Search Results for author: Zhu Sun

Found 21 papers, 9 papers with code

Causal Deconfounding via Confounder Disentanglement for Dual-Target Cross-Domain Recommendation

no code implementations17 Apr 2024 JiaJie Zhu, Yan Wang, Feng Zhu, Zhu Sun

As a result, dual-target CDR has to meet two challenges: (1) how to effectively decouple observed confounders, including single-domain confounders and cross-domain confounders, and (2) how to preserve the positive effects of observed confounders on predicted interactions, while eliminating their negative effects on capturing comprehensive user preferences.

Disentanglement

Does Knowledge Graph Really Matter for Recommender Systems?

1 code implementation4 Apr 2024 Haonan Zhang, Dongxia Wang, Zhu Sun, Yanhui Li, Youcheng Sun, HuiZhi Liang, Wenhai Wang

We consider the scenarios where knowledge in a KG gets completely removed, randomly distorted and decreased, and also where recommendations are for cold-start users.

Knowledge Graphs Recommendation Systems

A Simple Yet Effective Approach for Diversified Session-Based Recommendation

1 code implementation30 Mar 2024 Qing Yin, Hui Fang, Zhu Sun, Yew-Soon Ong

It consists of two novel designs: a model-agnostic diversity-oriented loss function, and a non-invasive category-aware attention mechanism.

Session-Based Recommendations

Re2LLM: Reflective Reinforcement Large Language Model for Session-based Recommendation

no code implementations25 Mar 2024 Ziyan Wang, Yingpeng Du, Zhu Sun, Haoyan Chua, Kaidong Feng, Wenya Wang, Jie Zhang

However, the former methods struggle with optimal prompts to elicit the correct reasoning of LLMs due to the lack of task-specific feedback, leading to unsatisfactory recommendations.

Language Modelling Large Language Model +1

Large Language Model with Graph Convolution for Recommendation

no code implementations14 Feb 2024 Yingpeng Du, Ziyan Wang, Zhu Sun, Haoyan Chua, Hongzhi Liu, Zhonghai Wu, Yining Ma, Jie Zhang, Youchen Sun

To adapt text-based LLMs with structured graphs, We use the LLM as an aggregator in graph processing, allowing it to understand graph-based information step by step.

Hallucination Language Modelling +1

Dynamic In-Context Learning from Nearest Neighbors for Bundle Generation

no code implementations26 Dec 2023 Zhu Sun, Kaidong Feng, Jie Yang, Xinghua Qu, Hui Fang, Yew-Soon Ong, Wenyuan Liu

To enhance reliability and mitigate the hallucination issue, we develop (1) a self-correction strategy to foster mutual improvement in both tasks without supervision signals; and (2) an auto-feedback mechanism to recurrently offer dynamic supervision based on the distinct mistakes made by ChatGPT on various neighbor sessions.

Hallucination In-Context Learning +2

Large Language Models for Intent-Driven Session Recommendations

1 code implementation7 Dec 2023 Zhu Sun, Hongyang Liu, Xinghua Qu, Kaidong Feng, Yan Wang, Yew-Soon Ong

Intent-aware session recommendation (ISR) is pivotal in discerning user intents within sessions for precise predictions.

Meta-learning enhanced next POI recommendation by leveraging check-ins from auxiliary cities

1 code implementation18 Aug 2023 Jinze Wang, Lu Zhang, Zhu Sun, Yew-Soon Ong

Particularly, a city-level correlation strategy is devised to attentively capture common patterns among cities, so as to transfer more relevant knowledge from more correlated cities.

Meta-Learning

Domain Disentanglement with Interpolative Data Augmentation for Dual-Target Cross-Domain Recommendation

no code implementations26 Jul 2023 JiaJie Zhu, Yan Wang, Feng Zhu, Zhu Sun

In DIDA-CDR, we first propose an interpolative data augmentation approach to generating both relevant and diverse augmented user representations to augment sparser domain and explore potential user preferences.

Data Augmentation Disentanglement

Towards Building Voice-based Conversational Recommender Systems: Datasets, Potential Solutions, and Prospects

1 code implementation14 Jun 2023 Xinghua Qu, Hongyang Liu, Zhu Sun, Xiang Yin, Yew Soon Ong, Lu Lu, Zejun Ma

Conversational recommender systems (CRSs) have become crucial emerging research topics in the field of RSs, thanks to their natural advantages of explicitly acquiring user preferences via interactive conversations and revealing the reasons behind recommendations.

Recommendation Systems

A Multi-Channel Next POI Recommendation Framework with Multi-Granularity Check-in Signals

1 code implementation1 Sep 2022 Zhu Sun, Yu Lei, Lu Zhang, Chen Li, Yew-Soon Ong, Jie Zhang

Being equipped with three modules (i. e., global user behavior encoder, local multi-channel encoder, and region-aware weighting strategy), MCMG is capable of capturing both fine- and coarse-grained sequential regularities as well as exploring the dynamic impact of multi-channel by differentiating the region check-in patterns.

Understanding Diversity in Session-Based Recommendation

1 code implementation29 Aug 2022 Qing Yin, Hui Fang, Zhu Sun, Yew-Soon Ong

Besides the "trade-off" relationship, they might be positively correlated with each other, that is, having a same-trend (win-win or lose-lose) relationship, which varies across different methods and datasets.

Session-Based Recommendations

Importance Prioritized Policy Distillation

1 code implementation KDD 2022 Xinghua Qu, Yew-Soon Ong, Abhishek Gupta, Pengfei Wei, Zhu Sun, Zejun Ma

Given such an issue, we denote the \emph{frame importance} as its contribution to the expected reward on a particular frame, and hypothesize that adapting such frame importance could benefit the performance of the distilled student policy.

Atari Games Decision Making +1

DaisyRec 2.0: Benchmarking Recommendation for Rigorous Evaluation

2 code implementations22 Jun 2022 Zhu Sun, Hui Fang, Jie Yang, Xinghua Qu, Hongyang Liu, Di Yu, Yew-Soon Ong, Jie Zhang

Recently, one critical issue looms large in the field of recommender systems -- there are no effective benchmarks for rigorous evaluation -- which consequently leads to unreproducible evaluation and unfair comparison.

Benchmarking Recommendation Systems

Attention over Self-attention:Intention-aware Re-ranking with Dynamic Transformer Encoders for Recommendation

no code implementations14 Jan 2022 Zhuoyi Lin, Sheng Zang, Rundong Wang, Zhu Sun, J. Senthilnath, Chi Xu, Chee-Keong Kwoh

We then introduce a dynamic transformer encoder (DTE) to capture user-specific inter-item relationships among item candidates by seamlessly accommodating the learned latent user intentions via IDM.

Re-Ranking

Synthesising Audio Adversarial Examples for Automatic Speech Recognition

no code implementations29 Sep 2021 Xinghua Qu, Pengfei Wei, Mingyong Gao, Zhu Sun, Yew-Soon Ong, Zejun Ma

Adversarial examples in automatic speech recognition (ASR) are naturally sounded by humans yet capable of fooling well trained ASR models to transcribe incorrectly.

Audio Synthesis Automatic Speech Recognition +2

Adversary Agnostic Robust Deep Reinforcement Learning

no code implementations14 Aug 2020 Xinghua Qu, Yew-Soon Ong, Abhishek Gupta, Zhu Sun

Motivated by this finding, we propose a new policy distillation loss with two terms: 1) a prescription gap maximization loss aiming at simultaneously maximizing the likelihood of the action selected by the teacher policy and the entropy over the remaining actions; 2) a corresponding Jacobian regularization loss that minimizes the magnitude of the gradient with respect to the input state.

Adversarial Robustness Atari Games +2

Hierarchical Attentive Knowledge Graph Embedding for Personalized Recommendation

no code implementations18 Oct 2019 Xiao Sha, Zhu Sun, Jie Zhang

Knowledge graphs (KGs) have proven to be effective for high-quality recommendation, where the connectivities between users and items provide rich and complementary information to user-item interactions.

Knowledge Graph Embedding Knowledge Graphs

Research Commentary on Recommendations with Side Information: A Survey and Research Directions

no code implementations19 Sep 2019 Zhu Sun, Qing Guo, Jie Yang, Hui Fang, Guibing Guo, Jie Zhang, Robin Burke

This Research Commentary aims to provide a comprehensive and systematic survey of the recent research on recommender systems with side information.

Knowledge Graphs Recommendation Systems +1

Interacting Attention-gated Recurrent Networks for Recommendation

no code implementations5 Sep 2017 Wenjie Pei, Jie Yang, Zhu Sun, Jie Zhang, Alessandro Bozzon, David M. J. Tax

In particular, we propose a novel attention scheme to learn the attention scores of user and item history in an interacting way, thus to account for the dependencies between user and item dynamics in shaping user-item interactions.

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