Hallucination

Definition

When an AI model generates plausible-sounding but factually incorrect or fabricated information.

In-Depth Explanation

Hallucinations occur because language models generate statistically likely text rather than retrieving verified facts. They can confidently state false information, invent citations, or create fictional events. Mitigation strategies include RAG, fact-checking, and improved training techniques.

Real-World Example

An LLM might confidently cite a research paper that does not exist when asked for sources.

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Related Terms

Large Language Model(LLM)

A type of AI model trained on massive amounts of text data to understand, generate, and manipulate human language.

Retrieval-Augmented Generation(RAG)

A technique that enhances LLM outputs by retrieving relevant information from external knowledge bases before generating responses.