[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_28":-5,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_51":52,"_53":54,"_55":56,"_57":58},"routes/_store+/_readers+/email_author.$slug/route",{"_9":10,"_11":-5},"book",{"_12":13,"_14":15,"_16":17,"_18":19,"_20":21,"_22":23},"currentUser","id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvNzg2ODY","title","Mastering Ontology Engineering with Protégé and Pizza.owl","state","published","contactAuthorMethod","email","aboutText","

This is not a static textbook. It is a living, evolving guide — written in the open and updated continuously alongside a complete video tutorial series.

Protégé Pizza transforms the legendary pizza.owl tutorial into a structured, professional learning experience. It bridges the gap between semantic theory and real-world implementation, taking you step by step from your first class in Protégé to the architecture of executable knowledge systems.

What makes this book different:

Hands-on from the start: Build a working ontology while you learn — no prior experience required.
Theory and practice in sync: Every concept is paired with Protégé workflows, reasoning exercises, and verification steps.
Architectural depth: Learn not just how to model, but why modeling decisions matter for governance, reasoning, and enterprise-scale knowledge graphs.
The SKDL framework: Follow a seven-stage Semantic Knowledge Development Lifecycle that turns conceptual models into executable intelligence.
Living content: Get lifetime updates as the book and video series evolve — no DRM, no hidden fees.

Whether you are an enterprise architect, AI engineer, knowledge graph practitioner, or a curious learner, this book gives you a repeatable methodology for engineering machine-understandable meaning.

The journey begins with pizza. But the real subject is meaning.

Includes free access to the complete open-source GitHub repository: code snapshots, reference models, and a growing community of ontology engineers.

Get the Leanpub edition and support the creation of more open semantic engineering content.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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