no code implementations • 2 Jun 2020 • Yifei Zhao, Yu-Hang Zhou, Mingdong Ou, Huan Xu, Nan Li
To maximize cumulative user engagement (e. g. cumulative clicks) in sequential recommendation, it is often needed to tradeoff two potentially conflicting objectives, that is, pursuing higher immediate user engagement (e. g., click-through rate) and encouraging user browsing (i. e., more items exposured).
1 code implementation • 2020 • Mingdong Ou, Peng Cui, Jian Pei, Ziwei Zhang, Wenwu Zhu
In particular, we develop a novel graph embedding algorithm, High-Order Proximity preserved Embedding (HOPE for short), which is scalable to preserve high-order proximities of large scale graphs and capable of capturing the asymmetric transitivity.
no code implementations • 8 May 2018 • Mingdong Ou, Nan Li, Shenghuo Zhu, Rong Jin
In each round, the player selects a $K$-cardinality subset from $N$ candidate items, and receives a reward which is governed by a {\it multinomial logit} (MNL) choice model considering both item utility and substitution property among items.