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An Example of Pruning Technique for Outlier Detection

An Example of Pruning Technique for Outlier Detection. 2. 1. 1. Example. Using the distance based method where knn=1, the left-most point is outlier Using pruning: What is the best case? What is the worst case?. Outliers has first ordering. 2. 1. 1. 1. 2. 3. 4.

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An Example of Pruning Technique for Outlier Detection

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  1. An Example of Pruning Technique for Outlier Detection

  2. 2 1 1 Example • Using the distance based method where knn=1, the left-most point is outlier • Using pruning: • What is the best case? • What is the worst case?

  3. Outliers has first ordering 2 1 1 1 2 3 4 • Total # comparisons = 10

  4. Outliers has last ordering 2 1 1 4 3 2 1 • Total # comparisons = 12

  5. Another case 2 1 1 2 3 1 4 • Total # comparisons = 8

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