activity
20222026
most citedDecentralized Collaborative Learning Framework for Next POI Recommendation

5 citations · 17 across the 27 of their papers we have counts for

collaborators

29 papers

cs.IR2026

Empowering Compact LLMs with Fusion of Layer-wise Exits for Recommendation

Xurong Liang, Tong Chen, Quoc Viet Hung Nguyen +3

Large language model-based recommender systems (LLM-RSs) have demonstrated remarkable capabilities, but are computationally unsustainable for many real-world applications. Compact…

cs.AI2026

ODYSSE: Episode-wise Policy Optimization for Personalized Agentic Reasoning

Jiaqi Zhang, Tong Chen, Junliang Yu +2

Agentic systems have rapidly advanced in their ability to interact with real-world environments, leverage external tools, and provide services for users. However, unlike natural-wo…

cs.IR2026

VaLiDRec: Variable-Length LLM-Aligned Semantic IDs for Generative Recommendation

Shutong Qiao, Wei Yuan, Tong Chen +3

Generative recommendation commonly represents items using fixed-length semantic identifiers (SIDs) constructed through clustering and quantization. However, these artificial codes…

cs.CL2026

Overview of the MedHopQA track at BioCreative IX: track description, participation and evaluation of systems for multi-hop medical question answering

Rezarta Islamaj, Joey Chan, Robert Leaman +13

Multi-hop question answering (QA) remains a significant challenge in the biomedical domain, requiring systems to integrate information across multiple sources to answer complex que…

cs.LG2026

GRAFT: Graph-Tokenized LLMs for Tool Planning

Xinyi Gao, Xinyu Ren, Junliang Yu +3

Large language models (LLMs) are increasingly used to complete complex tasks by selecting and coordinating external tools across multiple steps. This requires aligning tool choices…

cs.IR2026

Self-Distilled Reinforcement Learning for Co-Evolving Agentic Recommender Systems

Zongwei Wang, Min Gao, Hongzhi Yin +5

Large language model-empowered agentic recommender systems (ARS) reformulate recommendation as a multi-turn interaction between a recommender agent and a user agent, enabling itera…

cs.DB2026

AV-SQL: Decomposing Complex Text-to-SQL Queries with Agentic Views

Minh Tam Pham, Trinh Pham, Tong Chen +3

Text-to-SQL is the task of translating natural language queries into executable SQL for a given database, enabling non-expert users to access structured data without writing SQL ma…

cs.MM2026

Agentic Mixed-Source Multi-Modal Misinformation Detection with Adaptive Test-Time Scaling

Wei Jiang, Tong Chen, Wei Yuan +2

Vision-language models (VLMs) have been proven effective for detecting multi-modal misinformation on social platforms, especially in zero-shot settings with unavailable or delayed…

cs.CL2026

An Efficient and Effective Evaluator for Text2SQL Models on Unseen and Unlabeled Data

Trinh Pham, Thanh Tam Nguyen, Viet Huynh +2

Recent advances in large language models have strengthened Text2SQL systems that translate natural language questions into database queries. A persistent deployment challenge is to…

cs.IR2026

Evolutionary Router Feature Generation for Zero-Shot Graph Anomaly Detection with Mixture-of-Experts

Haiyang Jiang, Tong Chen, Xinyi Gao +3

Zero-shot graph anomaly detection (GAD) has attracted increasing attention recent years, yet the heterogeneity of graph structures, features, and anomaly patterns across graphs mak…

cs.IR2026

When Text-as-Vision Meets Semantic IDs in Generative Recommendation: An Empirical Study

Shutong Qiao, Wei Yuan, Tong Chen +3

Semantic ID learning is a key interface in Generative Recommendation (GR) models, mapping items to discrete identifiers grounded in side information, most commonly via a pretrained…

cs.IR2026

Integrating Vision-Centric Text Understanding for Conversational Recommender Systems

Wei Yuan, Shutong Qiao, Tong Chen +3

Conversational Recommender Systems (CRSs) have attracted growing attention for their ability to deliver personalized recommendations through natural language interactions. To more…

cs.LG2026

Efficient Content-based Recommendation Model Training via Noise-aware Coreset Selection

Hung Vinh Tran, Tong Chen, Hechuan Wen +3

Content-based recommendation systems (CRSs) utilize content features to predict user-item interactions, serving as essential tools for helping users navigate information-rich web s…

cs.CL2026

QA-Merging: Query-Adaptive Reasoning via Layer Selective Model Merging

Zhaofeng Zhong, Wei Yuan, Tong Chen +4

Recent large reasoning models (LRMs) have achieved strong performance on complex reasoning tasks by generating a long chain-of-thought (Long-CoT). However, such lengthy reasoning i…

cs.LG2025★ 1 cited

Learning Reconfigurable Representations for Multimodal Federated Learning with Missing Data

Duong M. Nguyen, Trong Nghia Hoang, Thanh Trung Huynh +2

Multimodal federated learning in real-world settings often encounters incomplete and heterogeneous data across clients. This results in misaligned local feature representations tha…

cs.CL2025

TableDART: Dynamic Adaptive Multi-Modal Routing for Table Understanding

Xiaobo Xing, Wei Yuan, Tong Chen +3

Modeling semantic and structural information from tabular data remains a core challenge for effective table understanding. Existing Table-as-Text approaches flatten tables for larg…

cs.SI2025

Towards Propagation-aware Representation Learning for Supervised Social Media Graph Analytics

Wei Jiang, Tong Chen, Wei Yuan +3

Social media platforms generate vast, complex graph-structured data, facilitating diverse tasks such as rumor detection, bot identification, and influence modeling. Real-world appl…

cs.LG2025

Controllable and Stealthy Shilling Attacks via Dispersive Latent Diffusion

Shutong Qiao, Wei Yuan, Junliang Yu +3

Recommender systems (RSs) are now fundamental to various online platforms, but their dependence on user-contributed data leaves them vulnerable to shilling attacks that can manipul…

cs.IR2025

Efficient Multimodal Streaming Recommendation via Expandable Side Mixture-of-Experts

Yunke Qu, Liang Qu, Tong Chen +2

Streaming recommender systems (SRSs) are widely deployed in real-world applications, where user interests shift and new items arrive over time. As a result, effectively capturing u…

cs.LG2024

Tackling Data Heterogeneity in Federated Time Series Forecasting

Wei Yuan, Guanhua Ye, Xiangyu Zhao +3

Time series forecasting plays a critical role in various real-world applications, including energy consumption prediction, disease transmission monitoring, and weather forecasting.…

cs.IR2024★ 1 cited

Harnessing Large Language Models for Group POI Recommendations

Jing Long, Liang Qu, Junliang Yu +3

The rapid proliferation of Location-Based Social Networks (LBSNs) has underscored the importance of Point-of-Interest (POI) recommendation systems in enhancing user experiences. Wh…

cs.IR2024★ 2 cited

On-device Content-based Recommendation with Single-shot Embedding Pruning: A Cooperative Game Perspective

Hung Vinh Tran, Tong Chen, Guanhua Ye +3

Content-based Recommender Systems (CRSs) play a crucial role in shaping user experiences in e-commerce, online advertising, and personalized recommendations. However, due to the va…

cs.IR2024

FELLAS: Enhancing Federated Sequential Recommendation with LLM as External Services

Wei Yuan, Chaoqun Yang, Guanhua Ye +3

Federated sequential recommendation (FedSeqRec) has gained growing attention due to its ability to protect user privacy. Unfortunately, the performance of FedSeqRec is still unsati…

cs.IR2024★ 1 cited

PTF-FSR: A Parameter Transmission-Free Federated Sequential Recommender System

Wei Yuan, Chaoqun Yang, Liang Qu +3

Sequential recommender systems have made significant progress. Recently, due to increasing concerns about user data privacy, some researchers have implemented federated learning fo…