Few-Shot, No Problem: Descriptive Continual Relation Extraction

Few-shot Continual Relation Extraction is a crucial challenge for enabling AI systems to identify and adapt to evolving relationships in dynamic real-world domains. Traditional memory-based approaches often overfit to limited samples, failing to reinforce old knowledge, with the scarcity of data in few-shot scenarios further exacerbating these issues by hindering effective data augmentation in the latent space. In this paper, we propose a novel retrieval-based solution, starting with a large language model to generate descriptions for each relation. From these descriptions, we introduce a bi-encoder retrieval training paradigm to enrich both sample and class representation learning. Leveraging these enhanced representations, we design a retrieval-based prediction method where each sample "retrieves" the best fitting relation via a reciprocal rank fusion score that integrates both relation description vectors and class prototypes. Extensive experiments on multiple datasets demonstrate that our method significantly advances the state-of-the-art by maintaining robust performance across sequential tasks, effectively addressing catastrophic forgetting.

Authors

• Nguyen Xuan Thanh Oraichain Labs
• Anh Duc Le Hanoi University of Science and Technology
• Quyen Tran VinAI Research
• Thanh-Thien Le VinAI Research
• Linh Ngo Van Hanoi University of Science and Technology
• Thien Huu Nguyen University of Oregon, Eugene, Oregon, USA

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