← Three Kinds of Guess, and Their Data

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A shop guesses a price. A photo app makes groups. Are these the same kind of guess?

This track's six ideas, in order.

This is Three Kinds of Guess, and Their Data. It uses what you know of training, rows and columns.

What you will learn

Guess a number. Learn from past numbers. Guess a new one.
Group with no labels. Make groups when nobody gave answers.
Three kinds of guess. Sort a job by what comes out.
What a dataset holds. Records, attributes and kinds of data.
Structured or unstructured data. Tables, piles and both together.
Train, check, test. Why one pile of data is split in three.

Need a quick recap?

Training — labelled examples teach a program a rule.
Three ways to learn — with labels, without labels, and by rewards.
Rows and columns — one row per thing, one column per fact.