no code implementations • 26 Mar 2024 • Yiqun Chen, Jiaxin Mao, Yi Zhang, Dehong Ma, Long Xia, Jun Fan, Daiting Shi, Zhicong Cheng, Simiu Gu, Dawei Yin
The objective of search result diversification (SRD) is to ensure that selected documents cover as many different subtopics as possible.
1 code implementation • 25 Feb 2024 • Jiabin Tang, Yuhao Yang, Wei Wei, Lei Shi, Long Xia, Dawei Yin, Chao Huang
However, existing frameworks for heterogeneous graph learning have limitations in generalizing across diverse heterogeneous graph datasets.
1 code implementation • 25 Feb 2024 • Zhonghang Li, Lianghao Xia, Jiabin Tang, Yong Xu, Lei Shi, Long Xia, Dawei Yin, Chao Huang
These findings highlight the potential of building large language models for spatio-temporal learning, particularly in zero-shot scenarios where labeled data is scarce.
no code implementations • 6 Jan 2024 • Qian Li, Lixin Su, Jiashu Zhao, Long Xia, Hengyi Cai, Suqi Cheng, Hengzhu Tang, Junfeng Wang, Dawei Yin
Compared to conventional textual retrieval, the main obstacle for text-video retrieval is the semantic gap between the textual nature of queries and the visual richness of video content.
no code implementations • 21 Sep 2022 • Yumin Zhang, Yawen Hou, Xiuyi Chen, Hongyuan Yu, Long Xia
In the SAP, the semantic knowledge learned from the source lesion domain is transferred to consecutive target lesion domains.
no code implementations • 31 Mar 2022 • Weiqi Shao, Xu Chen, Long Xia, Jiashu Zhao, Dawei Yin
To solve this problem, in this paper, we propose a novel sequential recommender model via decomposing and modeling user independent preferences.
no code implementations • 6 Dec 2021 • Weiqi Shao, Xu Chen, Jiashu Zhao, Long Xia, Dawei Yin
It is necessary to learn a dynamic group of representations according the item groups in a user historical behavior.
no code implementations • 6 Dec 2021 • Weiqi Shao, Xu Chen, Jiashu Zhao, Long Xia, Dawei Yin
We propose a sequential model with dynamic number of representations for recommendation systems (RDRSR).
no code implementations • 4 May 2021 • Lixin Zou, Long Xia, Linfang Hou, Xiangyu Zhao, Dawei Yin
This work introduces a practical, data-efficient policy learning method, named Variance-Bonus Monte Carlo Tree Search~(VB-MCTS), which can copy with very little data and facilitate learning from scratch in only a few trials.
1 code implementation • 4 Jul 2020 • Lixin Zou, Long Xia, Yulong Gu, Xiangyu Zhao, Weidong Liu, Jimmy Xiangji Huang, Dawei Yin
Therefore, the proposed exploration policy, to balance between learning the user profile and making accurate recommendations, can be directly optimized by maximizing users' long-term satisfaction with reinforcement learning.
no code implementations • 23 Jul 2019 • Li He, Long Xia, Wei Zeng, Zhi-Ming Ma, Yihong Zhao, Dawei Yin
To make full use of such historical data, learning policies from multiple loggers becomes necessary.
no code implementations • 27 Jun 2019 • Xiangyu Zhao, Long Xia, Lixin Zou, Dawei Yin, Jiliang Tang
Thus, it calls for a user simulator that can mimic real users' behaviors where we can pre-train and evaluate new recommendation algorithms.
no code implementations • 13 Feb 2019 • Lixin Zou, Long Xia, Zhuoye Ding, Jiaxing Song, Weidong Liu, Dawei Yin
Though reinforcement learning~(RL) naturally fits the problem of maximizing the long term rewards, applying RL to optimize long-term user engagement is still facing challenges: user behaviors are versatile and difficult to model, which typically consists of both instant feedback~(e. g. clicks, ordering) and delayed feedback~(e. g. dwell time, revisit); in addition, performing effective off-policy learning is still immature, especially when combining bootstrapping and function approximation.
no code implementations • 11 Feb 2019 • Xiangyu Zhao, Long Xia, Linxin Zou, Hui Liu, Dawei Yin, Jiliang Tang
With the recent prevalence of Reinforcement Learning (RL), there have been tremendous interests in developing RL-based recommender systems.
Multi-agent Reinforcement Learning Recommendation Systems +1
no code implementations • 18 Dec 2018 • Xiangyu Zhao, Long Xia, Jiliang Tang, Dawei Yin
Search, recommendation, and online advertising are the three most important information-providing mechanisms on the web.
no code implementations • 7 May 2018 • Xiangyu Zhao, Long Xia, Liang Zhang, Zhuoye Ding, Dawei Yin, Jiliang Tang
In particular, we propose a principled approach to jointly generate a set of complementary items and the corresponding strategy to display them in a 2-D page; and propose a novel page-wise recommendation framework based on deep reinforcement learning, DeepPage, which can optimize a page of items with proper display based on real-time feedback from users.
no code implementations • 19 Feb 2018 • Xiangyu Zhao, Liang Zhang, Zhuoye Ding, Long Xia, Jiliang Tang, Dawei Yin
Users' feedback can be positive and negative and both types of feedback have great potentials to boost recommendations.
7 code implementations • 30 Dec 2017 • Xiangyu Zhao, Liang Zhang, Long Xia, Zhuoye Ding, Dawei Yin, Jiliang Tang
Recommender systems play a crucial role in mitigating the problem of information overload by suggesting users' personalized items or services.
no code implementations • 8 Nov 2016 • Yu-feng Ma, Long Xia, Wenqi Shen, Mi Zhou, Weiguo Fan
With the emerging of various online video platforms like Youtube, Youku and LeTV, online TV series' reviews become more and more important both for viewers and producers.