Share Your Ideas with the World ✍️

A community of writers creating and sharing stories, tutorials, and insights.

📰 Recent Articles

Chang-Woo Rhee · Oct 20, 2026

This is a practical build guide for a RAG (Retrieval-Augmented Generation) chatbot. The core idea: use a small encode...

#llm #rag #chatbot #embeddings #retrieval

Chang-Woo Rhee · Oct 09, 2026

Three nested ideas: NLP is the field, the Transformer is the architecture that revolutionized it, and BERT i...

#nlp #machine-learning #transformers #bert #deep-learning

Chang-Woo Rhee · Aug 02, 2026

Real-World Uses of Differentiation and IntegrationWhere calculus actually appears in daily life, engineering, and AI....

#ai #math #calculus #integration #differentiation #real-world #engineering

Chang-Woo Rhee · Aug 02, 2026

Natural Logarithm: ln(x)What ln means, its derivative, and why it's used in AI loss functions. What is ln?ln(x) = na...

#ai #math #calculus #ln #logarithm #limits #cross-entropy

Chang-Woo Rhee · Aug 02, 2026

Euler's Number: e ≈ 2.71828What it is, where it comes from, and why it appears everywhere in AI. What is e?A mathema...

#ai #math #calculus #sigmoid #euler #e #softmax #compound-interest #hwang-law #ai-scaling

Chang-Woo Rhee · Aug 02, 2026

Neural Network Backpropagation — Worked ExamplePart 2: Complete forward pass and backward pass with actual numbers, A...

#python #sigmoid #ai #math #integration #backpropagation #neural network #chain rule #relu

Chang-Woo Rhee

Maxwell

Prashanth

Aditya Sharma

Tony Eden

Tobi Marsh