hallucinations

Noun

hallucination (countable and uncountable, plural hallucinations)

1. A sensory perception of something that does not exist, often arising from disorder of the nervous system, as in delirium tremens.
   • Hallucinations are always evidence of cerebral derangement and are common phenomena of insanity.1871, William Alexander Hammond, A Treatise on the Diseases of the Nervous System
2. The act of hallucinating; a wandering of the mind; an error, mistake or blunder.
   • This must have been the hallucination of the transcriber.1712 September 8 (Gregorian calendar), [Joseph Addison], “THURSDAY, August 29, 1712”, in The Spectator, number 470; republished in Alexander Chalmers, editor, The Spectator; a New Edition, […]...
3. (artificial intelligence) A confident but incorrect response given by an artificial intelligence; a confabulation.
   • We first identify prominent modes of hallucination by conducting a systematic human study on generated responses which reveals one major source of hallucination as the (mis)-use of wrong entities to describe factual content (Kryscinski et al., 2020), a problem that persists when naively applying...2021 September 14, Nouha Dziri, Andrea Madotto, Osmar Zaiane, Avishek Joey Bose, “Neural Path Hunter: Reducing Hallucination in Dialogue Systems via Path Grounding”, in arXiv:2104.08455 [cs], →DOI...