Core Concepts
Large language models can effectively perform few-shot relation extraction tasks with the CoT-ER approach, outperforming fully-supervised methods.
Abstract
Few-shot relation extraction involves identifying relationships between entities with limited annotated samples.
Meta-learning and neural graph techniques are commonly used for this task.
In-context learning has shown promising results without training.
CoT-ER proposes a novel approach using large language models for relation extraction.
Experimental results show competitive performance with fully-supervised methods.
Related work includes FewRel datasets and in-context learning methods.
CoT-ER consists of Human-Instructed Reasoning, Instance Retrieval, and Inference Modules.
Ablation study demonstrates the importance of entity information in CoT-ER.
Stability analysis shows consistent performance of CoT-ER across different random seeds.
Case study highlights the effectiveness of CoT-ER in correctly identifying relation labels.
Limitations include constraints on maximum length and the need for more informative seed examples.
Ethical considerations regarding bias in language models are acknowledged.
Stats
Few-shot relation extraction involves identifying the type of relationship between two specific entities within a text, using a limited number of annotated samples.
Few studies have utilized in-context learning for zero-shot information extraction.
CoT-ER achieves competitive performance compared to fully-supervised methods on FewRel 1.0 and FewRel 2.0 datasets.
Quotes
"Few-shot relation extraction involves identifying the type of relationship between two specific entities within a text, using a limited number of annotated samples."
"CoT-ER proposes a novel approach for few-shot relation extraction using large language models."