摘要
传统的新闻推荐用户建模方法难以深入解析新闻的复杂语义和用户的真实需求,为此提出了一种知识增强的新闻建模方法,通过实体表示层、上下文嵌入层和注意力聚合层获取新闻文档表示。在此基础上提出了一种基于知识增强文档的细粒度用户建模方法,利用长文档建模技术将知识增强的新闻文档串联成长文档,通过捕获文档间的词级交互行为得到细粒度用户表示;通过捕获文档内的实体交互行为得到粗粒度用户表示,粗粒度的用户表示和细粒度的用户表示聚合得到最终的用户表示。实验结果显示,提出的新闻建模方法在AUC和NDCG@10指标上优于基线模型,基于此方法的用户建模方法在AUC上至少提升2.51%,在NDCG@10上至少提升4.75%。
Traditional user modeling methods for news recommendation struggle to deeply analyze the complex semantics of news and the genuine needs of users.To address this issue,this paper first proposes a knowledge-enhanced news modeling approach,which obtains news document representations through an entity representation layer,a context embedding layer,and an attention aggregation layer.Based on this,a fine-grained user modeling method based on knowledge-enhanced documents is proposed,utilizing long document modeling techniques to concatenate knowledge-enhanced news documents into a long document.Fine-grained user representations are obtained by capturing word-level interactions between documents,while coarse-grained user representations are derived from capturing entity interactions within documents.The final user representation is aggregated from both coarse-grained and fine-grained user representations.Experimental results show that the proposed news modeling method outperforms baseline models in terms of AUC and NDCG@10 metrics,with the user modeling method based on this approach achieving at least a 2.51%improvement in AUC and at least a 4.75%improvement in NDCG@10.
作者
熊晓波
方文涛
XIONG Xiaobo;FANG Wentao(Hunan Expressway Group Co.,Ltd.,Changsha,Hunan 410153,China;Zoomlion Heavy Industry Science&Technology Co.,Ltd.,Changsha,Hunan 410013,China)
出处
《计算技术与自动化》
2024年第4期161-166,共6页
Computing Technology and Automation
关键词
新闻建模
用户建模
知识图谱
细粒度
个性化新闻推荐
news modeling
user modeling
knowledge graph
fine-grained
personalized news recommendation
