Ontology: The Rulebook That Teaches Computers What Things Are

Fri, 24 Jul 2026 06:50:56 +0900

🤔 What Is It?

ontology

An ontology is an official rulebook that tells a computer what kinds of things exist in a topic, what facts describe each one, and how they all connect to each other — so the computer can actually reason about meaning, not just match words.

🧩 Like writing the master Pokédex rulebook from scratch

Imagine you are building a Pokémon game from zero and must write a master rulebook so the game engine understands its whole world. First the rulebook names the categories that exist — ‘Pokémon’, ‘Type’, and ‘Move’ are real things here. Then it says what facts describe each category — every Pokémon has a name, a weight, and HP. Next it plugs in real individuals — Charizard and Squirtle are actual entries in the Pokémon category. After that it draws connections — Charizard HAS-TYPE Fire, and Fire IS-WEAK-TO Water. Finally it sets hard rules — ’every Pokémon must belong to at least one type.’ Once the game engine reads that rulebook, it can answer questions you never directly programmed in, like ‘which Pokémon lose to a Water attack?’

Ai on Explain It

Ontology: The Rulebook That Teaches Computers What Things Are

🤔 What Is It?

🧩 Like writing the master Pokédex rulebook from scratch