AdaBoost, Clearly Explained

AdaBoost, Clearly Explained

StatQuest with Josh Starmer via YouTube Direct link

Determining the Amount of Say for a stump

5 of 11

5 of 11

Determining the Amount of Say for a stump

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AdaBoost, Clearly Explained

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  1. 1 Awesome song and introduction
  2. 2 The three main ideas behind AdaBoost
  3. 3 Review of the three main ideas
  4. 4 Building a stump with the GINI index
  5. 5 Determining the Amount of Say for a stump
  6. 6 Updating sample weights
  7. 7 Normalizing the sample weights
  8. 8 Using the normalized weights to make the second stump
  9. 9 Using stumps to make classifications
  10. 10 Review of the three main ideas behind AdaBoost
  11. 11 . The Amount of Say for Chest Pain = 1/2*log1-3/8/3/8 = 1/2*log5/8/3/8 = 1/2*log5/3 = 0.25, not 0.42.

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