c. 1987 AD–c. 1993 AD
The expert-systems commercial downturn
Artificial intelligence · Institutions and funding
From the late 1980s, commercial expectations for expert systems declined and some public AI programs contracted. This process, associated with the second AI winter, coexisted with active research; its temporal and geographic boundaries are approximate.
Precision, calendar, and review
- Start
- year · approximate
- End
- year · approximate
- Calendar and convention
- Historical-era years; the source calendar is not identified. No conversion of days is assumed.
- Year zero
- The scale goes from 1 BCE to 1 CE without year zero. Changing era names changes labels only.
- Documentary review
- 2026-09-20
- Dating note
- 1987–1993 is a conventional window, not a worldwide shutdown of research.
Reading the date: duration of a process.
Sources
- zoo.cs.yale.edu (opens in a new tab)
Source provenance and scope
- Publication date
- 2024-02
- What this date describes
- The cited source or edition; it may postdate the historical event.
- Bibliographic date checked
- 2026-09-23
- Access date
- 2026-09-20
The correspondence between this reference and individual claims has not yet been itemized.
This record is an editorial synthesis. Consult the sources to check claims and their limits. Chronological relationships alone do not establish causation.