no code implementations • 17 Oct 2024 • Guoqing Hu, Zhengyi Yang, Zhibo Cai, An Zhang, Xiang Wang
Recent advancements in generative recommendation systems, particularly in the realm of sequential recommendation tasks, have shown promise in enhancing generalization to new items.
1 code implementation • 14 Oct 2024 • Junkang Wu, Xue Wang, Zhengyi Yang, Jiancan Wu, Jinyang Gao, Bolin Ding, Xiang Wang, Xiangnan He
Aligning large language models (LLMs) with human values and intentions is crucial for their utility, honesty, and safety.
1 code implementation • 11 Jul 2024 • Junkang Wu, Yuexiang Xie, Zhengyi Yang, Jiancan Wu, Jinyang Gao, Bolin Ding, Xiang Wang, Xiangnan He
Direct Preference Optimization (DPO) has emerged as a compelling approach for training Large Language Models (LLMs) to adhere to human preferences.
1 code implementation • 10 Jul 2024 • Junkang Wu, Yuexiang Xie, Zhengyi Yang, Jiancan Wu, Jiawei Chen, Jinyang Gao, Bolin Ding, Xiang Wang, Xiangnan He
We categorize noise into pointwise noise, which includes low-quality data points, and pairwise noise, which encompasses erroneous data pair associations that affect preference rankings.
1 code implementation • 13 Jun 2024 • Yuxin Chen, Junfei Tan, An Zhang, Zhengyi Yang, Leheng Sheng, Enzhi Zhang, Xiang Wang, Tat-Seng Chua
Specifically, we incorporate multiple negatives in user preference data and devise an alternative version of DPO loss tailored for LM-based recommenders, which is extended from the traditional full-ranking Plackett-Luce (PL) model to partial rankings and connected to softmax sampling strategies.
1 code implementation • 23 Feb 2024 • Meng Jiang, Keqin Bao, Jizhi Zhang, Wenjie Wang, Zhengyi Yang, Fuli Feng, Xiangnan He
Towards this goal, we develop a concise and effective framework called IFairLRS to enhance the item-side fairness of an LRS.
1 code implementation • 6 Feb 2024 • Junfeng Fang, Shuai Zhang, Chang Wu, Zhengyi Yang, Zhiyuan Liu, Sihang Li, Kun Wang, Wenjie Du, Xiang Wang
Molecular Relational Learning (MRL), aiming to understand interactions between molecular pairs, plays a pivotal role in advancing biochemical research.
1 code implementation • 5 Dec 2023 • Jiayi Liao, Sihang Li, Zhengyi Yang, Jiancan Wu, Yancheng Yuan, Xiang Wang, Xiangnan He
Treating the "sequential behaviors of users" as a distinct modality beyond texts, we employ a projector to align the traditional recommender's ID embeddings with the LLM's input space.
1 code implementation • NeurIPS 2023 • Zhengyi Yang, Jiancan Wu, Zhicai Wang, Xiang Wang, Yancheng Yuan, Xiangnan He
Scrutinizing previous studies, we can summarize a common learning-to-classify paradigm -- given a positive item, a recommender model performs negative sampling to add negative items and learns to classify whether the user prefers them or not, based on his/her historical interaction sequence.
2 code implementations • 31 Oct 2023 • Zhengyi Yang, Jiancan Wu, Yanchen Luo, Jizhi Zhang, Yancheng Yuan, An Zhang, Xiang Wang, Xiangnan He
Sequential recommendation is to predict the next item of interest for a user, based on her/his interaction history with previous items.
no code implementations • 25 Oct 2023 • Chengpeng Li, Zhengyi Yang, Jizhi Zhang, Jiancan Wu, Dingxian Wang, Xiangnan He, Xiang Wang
Therefore, the data sparsity issue of reward signals and state transitions is very severe, while it has long been overlooked by existing RL recommenders. Worse still, RL methods learn through the trial-and-error mode, but negative feedback cannot be obtained in implicit feedback recommendation tasks, which aggravates the overestimation problem of offline RL recommender.
1 code implementation • 16 Aug 2023 • Keqin Bao, Jizhi Zhang, Wenjie Wang, Yang Zhang, Zhengyi Yang, Yancheng Luo, Chong Chen, Fuli Feng, Qi Tian
As the focus on Large Language Models (LLMs) in the field of recommendation intensifies, the optimization of LLMs for recommendation purposes (referred to as LLM4Rec) assumes a crucial role in augmenting their effectiveness in providing recommendations.
no code implementations • 3 Aug 2023 • Hui Xiong, Congying Chu, Lingzhong Fan, Ming Song, JiaQi Zhang, Yawei Ma, Ruonan Zheng, Junyang Zhang, Zhengyi Yang, Tianzi Jiang
In recent years, advances in neuroscience and artificial intelligence have paved the way for unprecedented opportunities for understanding the complexity of the brain and its emulation by computational systems.
1 code implementation • 27 Jun 2019 • Longbin Lai, Zhu Qing, Zhengyi Yang, Xin Jin, Zhengmin Lai, Ran Wang, Kongzhang Hao, Xuemin Lin, Lu Qin, Wenjie Zhang, Ying Zhang, Zhengping Qian, Jingren Zhou
We conduct extensive experiments for both unlabelled matching and labelled matching to analyze the performance of distributed subgraph matching under various settings, which is finally summarized as a practical guide.
Databases
no code implementations • 2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI 2019) 2019 • Dan Jin, Jian Xu, Kun Zhao, Fangzhou Hu, Zhengyi Yang, Bing Liu, Tianzi Jiang, Yong liu
Modern advancements in deep learning provide a powerful framework for disease classification based on neuroimaging data.
no code implementations • 10 Jan 2018 • Ming Song, Yi Yang, Jianghong He, Zhengyi Yang, Shan Yu, Qiuyou Xie, Xiaoyu Xia, Yuanyuan Dang, Qiang Zhang, Xinhuai Wu, Yue Cui, Bing Hou, Ronghao Yu, Ruxiang Xu, Tianzi Jiang
Disorders of consciousness are a heterogeneous mixture of different diseases or injuries.
Neurons and Cognition