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arXiv 1704.04576cs.IRcs.AI
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NEXT:Next POI建议书的神经网络框架

NEXT: A Neural Network Framework for Next POI Recommendation

Wuhan University(武汉大学);Nanyang Technological University(南洋理工大学);State Key Lab of Mathematical Engineering and Advanced Computing(数学工程与先进计算国家重点实验室)

Zhiqian Zhang, Chenliang Li, Zhiyong Wu, Aixin Sun, Dengpan Ye, Xiangyang Luo

摘要:

下一个兴趣点推荐的任务近年来得到了广泛的研究。然而,开发一个统一的推荐框架,将与POI和用户相关联的多个因素仍然具有挑战性,因为这些信息的异质性。此外,处理冷启动和赋予系统可解释性的有效机制也是困难的话题。受近年来神经网络在许多领域取得的成功的启发,本文提出了一个简单而有效的神经网络框架,用于下一个兴趣点推荐,命名为NEXT。NEXT是一个统一的框架,通过以统一的方式结合不同的因素来学习关于用户下一步行动的隐藏意图。具体来说,在NEXT中,我们结合了元数据信息和两种时间上下文(即,时间间隔和就诊时间)。为了利用顺序关系和地理影响,我们建议采用DeepWalk,一种网络表示学习技术,来编码这些知识。我们评估的有效性NEXT对国家的最先进的替代品和神经网络为基础的解决方案。在三个公开数据集上的实验结果表明,NEXT在实时下一个兴趣点推荐方面明显优于基线。进一步的实验证明了NEXT在处理冷启动方面的优越性。更重要的是,我们表明,NEXT提供了有意义的解释的尺寸在隐藏的意图空间。

英文摘要:

The task of next POI recommendation has been studied extensively in recent years. However, developing an unified recommendation framework to incorporate multiple factors associated with both POIs and users remains challenging, because of the heterogeneity nature of these information. Further, effective mechanisms to handle cold-start and endow the system with interpretability are also difficult topics. Inspired by the recent success of neural networks in many areas, in this paper, we present a simple but effective neural network framework for next POI recommendation, named NEXT. NEXT is an unified framework to learn the hidden intent regarding user's next move, by incorporating different factors in an unified manner. Specifically, in NEXT, we incorporate meta-data information and two kinds of temporal contexts (i.e., time interval and visit time). To leverage sequential relations and geographical influence, we propose to adopt DeepWalk, a network representation learning technique, to encode such knowledge. We evaluate the effectiveness of NEXT against state-of-the-art alternatives and neural networks based solutions. Experimental results over three publicly available datasets demonstrate that NEXT significantly outperforms baselines in real-time next POI recommendation. Further experiments demonstrate the superiority of NEXT in handling cold-start. More importantly, we show that NEXT provides meaningful explanation of the dimensions in hidden intent space.

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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