Mitigating Hallucination in LLMs
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A survey cataloging 32 hallucination-mitigation techniques and organizing them into a practical taxonomy.
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.
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