AI engineering glossary · Time series recsys
What is trend?
Trend: The slow, long-term rise, fall or level movement in a series after short-term ups and downs are ignored. It can be roughly straight or curved, and may change direction over time.
Trend: an example
Monthly smartphone sales in India rising from 10 lakh to 14 lakh units over four years.
Related terms
More Time series recsys terms
- Unit root
- User-based collaborative filtering
- User-item matrix
- Vector autoregression
- Volatility clustering
- Weak stationarity
- Weighted absolute percentage error
- White noise
Where you learn it
Trend is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.