Lesson 5 of 7

The big picture

4 min

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Four ideas to keep.

Data science, vision and language in four lines
Idea	Remember
The data science loop	Collect and clean the data. Train a model. Improve it with fresh data.
Data that fits the question	A data-driven answer needs data that matches the question.
How a computer sees	A vision system usually tidies the picture first. Then it finds features, and names, locates or follows objects.
How a computer reads	NLP cuts text into words and tidies them. Then it works out grammar and meaning.

Each kind of data has its own steps. Ask what the data is, then ask which step comes next.

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