基于深度学习的实体关系抽取方法文献综述

易 战军, 曾 锐
宜春学院人工智能与信息工程学院

摘要


实体关系抽取作为自然语言处理(NLP)领域信息抽取的核心任务,在知识图谱构建、智能问答等场景中
发挥关键作用,其效率与准确性直接影响海量非结构化文本的价值挖掘。深度学习凭借自主特征学习能力成为实体
关系抽取主流技术,递归神经网络(RNN)及其变体(LSTM、Bi-LSTM)通过时序建模解决长距离依赖问题,但
存在参数训练复杂或训练周期长等不足;卷积神经网络(CNN)利用卷积与池化操作高效提取局部语义特征,结合
位置特征等改进进一步提升性能,却在长句建模中存在局限;图神经网络(GNN)通过图结构与节点交互优化全局
关系建模,在文档级实体关系抽取中优势显著,其优化聚焦依存树剪枝、多模态图表示等方向;联合学习通过参数
共享或序列标注实现端到端建模,部分方法针对特定领域优化特征融合,提升抽取鲁棒性;大语言模型(LLM)借
助大规模预训练与微调增强语义理解和泛化能力,在低资源、零样本场景及专业术语处理中表现突出,参数高效微
调等技术进一步优化其性能。

关键词


实体关系抽取;RNN;LSTM;CNN;GNN;LLM

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参考


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