Abstract
Abstract. Large language models (LLM) have made significant achievements in the field of natural language processing, but the generated text often contains content that is inconsistent with the real world or user input, known as hallucinations. This article investigates the current situation of hallucinations in LLM, including the definition, types, causes, and solutions of hallucinations. Illusions are divided into different types such as factual and faithful, mainly caused by factors such as training data defects, low utilization of facts, and randomness in the decoding process. The phenomenon of hallucinations poses a threat to the reliability of LLM, especially in fields such as healthcare, finance, and law, which may lead to serious consequences. To address this issue, this article investigates methods such as managing training datasets, knowledge editing, and enhancing retrieval generation. Future research should classify and evaluate illusions more finely, explore multimodal strategies, enhance model stability, and integrate human intelligence and artificial intelligence to jointly address challenges, promoting the continuous progress of LLM.
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