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Large Language Models (LLMs) have emerged as a new paradigm for recommendation by converting interacted item history into language modeling. However, constrained by the limited context length of LLMs, existing approaches have to truncate…

信息检索 · 计算机科学 2025-05-20 Jiayi Liao , Ruobing Xie , Sihang Li , Xiang Wang , Xingwu Sun , Zhanhui Kang , Xiangnan He

To augment Large Language Models (LLMs) for multi-hop question answering, a mainstream solution within Graph Retrieval Augmented Generation (GraphRAG) leverages lightweight retrievers to efficiently extract information from a given…

信息检索 · 计算机科学 2026-05-20 Shuai Li , Chen Huang , Duanyu Feng , Wenqiang Lei , See-Kiong Ng

Large Language Models (LLMs) face the "knowledge cutoff" challenge, where their frozen parametric memory prevents direct internalization of new information. While Supervised Fine-Tuning (SFT) is commonly used to update model knowledge, it…

机器学习 · 计算机科学 2026-05-12 Pingzhi Tang , Yiding Wang , Muhan Zhang

Long-tailed multi-label visual recognition (LTML) task is a highly challenging task due to the label co-occurrence and imbalanced data distribution. In this work, we propose a unified framework for LTML, namely prompt tuning with…

计算机视觉与模式识别 · 计算机科学 2024-06-19 Peng Xia , Di Xu , Ming Hu , Lie Ju , Zongyuan Ge

Long-tailed data distributions pose challenges for a variety of domains like e-commerce, finance, biomedical science, and cyber security, where the performance of machine learning models is often dominated by head categories while tail…

机器学习 · 计算机科学 2024-10-31 Haohui Wang , Weijie Guan , Jianpeng Chen , Zi Wang , Dawei Zhou

The growth of Massive Open Online Courses (MOOCs) presents significant challenges for personalized learning, where concept recommendation is crucial. Existing approaches typically rely on heterogeneous information networks or knowledge…

信息检索 · 计算机科学 2025-11-27 Xiangrui Xiong , Yichuan Lu , Zifei Pan , Chang Sun

Cross-domain recommendation (CDR) is crucial for improving recommendation accuracy and generalization, yet traditional methods are often hindered by the reliance on shared user/item IDs, which are unavailable in most real-world scenarios.…

信息检索 · 计算机科学 2025-11-18 Peiyu Hu , Wayne Lu , Jia Wang

Traditional recommender systems (RS) have been primarily optimized for accuracy and short-term engagement, often overlooking transparency and trustworthiness. Recently, platforms such as Amazon and Instagram have begun providing…

Sequential Recommendation (SR) aims to predict the next interaction of a user based on their behavior sequence, where complementary relations often provide essential signals for predicting the next item. However, mainstream models relying…

信息检索 · 计算机科学 2026-04-22 Qian Zhang , Lech Szymanski , Haibo Zhang , Jeremiah D. Deng

In an era of information explosion, recommendation systems play an important role in people's daily life by facilitating content exploration. It is known that user activeness, i.e., number of behaviors, tends to follow a long-tail…

信息检索 · 计算机科学 2022-08-22 Zheqi Lv , Feng Wang , Shengyu Zhang , Kun Kuang , Hongxia Yang , Fei Wu

Large Language Models (LLMs) are widely applied in real world scenarios, yet fine-tuning them comes with significant computational and storage costs. Parameter-Efficient Fine-Tuning (PEFT) methods such as LoRA mitigate these costs; however,…

计算与语言 · 计算机科学 2026-05-15 Chanjoo Jung , Jaehyung Kim

Constructing domain-specific knowledge graphs from unstructured text remains challenging due to heterogeneous entity mentions, long-tail relation distributions, and the absence of standardized schemas. We present LEC-KG, a bidirectional…

计算与语言 · 计算机科学 2026-03-02 Yikai Zeng , Yingchao Piao , Changhua Pei , Jianhui Li

Large Language Models (LLMs) have shown strong performance in automated source-to-target code translation through pretraining on extensive code corpora. However, mainstream LLM-based code translation methods suffer from two critical…

软件工程 · 计算机科学 2025-10-13 He Jiang , Yufu Wang , Hao Lin , Peiyu Zou , Zhide Zhou , Ang Jia , Xiaochen Li , Zhilei Ren

Retrieval-augmented generation (RAG) utilizes retrieved texts to enhance large language models (LLMs). Studies show that while RAG provides valuable external information (benefit), it may also mislead LLMs (detriment) with noisy or…

计算与语言 · 计算机科学 2025-03-03 Shicheng Xu , Liang Pang , Huawei Shen , Xueqi Cheng

In recent years, the recommendation content on e-commerce platforms has become increasingly rich -- a single user feed may contain multiple entities, such as selling products, short videos, and content posts. To deal with the multi-entity…

信息检索 · 计算机科学 2024-11-26 Jianyu Guan , Zongming Yin , Tianyi Zhang , Leihui Chen , Yin Zhang , Fei Huang , Jufeng Chen , Shuguang Han

With the development of multimedia systems, multimodal recommendations are playing an essential role, as they can leverage rich contexts beyond interactions. Existing methods mainly regard multimodal information as an auxiliary, using them…

信息检索 · 计算机科学 2024-08-02 Yifan Liu , Kangning Zhang , Xiangyuan Ren , Yanhua Huang , Jiarui Jin , Yingjie Qin , Ruilong Su , Ruiwen Xu , Yong Yu , Weinan Zhang

Sequential recommendation aims to predict users' future interactions by modeling collaborative filtering (CF) signals from historical behaviors of similar users or items. Traditional sequential recommenders predominantly rely on ID-based…

信息检索 · 计算机科学 2025-06-30 Yingzhi He , Xiaohao Liu , An Zhang , Yunshan Ma , Tat-Seng Chua

Pre-trained language models (PLMs) demonstrate remarkable intelligence but struggle with emerging tasks unseen during training in real-world applications. Training separate models for each new task is usually impractical. Multi-task…

计算与语言 · 计算机科学 2025-05-02 Xiao Zhang , Kangsheng Wang , Tianyu Hu , Huimin Ma

Class imbalance has been extensively studied in single-view scenarios; however, addressing this challenge in multi-view contexts remains an open problem, with even scarcer research focusing on trustworthy solutions. In this paper, we tackle…

机器学习 · 计算机科学 2025-11-13 Chuanqing Tang , Yifei Shi , Guanghao Lin , Lei Xing , Long Shi

Large Language Models (LLMs) have demonstrated strong potential for generative recommendation by leveraging rich semantic knowledge. However, existing LLM-based recommender systems struggle to effectively incorporate collaborative filtering…

信息检索 · 计算机科学 2026-01-27 Fake Lin , Binbin Hu , Zhi Zheng , Xi Zhu , Ziqi Liu , Zhiqiang Zhang , Jun Zhou , Tong Xu