Time Series
Definition
A time series assigns consecutive observations to specific points or intervals in time.
A sequence of observations assigned to points or intervals in time and often dependent.
Simply explained
You regularly record a value, for example the number of orders each day. This ordered sequence is a time series.
Why it matters in practice
The term helps to select, develop, evaluate AI systems in a well-founded manner and realistically assess their technical risks.
Example from business
A company records daily order intake along with calendar and data revisions.
Limits and pitfalls
- Irregular intervals, missing values, revisions, and time zones must not be treated as ordinary tables.
Origin & history
Time series analysis developed from astronomy, economics, and signal processing.
Use in mid-sized companies
- Possible application: A company records daily order intake along with calendar and data revisions.
Frequently asked questions
What does time series mean?
A sequence of observations assigned to points or intervals in time and often dependent. What should you watch out for? Irregular intervals, missing values, revisions, and time zones must not be treated as ordinary tables.
Sources
- Time Series · NIST SEMATECH e-Handbook, Time Series
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
Editorially reviewed on: