Tommy Khoo

Data Science - Machine Learning - Statistics - Software Development

• PhD in Mathematics - Dartmouth College

• MSc in Mathematics and the Foundations of Computer Science - Oxford University

• BSc in Mathematics and Economics - Singapore Institute of Management, University of London

• Connect with me on LinkedIn

Machine Learning & Data Science

Large Language Models

• Short Tutorial - AI Agent with Python, Gemini, and LangChain

• Five Key Parts of the LLM Training Process

• Practical Issues with LLM and AI Agent Projects

• Attention Is All You Need - The Attention Mechanism in Recurrent Neural Networks

• Healthcare LLM Use Case - Checking CPT and Taxonomy Code Mismatch

Uncategorized

• Multidimensional Scaling Outlier Detection - With a Real-World Example

• Random Forest Doesn’t (Does) Overfit

• Naive Bayes - Mathematical Theory

• When Not To Use Bayesian Probability Estimation

• Analyzing Hepatitis Survival With a Decision Tree

Simple Linear Regression

• Part 1 - Mathematical Theory

• Part 2 - Estimating Yacht Hydrodynamics

• Part 3 - GDP and Life Expectancy

Logistic Regression

• Part 1 - Mathematical Theory

• Part 2 - Predicting Recipe Labels

Mathematics & Statistics

Bias & Variance

• Part 1 - Bias and Variance in Statistics

• Part 2 - Bias and Variance in Machine Learning

Hypothesis Testing

• Hypothesis and A/B Testing - With a Real-World Example

• P-Value Is Not Probability Of Getting the Data Assuming Null Hypothesis Is True

Uncategorized

• The No Free Lunch Theorems For Supervised Learning, Optimization, & Search

• Great Papers in Statistics & Machine Learning

• Simultaneously Prove Every Ball Was Removed Yet Number of Balls Goes to Infinity

The Axiom of Choice

• The Axiom of Choice Explained

• Some Interesting Tidbits