Show HN: Outliers-Series Outlier Detector

[abrdk]

Outliers - a time-series outlier detector. Demo: https://outliers.up.railway.app/ GitHub: https://github.com/andrewbrdk/Outliers

The service runs outlier-detection algorithms on time-series metrics and alerts you when outliers are found. Supported: -PostgreSQL -Email & Slack notifications -Detection Methods: Threshold, Deviation from the Mean, Interquartile Range

Give it a try!

[gus_massa]

It would be nice to have a version that can show a short explanation of each method.

What happened to the zh version that is full of outliers?

[abrdk]

Thanks for the feedback!

The zh.wikipedia demo uses a simple method: it averages the previous 30 days and checks whether the current value is within ±10%.

As for the zh data itself, starting from late March 2025 it changes irregularly compared to other languages and even to its own 2024 pattern. That usually points to data issues — maybe bots or crawlers — though there could also be another cause.