Large Language Models are Limited in Out-of-Context Knowledge Reasoning
- URL: http://arxiv.org/abs/2406.07393v3
- Date: Fri, 27 Sep 2024 11:46:37 GMT
- Title: Large Language Models are Limited in Out-of-Context Knowledge Reasoning
- Authors: Peng Hu, Changjiang Gao, Ruiqi Gao, Jiajun Chen, Shujian Huang,
- Abstract summary: Large Language Models (LLMs) possess extensive knowledge and strong capabilities in performing in-context reasoning.
This paper focuses on a significant aspect of out-of-context reasoning: Out-of-Context Knowledge Reasoning (OCKR), which is to combine multiple knowledge to infer new knowledge.
- Score: 65.72847298578071
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Large Language Models (LLMs) possess extensive knowledge and strong capabilities in performing in-context reasoning. However, previous work challenges their out-of-context reasoning ability, i.e., the ability to infer information from their training data, instead of from the context or prompt. This paper focuses on a significant aspect of out-of-context reasoning: Out-of-Context Knowledge Reasoning (OCKR), which is to combine multiple knowledge to infer new knowledge. We designed a synthetic dataset with seven representative OCKR tasks to systematically assess the OCKR capabilities of LLMs. Using this dataset, we evaluated several LLMs and discovered that their proficiency in this aspect is limited, regardless of whether the knowledge is trained in a separate or adjacent training settings. Moreover, training the model to reason with reasoning examples does not result in significant improvement, while training the model to perform explicit knowledge retrieval helps for retrieving attribute knowledge but not the relation knowledge, indicating that the model's limited OCKR capabilities are due to difficulties in knowledge retrieval. Furthermore, we treat cross-lingual knowledge transfer as a distinct form of OCKR, and evaluate this ability. Our results show that the evaluated model also exhibits limited ability in transferring knowledge across languages.
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