Lisa Notes

Jul 1, 2026 · Artificial Intelligence

How to Convert Text into Numerical Features for NLP: Tokenization, One‑Hot Encoding, and Word Embedding

This article walks through the essential steps of turning raw natural language into machine‑readable numbers, covering categorical vs. numerical features, one‑hot encoding of categorical data, tokenization, building vocabularies, and using word embeddings, illustrated with an IMDB sentiment‑analysis example in Keras.