An Example of Pruning Technique for Outlier Detection

1 / 5

# An Example of Pruning Technique for Outlier Detection - PowerPoint PPT Presentation

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.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' An Example of Pruning Technique for Outlier Detection' - grant-holden

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### 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

• Total # comparisons = 10
Outliers has last ordering

2

1

1

4

3

2

1

• Total # comparisons = 12
Another case

2

1

1

2

3

1

4

• Total # comparisons = 8