4.1 What is Data?

Data is raw information collected from the real world.

Examples:

  • Text

  • Images

  • Videos

  • Numbers

  • Sound

4.2 Why Data is Important?

No data = No AI

One golden line:
“Data is the fuel of Artificial Intelligence.”

4.3 Types of Data

Structured Data

  • Organized in tables

  • Example: Excel sheet

Unstructured Data

  • Images, videos, text

Semi-Structured Data

  • JSON, XML

4.4 Data Quality Matters

Bad data → Bad AI

Important factors:

  • Accuracy

  • Quantity

  • Diversity

  • Cleanliness

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