// AI Glossary A–Z

Every AI term, defined.

A living dictionary of 109 AI concepts — from foundational terms to cutting-edge techniques. Search or browse alphabetically.

All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
CONCEPT
Hallucination
Hallucination is when an AI model generates confident, fluent, plausible-sounding content that is factually wrong…
CONCEPT
Heuristic
A heuristic is a practical rule of thumb that finds a good-enough solution quickly rather…
CONCEPT
Hidden Layer
A hidden layer is any layer in a neural network between the input (where data…
CONCEPT
Hugging Face
Hugging Face is the leading open-source AI platform — a hub where researchers and developers…
CONCEPT
Human in the Loop
Human in the Loop (HITL) is an AI design approach where a human remains involved…
CONCEPT
Hyperparameter
A hyperparameter is a configuration setting fixed before training begins — not learned from data.…
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