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Three Kinds of Guess, and Their Data

The big picture

Six ideas fit on one screen.

Three kinds of guess and their data, in six lines
IdeaRemember
Guess a numberRegression learns from past numbers and guesses a new number.
Group with no labelsClustering finds groups in things with no labels. What it compares decides the groups.
Three kinds of guessAsk what comes out. A named group is classification. A number to guess, like a price, is regression. Groups found with no labels are clustering.
What a dataset holdsA dataset is a set of records. Each record is described by attributes. One way to name a dataset is by what it holds.
Structured or unstructured dataStructured data fits rows and columns. Unstructured data does not. A dataset with both is hybrid.
Train, check, testTrain on one part. Improve with a second. Test on a third it never saw.

Ask what comes out. Then ask what the model has never seen.

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This track

  1. 0 Start here
  2. 1 Guessing a number from past data
  3. 2 Making groups when nobody gave labels
  4. 3 Named group, number or found groups?
  5. 4 What a dataset holds
  6. 5 Structured, unstructured or both?
  7. 6 Train, check, test
  8. 7 The big picture
  9. 8 Track quiz

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