How AI Systems Work
Data, Algorithms, and Models
The three building blocks behind most machine-learning systems.
In this lesson
Lesson goals
- Data represents real examples
- An algorithm defines learning
- A model stores learned patterns
Core idea
The three building blocks behind most machine-learning systems.
1. Data represents real examples: understand it in context, identify inputs and outputs, and define how the result will be verified.
2. An algorithm defines learning: understand it in context, identify inputs and outputs, and define how the result will be verified.
3. A model stores learned patterns: understand it in context, identify inputs and outputs, and define how the result will be verified.
Practical example
Consider a real application of “Data, Algorithms, and Models.” Start small, identify available data, and compare the system with a clear baseline before expanding it.
Check your understanding
- Explain “Data, Algorithms, and Models” in your own words.
- Give one appropriate and one misleading application.
- What risk or limitation should be monitored?

