Search Results for author: Zhengyi Yang

Found 11 papers, 7 papers with code

Item-side Fairness of Large Language Model-based Recommendation System

1 code implementation23 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.

Fairness Language Modelling +2

MolTC: Towards Molecular Relational Modeling In Language Models

1 code implementation6 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.

Relational Reasoning

LLaRA: Large Language-Recommendation Assistant

1 code implementation5 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.

Language Modelling Sequential Recommendation +1

Generate What You Prefer: Reshaping Sequential Recommendation via Guided Diffusion

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.

Denoising Sequential Recommendation

Large Language Model Can Interpret Latent Space of Sequential Recommender

2 code implementations31 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.

Language Modelling Large Language Model +1

Model-enhanced Contrastive Reinforcement Learning for Sequential Recommendation

no code implementations25 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.

Contrastive Learning Offline RL +3

A Bi-Step Grounding Paradigm for Large Language Models in Recommendation Systems

1 code implementation16 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.

Collaborative Filtering Recommendation Systems

Digital twin brain: a bridge between biological intelligence and artificial intelligence

no code implementations3 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.

A Survey and Experimental Analysis of Distributed Subgraph Matching

1 code implementation27 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

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