Search Results for author: Junfeng Wang

Found 12 papers, 3 papers with code

FltLM: An Intergrated Long-Context Large Language Model for Effective Context Filtering and Understanding

no code implementations9 Oct 2024 Jingyang Deng, Zhengyang Shen, Boyang Wang, Lixin Su, Suqi Cheng, Ying Nie, Junfeng Wang, Dawei Yin, Jinwen Ma

The development of Long-Context Large Language Models (LLMs) has markedly advanced natural language processing by facilitating the process of textual data across long documents and multiple corpora.

Language Modelling Large Language Model +2

DaRec: A Disentangled Alignment Framework for Large Language Model and Recommender System

no code implementations15 Aug 2024 Xihong Yang, Heming Jing, Zixing Zhang, Jindong Wang, Huakang Niu, Shuaiqiang Wang, Yu Lu, Junfeng Wang, Dawei Yin, Xinwang Liu, En Zhu, Defu Lian, Erxue Min

In this work, we prove that directly aligning the representations of LLMs and collaborative models is sub-optimal for enhancing downstream recommendation tasks performance, based on the information theorem.

Contrastive Learning Language Modelling +3

GOVERN: Gradient Orientation Vote Ensemble for Multi-Teacher Reinforced Distillation

no code implementations6 May 2024 Wenjie Zhou, Zhenxin Ding, Xiaodong Zhang, Haibo Shi, Junfeng Wang, Dawei Yin

Pre-trained language models have become an integral component of question-answering systems, achieving remarkable performance.

Knowledge Distillation Question Answering

Text-Video Retrieval via Variational Multi-Modal Hypergraph Networks

no code implementations6 Jan 2024 Qian Li, Lixin Su, Jiashu Zhao, Long Xia, Hengyi Cai, Suqi Cheng, Hengzhu Tang, Junfeng Wang, Dawei Yin

Compared to conventional textual retrieval, the main obstacle for text-video retrieval is the semantic gap between the textual nature of queries and the visual richness of video content.

Retrieval Variational Inference +1

Agent4Ranking: Semantic Robust Ranking via Personalized Query Rewriting Using Multi-agent LLM

no code implementations24 Dec 2023 Xiaopeng Li, Lixin Su, Pengyue Jia, Xiangyu Zhao, Suqi Cheng, Junfeng Wang, Dawei Yin

To be specific, we use Chain of Thought (CoT) technology to utilize Large Language Models (LLMs) as agents to emulate various demographic profiles, then use them for efficient query rewriting, and we innovate a robust Multi-gate Mixture of Experts (MMoE) architecture coupled with a hybrid loss function, collectively strengthening the ranking models' robustness.

LLMRec: Large Language Models with Graph Augmentation for Recommendation

1 code implementation1 Nov 2023 Wei Wei, Xubin Ren, Jiabin Tang, Qinyong Wang, Lixin Su, Suqi Cheng, Junfeng Wang, Dawei Yin, Chao Huang

By employing these strategies, we address the challenges posed by sparse implicit feedback and low-quality side information in recommenders.

Model Optimization Recommendation Systems

Representation Learning with Large Language Models for Recommendation

1 code implementation24 Oct 2023 Xubin Ren, Wei Wei, Lianghao Xia, Lixin Su, Suqi Cheng, Junfeng Wang, Dawei Yin, Chao Huang

RLMRec incorporates auxiliary textual signals, develops a user/item profiling paradigm empowered by LLMs, and aligns the semantic space of LLMs with the representation space of collaborative relational signals through a cross-view alignment framework.

Recommendation Systems Representation Learning

A stochastic block model for community detection in attributed networks

no code implementations31 Aug 2023 Xiao Wang, Fang Dai, Wenyan Guo, Junfeng Wang

Therefore, a stochastic block model that integrates betweenness centrality and clustering coefficient of nodes for community detection in attributed networks, named BCSBM, is proposed in this paper.

Clustering Community Detection +1

Iterative Self-consistent Parallel Magnetic Resonance Imaging Reconstruction based on Nonlocal Low-Rank Regularization

no code implementations10 Aug 2021 Ting Pan, Jizhong Duan, Junfeng Wang, Yu Liu

Recent methods have exploited the nonlocal self-similarity (NSS) of images by imposing nonlocal low-rankness of similar patches to achieve a superior performance.

Spatially resolved BPT mapping of nearby Seyfert 2 galaxies

no code implementations4 Sep 2020 Jingzhe Ma, W. Peter Maksym, G. Fabbiano, Martin Elvis, Thaisa Storchi-Bergmann, Margarita Karovska, Junfeng Wang, Andrea Travascio

The Seyfert nucleus and ionization cones transition to and are surrounded by a LINER cocoon, extending up to $\sim$ 250 pc in thickness.

Astrophysics of Galaxies

Cannot find the paper you are looking for? You can Submit a new open access paper.