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arXiv 2207.03066cs.AI
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基于Meta Controller的设备-云协同推荐

Device-Cloud Collaborative Recommendation via Meta Controller

Shanghai Jiao Tong University(上海交通大学);DAMO Academy, Alibaba Group(阿里巴巴集团达摩院);Ant Group(蚂蚁集团);Hong Kong Baptist University(香港浸会大学)

Jiangchao Yao, Feng Wang, Xichen Ding, Shaohu Chen, Bo Han, Jingren Zhou, Hongxia Yang

摘要:

设备上的机器学习支持在本地客户端中轻量级部署推荐模型,这减轻了基于云的服务器的负担,同时结合了更多的实时用户功能。尽管如此,考虑到其强大的模型容量和从十亿级项目池中高效生成候选项,基于云的推荐在行业中仍然非常重要。以前的尝试,以整合这两种范式的优点,主要是诉诸于一个顺序的机制,建立在基于云的推荐之上的设备上的推荐。然而,这样的设计是不灵活的,当用户的兴趣急剧变化:设备上的模型是由有限的项目缓存卡住,而基于云的推荐基于大的项目池不响应没有新的重新刷新的反馈。为了克服这个问题,我们提出了一个Meta控制器来动态管理设备上的推荐器和基于云的推荐器之间的协作,并从因果关系的角度引入了一种新的高效的样本构造来解决Meta控制器的数据集缺失问题。在反事实样本和扩展训练的基础上,在工业推荐场景中进行了广泛的实验,展示了Meta控制器在设备-云协作中的前景。

英文摘要:

On-device machine learning enables the lightweight deployment of recommendation models in local clients, which reduces the burden of the cloud-based recommenders and simultaneously incorporates more real-time user features. Nevertheless, the cloud-based recommendation in the industry is still very important considering its powerful model capacity and the efficient candidate generation from the billion-scale item pool. Previous attempts to integrate the merits of both paradigms mainly resort to a sequential mechanism, which builds the on-device recommender on top of the cloud-based recommendation. However, such a design is inflexible when user interests dramatically change: the on-device model is stuck by the limited item cache while the cloud-based recommendation based on the large item pool do not respond without the new re-fresh feedback. To overcome this issue, we propose a meta controller to dynamically manage the collaboration between the on-device recommender and the cloud-based recommender, and introduce a novel efficient sample construction from the causal perspective to solve the dataset absence issue of meta controller. On the basis of the counterfactual samples and the extended training, extensive experiments in the industrial recommendation scenarios show the promise of meta controller in the device-cloud collaboration.

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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