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A4.2 Data preprocessingA4.2.2

Role of feature selection

Describe the role of feature selection

AHL≈ 50 minCommand term: DescribePremium

In this lesson

  • Describing what a feature is and why the most informative features are kept
  • Distinguishing redundant from irrelevant features
  • Describing filter, wrapper and embedded methods, with their advantages and limitations

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What's inside

  1. LearnFeatures and feature selection
  2. LearnThree strategies
  3. LabSelect features three ways
  4. CheckMatch the method to how it works
  5. CheckQuick check
  6. ExamWorked exam answer
  7. ReviewMistakes examiners see
  8. Exam practiceExam-style questions

Ends with 4 exam-style questions worth 10 marks, with a self-marking markscheme.