Mitigating Hallucination in LLMs

32 techniques: Covers prompting strategies (CoT, CoVe, self-consistency), retrieval-based approaches (RAG, knowledge retrieval), and decoding-time interventions under a single framework.

Four-category taxonomy: Organizes methods by whether they intervene at prompting, training, retrieval, or decoding - giving practitioners a clean mental model for picking tools.

Application tips: Offers concrete guidance on when each technique is likely to help vs. waste resources, including trade-offs between compute cost and hallucination reduction.

Open challenges: Identifies ongoing research gaps including hallucination detection, robust evaluation, and joint optimization of hallucination and task quality.