Hallucination and Model Behavior

Hallucination is often used for confident output that is not grounded or true.

From the language-modeling view, this is not mysterious. The model generates likely continuations from learned patterns and context. Likely text is not the same as verified truth.

Reducing hallucination can involve better data, retrieval, tool use, instruction tuning, evaluation, uncertainty handling, and product design. It is not solved by the next-token objective alone.

Exercise

Is likely text always the same as verified truth? Answer 1 for yes or 0 for no.