arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2303.04741cs.IRcs.LG
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GETNext:下一个POI推荐的轨迹流图增强型Transformer

GETNext: Trajectory Flow Map Enhanced Transformer for Next POI Recommendation

The University of Auckland(奥克兰大学)

Song Yang, Jiamou Liu, Kaiqi Zhao

摘要:

下一个POI建议旨在根据用户的当前状态和历史信息预测用户的近期未来移动,为用户和服务提供商提供巨大的价值。然而,这个问题显然是复杂的,因为需要综合考虑各种数据趋势。这包括空间位置,时间背景,用户的喜好,等等。大多数现有的研究认为,下一个POI推荐作为一个序列预测问题,而忽略了其他用户的合作信号。相反,我们提出了一个用户不可知的全局轨迹流图和一个新的图形增强的Transformer模型(GETNext),以更好地利用广泛的协作信号,更准确的下一个POI预测,并减轻冷启动问题的同时。GETNext将全局迁移模式、用户的一般偏好、时空上下文和时间感知的类别嵌入到一个Transformer模型中,以预测用户的未来移动。通过这种设计,我们的模型优于最先进的方法,具有很大的利润,也揭示了冷启动的挑战,在时空涉及的推荐问题。

英文摘要:

Next POI recommendation intends to forecast users' immediate future movements given their current status and historical information, yielding great values for both users and service providers. However, this problem is perceptibly complex because various data trends need to be considered together. This includes the spatial locations, temporal contexts, user's preferences, etc. Most existing studies view the next POI recommendation as a sequence prediction problem while omitting the collaborative signals from other users. Instead, we propose a user-agnostic global trajectory flow map and a novel Graph Enhanced Transformer model (GETNext) to better exploit the extensive collaborative signals for a more accurate next POI prediction, and alleviate the cold start problem in the meantime. GETNext incorporates the global transition patterns, user's general preference, spatio-temporal context, and time-aware category embeddings together into a transformer model to make the prediction of user's future moves. With this design, our model outperforms the state-of-the-art methods with a large margin and also sheds light on the cold start challenges within the spatio-temporal involved recommendation problems.

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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