriving P(A|B)=P(A∩B)/P(B) and P(B|A)=P(A∩B)/P(A), and decompose B by A or not A to illustrate independence where P(A∩B)=P(A)P(B).
Define random variables as functions from outcomes to real numbers, distinguishing discrete and continuous cases. Apply pmf for discrete values and pdf for continuous ones.
Compute the expectation for discrete and continuous random variables using probability mass function and probability density function, and apply linearity of the expectation to variance and constants.
Explore joint probability distributions for multiple random variables, derive marginal density and conditional probabilities, recognize independence, and construct the covariance matrix for the x vector.
explains the law of large numbers by showing the sample mean Xbar converges to mu as n grows; it derives E[Xbar]=mu and Var(Xbar)=sigma^2/n, and presents P(|Xbar−mu|>=epsilon)<=sigma^2/(n epsilon^2).
Explore key probability distribution functions essential to machine learning, including uniform, Bernoulli, and binomial distributions, and apply their mean, variance, and normal distribution formulas.
Concludes the probability for machine learning course by highlighting the covered topics and boosting learner confidence. Encourages learners to leave reviews and ratings to help improve the course.
Probability is usually a prerequisite of machine learning. However, one doesn't need to know all the concepts in probability.
In this course, I have compiled together all the important probability concepts that are most frequently used in machine learning. This is the content I taught at Polytechnique Montreal as a refresher on probability for machine learning. Understanding these concepts will help you navigate through an introductory course in machine learning.
This course is for you if
- You have learned probability a long time ago
- You want to refresh the essential topics in probability to get started with your journey in machine learning.
This course is not for you if
- You want to learn probability from scratch.
- You want to master all the concepts in probability.
Please note that I do not cover all the topics in probability. I only cover the topics that are most frequently used in the machine learning textbook. If you want to learn probability from scratch or master all the concepts, this course is not for you.
In this course, we cover the following topics
Probability basics
Conditional probability and Bayes’ rule
Random variables
Expectation and Variance
Multiple random variables
Law of large numbers
Some important distribution functions