Hallucination Survey (Early)

Hallucination types: Distinguishes factual hallucinations, logical hallucinations, and contextual hallucinations, showing they require different mitigation approaches.

Evaluation criteria: Reviews evaluation metrics for detecting and quantifying hallucinations, covering automatic metrics, LLM-as-judge, and human evaluation.

Mitigation catalog: Organizes mitigation strategies by training stage (pretraining, SFT, RLHF) and inference stage (RAG, decoding, verification).

Reference snapshot: Captures the state of hallucination research mid-2023, providing a useful anchor for tracking how the field evolved through 2024.