arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.05928cs.IR
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基于属性感知产品网络的推荐:一个表示学习模型

Recommendation with Attribute-aware Product Networks: A Representation Learning Model

Guannan Liu, Liang Zhang, Junjie Wu, Xiao Fang

摘要:

随着商业智能的繁荣,推荐系统已经发展到一个新的阶段,我们不仅关心推荐什么,而且关心为什么推荐。因此,建议的可解释性成为研究的焦点,并在电子商务中变得非常理想。沿着这条线的不确定性研究通常从不同的角度利用项目属性和相关性,但他们还缺乏一种有效的方法来结合这两种类型的信息,以进行个性化兴趣的深度学习。鉴于此,我们提出了一种新的图结构,\emph{attribute network},基于项目的共同购买网络和重要属性。然后提出了一种新的神经模型称为\emph{eRAN}属性网络的可解释性和冷启动能力产生的建议。具体而言,eRAN首先通过深度自编码器将属性网络中连接的项目映射到低维嵌入向量,然后应用注意力机制对属性对用户的吸引力进行建模,由此可以导出个性化的项目表示。此外,成对排序损失被构造到eRAN中以改善推荐,假设用户共同购买的项目对应该比那些在个性化视图中具有负采样的非配对项目更相似。在真实数据集上的实验表明,与一些最先进的竞争对手相比,我们的方法是有效的。特别是,eRAN在以更高的准确性推荐冷启动项目以及理解复杂的共同购买行为背后的用户偏好方面显示出其独特的能力。

英文摘要:

With the prosperity of business intelligence, recommender systems have evolved into a new stage that we not only care about what to recommend, but why it is recommended. Explainability of recommendations thus emerges as a focal point of research and becomes extremely desired in e-commerce. Existent studies along this line often exploit item attributes and correlations from different perspectives, but they yet lack an effective way to combine both types of information for deep learning of personalized interests. In light of this, we propose a novel graph structure, \emph{attribute network}, based on both items' co-purchase network and important attributes. A novel neural model called \emph{eRAN} is then proposed to generate recommendations from attribute networks with explainability and cold-start capability. Specifically, eRAN first maps items connected in attribute networks to low-dimensional embedding vectors through a deep autoencoder, and then an attention mechanism is applied to model the attractions of attributes to users, from which personalized item representation can be derived. Moreover, a pairwise ranking loss is constructed into eRAN to improve recommendations, with the assumption that item pairs co-purchased by a user should be more similar than those non-paired with negative sampling in personalized view. Experiments on real-world datasets demonstrate the effectiveness of our method compared with some state-of-the-art competitors. In particular, eRAN shows its unique abilities in recommending cold-start items with higher accuracy, as well as in understanding user preferences underlying complicated co-purchasing behaviors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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