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Introducing new scaled algorithms for improved outlier detection

Blog post from Datadog

Post Details
Company
Date Published
Author
Jee Rim
Word Count
780
Company Posts That Month
16
Language
English
Hacker News Points
1
Post removed?
No
Summary

Outlier algorithms MAD and DBSCAN are effective in identifying hosts behaving differently from others, but may flag outliers among tightly grouped metrics due to their scale-independent nature. ScaledMAD and ScaledDBSCAN are newer scaled outlier algorithms that consider the relative scales of divergence and median data, making them more suitable for monitoring situations where dispersion in metrics is more meaningful in the context of overall magnitude. These algorithms can help detect anomalies within closely clustered groups of metrics when the overall scale of the metrics is large compared to the median distance between hosts and series.

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