AI engineering glossary · Time series recsys
What is changepoint?
Changepoint (also called Change point): A moment at which the behaviour of a series shifts, for example in mean, trend or variance. Detecting them helps flexible trend models and monitoring systems adapt to new regimes.
Changepoint: an example
Daily active users flatten after an app redesign on a particular date.
Related terms
More Time series recsys terms
- Click-through rate
- Click-through rate prediction
- Cointegration
- Collaborative filtering
- Content-based filtering
- Conversion rate
- Correlogram
- Counterfactual evaluation
Where you learn it
Changepoint is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.