activity
20232026
most citedModel Merging in LLMs, MLLMs, and Beyond: Methods, Theories, Applications and Opportunities

7 citations · 20 across the 34 of their papers we have counts for

collaborators

36 papers

cs.IR2026

Preference-Drift-Aware Subsequence Learning and Hierarchical Context Fusion for Long-Sequence Generative Recommendation

Fei Li, Qingyun Gao, Jianzhe Zhao +5

Long-sequence generative recommendation methods autoregressively model the user's interaction sequence to generate the next-item representation. Existing methods generally fall int…

cs.CL2026

Learning Preference Adaptation for Large Language Model Personalization via Verbal Reinforcement Learning

Yuting Liu, Wei Wu, Jianzhe Zhao +1

Natural language user preferences provide an interpretable interface for LLM personalization. However, universal preference summaries often contain information irrelevant to a part…

cs.IR2026

PCTD: Preference-Guided Counterfactual Task Decomposition for Agent Tool Retrieval

Chu Zhao, Lei Tang, Minghang Li +5

Task decomposition aims to transform ambiguous instructions into executable atomic subtasks, thereby guiding high-precision tool retrieval. However, our analysis reveals that direc…

cs.LG2026

Enhancing Protein Representation Learning via Manifold Restore Mixing

Yizhou Dang, Chuang Zhao, Lianbo Ma +3

Data augmentation (DA) has been proven to be an effective means for improving protein representation learning (PRL) by generating additional training samples. Although mainstream p…

cs.IR2026

Pay Attention to Sequence Split: Uncovering the Impacts of Sub-Sequence Splitting on Sequential Recommendation Models

Yizhou Dang, Yifan Wu, Minhan Huang +5

Sub-sequence splitting (SSS) has been demonstrated as an effective approach to mitigate data sparsity in sequential recommendation (SR) by splitting a raw user interaction sequence…

cs.IR2026

Fusion and Alignment Enhancement with Large Language Models for Tail-item Sequential Recommendation

Zhifu Wei, Yizhou Dang, Guibing Guo +2

Sequential Recommendation (SR) learns user preferences from their historical interaction sequences and provides personalized suggestions. In real-world scenarios, most items exhibi…

cs.IR2026

Causal Direct Preference Optimization for Distributionally Robust Generative Recommendation

Chu Zhao, Enneng Yang, Jianzhe Zhao +1

Direct Preference Optimization (DPO) guides large language models (LLMs) to generate recommendations aligned with user historical behavior distributions by minimizing preference al…

cs.LG2026

ECHO: Entropy-Confidence Hybrid Optimization for Test-Time Reinforcement Learning

Chu Zhao, Enneng Yang, Yuting Liu +2

Test-time reinforcement learning generates multiple candidate answers via repeated rollouts and performs online updates using pseudo-labels constructed by majority voting. To reduc…

cs.IR2026

Tail-Aware Data Augmentation for Long-Tail Sequential Recommendation

Yizhou Dang, Zhifu Wei, Minhan Huang +4

Sequential recommendation (SR) learns user preferences based on their historical interaction sequences and provides personalized suggestions. In real-world scenarios, most users ca…

cs.CL2026

Text as a Universal Interface for Transferable Personalization

Yuting Liu, Jian Guan, Jia-Nan Li +4

We study the problem of personalization in large language models (LLMs). Prior work predominantly represents user preferences as implicit, model-specific vectors or parameters, yie…

cs.CV2025

MoFu: Scale-Aware Modulation and Fourier Fusion for Multi-Subject Video Generation

Run Ling, Ke Cao, Jian Lu +15

Multi-subject video generation aims to synthesize videos from textual prompts and multiple reference images, ensuring that each subject preserves natural scale and visual fidelity.…

cs.LG2025

FedLoRA-Optimizer: Federated LoRA Fine-Tuning with Global and Local Optimization in Heterogeneous Data Scenarios

Jianzhe Zhao, Hailin Zhu, Yu Zhang +2

Federated efficient fine-tuning has emerged as an approach that leverages distributed data and computational resources across nodes to address the challenges of large-scale fine-tu…

cs.LG2025

Causal Negative Sampling via Diffusion Model for Out-of-Distribution Recommendation

Chu Zhao, Eneng Yang, Yizhou Dang +3

Heuristic negative sampling enhances recommendation performance by selecting negative samples of varying hardness levels from predefined candidate pools to guide the model toward l…

cs.IR2025

RAGAR: Retrieval Augmented Personalized Image Generation Guided by Recommendation

Run Ling, Wenji Wang, Yuting Liu +12

Personalized image generation is crucial for improving the user experience, as it renders reference images into preferred ones according to user visual preferences. Although effect…

cs.IR2025

Data Augmentation as Free Lunch: Exploring the Test-Time Augmentation for Sequential Recommendation

Yizhou Dang, Yuting Liu, Enneng Yang +4

Data augmentation has become a promising method of mitigating data sparsity in sequential recommendation. Existing methods generate new yet effective data during model training to…

cs.IR2025

Hard Negative Sampling via Large Language Models for Recommendation

Chu Zhao, Enneng Yang, Yuting Liu +2

Hard negative sampling improves recommendation performance by accelerating convergence and sharpening the decision boundary. However, most existing methods rely on heuristic strate…

cs.CL2025

Efficient and Effective Prompt Tuning via Prompt Decomposition and Compressed Outer Product

Pengxiang Lan, Haoyu Xu, Enneng Yang +4

Prompt tuning (PT) offers a cost-effective alternative to fine-tuning large-scale pre-trained language models (PLMs), requiring only a few parameters in soft prompt tokens added be…

cs.LG2025

Data Assetization via Resources-decoupled Federated Learning

Jianzhe Zhao, Feida Zhu, Lingyan He +4

With the development of the digital economy, data is increasingly recognized as an essential resource for both work and life. However, due to privacy concerns, data owners tend to…

cs.LG2025

Distributionally Robust Graph Out-of-Distribution Recommendation via Diffusion Model

Chu Zhao, Enneng Yang, Yuliang Liang +3

The distributionally robust optimization (DRO)-based graph neural network methods improve recommendation systems' out-of-distribution (OOD) generalization by optimizing the model's…

cs.IR2024

Augmenting Sequential Recommendation with Balanced Relevance and Diversity

Yizhou Dang, Jiahui Zhang, Yuting Liu +5

By generating new yet effective data, data augmentation has become a promising method to mitigate the data sparsity problem in sequential recommendation. Existing works focus on au…

cs.IR2024

Self-supervised Hierarchical Representation for Medication Recommendation

Yuliang Liang, Yuting Liu, Yizhou Dang +5

Medication recommender is to suggest appropriate medication combinations based on a patient's health history, e.g., diagnoses and procedures. Existing works represent different dia…

cs.LG2024

Efficient and Effective Weight-Ensembling Mixture of Experts for Multi-Task Model Merging

Li Shen, Anke Tang, Enneng Yang +6

Multi-task learning (MTL) leverages a shared model to accomplish multiple tasks and facilitate knowledge transfer. Recent research on task arithmetic-based MTL demonstrates that me…

cs.LG2024

SurgeryV2: Bridging the Gap Between Model Merging and Multi-Task Learning with Deep Representation Surgery

Enneng Yang, Li Shen, Zhenyi Wang +5

Model merging-based multitask learning (MTL) offers a promising approach for performing MTL by merging multiple expert models without requiring access to raw training data. However…

cs.IR2024

Data Augmentation for Sequential Recommendation: A Survey

Yizhou Dang, Enneng Yang, Yuting Liu +4

As an essential branch of recommender systems, sequential recommendation (SR) has received much attention due to its well-consistency with real-world situations. However, the wides…