Graph-based Regularization on Embedding Layers for Recommendation
Graph-based Regularization on Embedding Layers for Recommendation
复制标题
基于图的嵌入层正则化推荐
DOI:
10.1145/3414067
复制
发表时间:
2020-09
影响因子:
5.6
通讯作者:
Yan Zhang
中科院分区:
文献类型:
--
作者:
Yuan Zhang;Fei Sun;Xiaoyong Yang;Chen Xu;Wenwu Ou;Yan Zhang
Neural networks have been extensively used in recommender systems. Embedding layers are not only necessary but also crucial for neural models in recommendation as a typical discrete task. In this article, we argue that the widely used l2 regularization for normal neural layers (e.g., fully connected layers) is not ideal for embedding layers from the perspective of regularization theory in Reproducing Kernel Hilbert Space. More specifically, the l2 regularization corresponds to the inner product and the distance in the Euclidean space where correlations between discrete objects (e.g., items) are not well captured. Inspired by this observation, we propose a graph-based regularization approach to serve as a counterpart of the l2 regularization for embedding layers. The proposed regularization incurs almost no extra computational overhead especially when being trained with mini-batches. We also discuss its relationships to other approaches (namely, data augmentation, graph convolution, and joint learning) theoretically. We conducted extensive experiments on five publicly available datasets from various domains with two state-of-the-art recommendation models. Results show that given a kNN (k-nearest neighbor) graph constructed directly from training data without external information, the proposed approach significantly outperforms the l2 regularization on all the datasets and achieves more notable improvements for long-tail users and items.
登录
查看更多内容
DOI:
--
发表时间:
2003-12
期刊:
--
影响因子:
--
作者:
Benjamin M Marlin
通讯作者:
Benjamin M Marlin
DOI:
10.1145/3292500.3330956
发表时间:
2019-05
期刊:
Proceedings of the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining
影响因子:
--
作者:
Saurabh Verma;Zhi-Li Zhang
通讯作者:
Saurabh Verma;Zhi-Li Zhang
DOI:
10.1145/2959100.2959182
发表时间:
2016-09
期刊:
Proceedings of the 10th ACM Conference on Recommender Systems
影响因子:
--
作者:
Dawen Liang;Jaan Altosaar;Laurent Charlin;D. Blei
通讯作者:
Dawen Liang;Jaan Altosaar;Laurent Charlin;D. Blei
DOI:
10.1145/3219819.3219826
发表时间:
2018-01
期刊:
Proceedings of the 24th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining
影响因子:
--
作者:
Han Zhu;Pengye Zhang;Guozheng Li;Jie He;Han Li;Kun Gai
通讯作者:
Han Zhu;Pengye Zhang;Guozheng Li;Jie He;Han Li;Kun Gai
影响因子:
3.4
作者:
Harper, F. Maxwell;Konstan, Joseph A.
通讯作者:
Konstan, Joseph A.