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Table of Contents
1. Three Levels
2. Computational Level
3. Algorithmic Level
4. Implementational Level
5. Why Levels Matter
6. AI Correspondence
7. PyTorch — Three Levels Illustration
8. History
9. Modern Discussion
10. Common Pitfalls
10.1 Levels Have a Hierarchy
10.2 Implementation Determines All
10.3 Computational = Math
10.4 One Algorithm One Implementation
10.5 Marr Framework Obsolete
11. Related Concepts
References