WWW / The Web Conference

Tail-Aware Data Augmentation for Long-Tail Sequential Recommendation

关注尾部的数据增强用于长尾序列推荐

Yizhou Dang, Zhifu Wei, Minhan Huang, Lianbo Ma, Jianzhe Zhao, Guibing Guo, Xingwei Wang

AI总结 TADA通过增强尾部物品交互频率并保持头部性能，提升长尾序列推荐模型的学习能力。

Comments Accepted by WWW 2026

We Need a More Robust Classifier: Dual Causal Learning Empowers Domain-Incremental Time Series Classification

我们需要一个更稳健的分类器：双因果学习赋能领域增量时间序列分类

Zhipeng Liu, Peibo Duan, Xuan Tang, Haodong Jing, Mingyang Geng, Yongsheng Huang, Jialu Xu, Bin Zhang, Binwu Wang

机构 * School of Software, Northeastern University（东北大学软件学院） ； Institute of Artificial Intelligence and Robotics, Xi'an Jiaotong University（西安交通大学人工智能与机器人研究所） ； College of Computer Science and Technology, National University of Defense Technology（国防科技大学计算机科学与技术学院） ； School of Software, University of Science and Technology of China（中国科学技术大学软件学院） 纠错

AI总结 本文提出双因果学习框架DualCD，通过解耦因果特征与虚假特征，提升领域增量时间序列分类的鲁棒性。

Comments This paper has been accepted for publication at ACM WWW 2026

STCRank: Spatio-temporal Collaborative Ranking for Interactive Recommender System at Kuaishou E-shop

STCRank: 时空协同排序用于快手电商互动推荐系统

Boyang Xia, Ruilin Bao, Hanjun Jiang, Jun Wang, Wenwu Ou

AI总结 STCRank通过时空协同排序解决快手电商互动推荐系统中多目标协作与多槽协作问题，提升推荐效果与用户参与度。

Comments Accepted as an oral paper by WWW26 Human-centered recommender systems (HCRS) workshop (https://hcrec.github.io/)

COINS: SemantiC Ids Enhanced COLd Item RepresentatioN for Click-through Rate Prediction in E-commerce Search

COINS: 语义ID增强的冷启动物品表示法用于电商搜索点击率预测

Qihang Zhao, Zhongbo Sun, Xiaoyang Zheng, Xian Guo, Siyuan Wang, Zihan Liang, Mingcan Peng, Ben Chen, Chenyi Lei

机构 * Kuaishou Inc.（快手公司） 纠错

AI总结 COINS通过融合语义ID的协同信息与内容信息，提升冷启动物品的点击率预测精度，实现电商搜索的多样性与推荐效果的双重提升。

Comments Accepted by WWW26

When to Invoke: Refining LLM Fairness with Toxicity Assessment

何时触发：通过毒性评估提升LLM公平性

Jing Ren, Bowen Li, Ziqi Xu, Renqiang Luo, Shuo Yu, Xin Ye, Haytham Fayek, Xiaodong Li, Feng Xia

机构 * RMIT University（拉筹纳斯大学） ； Jilin University（吉林大学） ； Dalian University of Technology（大连理工大学） 纠错

AI总结 FairToT通过推理时的提示引导毒性评估，提升LLM在不同群体间的公平性，减少群体差异并保持预测稳定性。

Comments Accepted by Findings of WWW 2026

Understanding the Consequences of VTuber Reincarnation

理解VTuber转世的后果

Yiluo Wei, Gareth Tyson

AI总结 研究分析VTuber转世现象对职业和行业的影响，揭示其对Nakanohito、公司及观众的负面影响，并提出可持续发展的建议。

Comments Accepted to The ACM Web Conference 2026 (WWW '26), Web4Good Track

Grad: Guided Relation Diffusion Generation for Graph Augmentation in Graph Fraud Detection

Grad: 图神经网络在图欺诈检测中的引导关系扩散生成用于图增强

Jie Yang, Rui Zhang, Ziyang Cheng, Dawei Cheng, Guang Yang, Bo Wang

机构 * Tongji University Shanghai China ； The University of New South Wales Sydney Australia ； Tongji University \& Shanghai Artificial Intelligence Laboratory Shanghai China ； Wechat Pay, Tencent Inc. Shenzhen China ； Tongji University ； The University of New South Wales ； Tongji University \& Shanghai Artificial Intelligence Laboratory ； Wechat Pay, Tencent Inc. 纠错

AI总结 Grad通过引导关系扩散生成和监督图对比学习，提升图欺诈检测中欺诈与良性用户差异，有效识别隐藏欺诈信号。

Comments Accepted by The Web Conference 2025 (WWW'25). 12 pages, includes implementation details. Code: https://github.com/AI4Risk/antifraud and https://github.com/Muyiiiiii/WWW25-Grad

Journal ref Proceedings of the ACM Web Conference 2025 (WWW '25), April 28-May 2, 2025, Sydney, NSW, Australia

Warmer for Less: A Cost-Efficient Strategy for Cold-Start Recommendations at Pinterest

更少的代价：Pinterest冷启动推荐的高效策略

Saeed Ebrahimi, Weijie Jiang, Jaewon Yang, Olafur Gudmundsson, Yucheng Tu, Huizhong Duan

机构 * Pinterest 纠错

AI总结 Pinterest提出了一种高效策略，通过轻量级模型、残差连接、分数正则化和流形混合技术，提升冷启动推荐效果，使新鲜内容参与度提升10%。

Comments Submitted to the WWW'26

Leveraging heterogeneous spillover in maximizing contextual bandit rewards

利用异质溢出效应以最大化上下文老虎机奖励

Ahmed Sayeed Faruk, Elena Zheleva

机构 * University of Illinois Chicago（伊利诺伊大学芝加哥分校） 纠错

AI总结 本文提出一种考虑异质溢出效应的上下文老虎机框架，通过引入邻居行为和网络结构信息提升推荐奖励。

Journal ref Proceedings of the ACM Web Conference 2025 (WWW 25), April 28- May 2, 2025, Sydney, Australia, pp. 3049-3060

GraphCompliance: Aligning Policy and Context Graphs for LLM-Based Regulatory Compliance

Jiseong Chung, Ronny Ko, Wonchul Yoo, Makoto Onizuka, Sungmok Kim, Tae-Wan Kim, Won-Yong Shin

机构 * Seoul National University（首尔国立大学） ； Osaka University（大阪大学） ； Yonsei University（延世大学） 纠错

Comments Under review at The Web Conference 2026 (Semantics & Knowledge track). Code will be released upon acceptance. This arXiv v1 contains no repository links to preserve double-blind review

Traceback of Poisoning Attacks to Retrieval-Augmented Generation

Baolei Zhang, Haoran Xin, Minghong Fang, Zhuqing Liu, Biao Yi, Tong Li, Zheli Liu

机构 * CCS\&CS, DISSec, Nankai University（计算机科学与技术系、信息安全与保密系、南开大学） ； University of Louisville（路易斯维尔大学） ； University of North Texas（北德克萨斯大学） 纠错

Comments Accepted by The Web Conference 2025

Does Weighting Improve Matrix Factorization for Recommender Systems?

Alex Ayoub, Samuel Robertson, Dawen Liang, Harald Steck, Nathan Kallus

机构 * University of Alberta Edmonton, AB Canada ； Netflix, Inc. Los Gatos, CA USA ； Netflix, Inc. \& Cornell University New York, NY USA ； University of Alberta ； Netflix, Inc. ； Netflix, Inc. \& Cornell University 纠错

Comments In the proceedings of the Web Conference (WWW) 2025 (11 pages)

Generative Dynamic Graph Representation Learning for Conspiracy Spoofing Detection

Sheng Xiang, Yidong Jiang, Yunting Chen, Dawei Cheng, Guoping Zhao, Changjun Jiang

机构 * Tongji University Shanghai China ； University of Technology Sydney Sydney NSW Australia ； Tongji University \& Shanghai Artificial Intelligence Laboratory Shanghai China ； China Futures Market Monitoring Center Beijing China ； Tongji University ； University of Technology Sydney ； Tongji University \& Shanghai Artificial Intelligence Laboratory ； China Futures Market Monitoring Center 纠错

Comments 10 pages, 5 figures, ACM the web conference 2025

MER-Inspector: Assessing model extraction risks from an attack-agnostic perspective

Xinwei Zhang, Haibo Hu, Qingqing Ye, Li Bai, Huadi Zheng

Comments Published in ACM WWW 2025

HRFT: Mining High-Frequency Risk Factor Collections End-to-End via Transformer

Wenyan Xu, Rundong Wang, Chen Li, Yonghong Hu, Zhonghua Lu

Comments Accepted at WWW 25 Industrial Track

MDEval: Evaluating and Enhancing Markdown Awareness in Large Language Models

Zhongpu Chen, Yinfeng Liu, Long Shi, Xingyan Chen, Yu Zhao, Fuji Ren

机构 * Southwestern University of Finance and Economics（西南财经大学） ； University of Electronic Science and Technology of China（电子科技大学） 纠错

Comments WWW 2025

Nash Convergence of Mean-Based Learning Algorithms in First-Price Auctions

Xiaotie Deng, Xinyan Hu, Tao Lin, Weiqiang Zheng

机构 * Center on Frontiers of Computing Studies, Peking University（前沿计算研究中心，北京大学） ； Department of Electrical Engineering and Computer Sciences, University of California, Berkeley（电气工程与计算机科学系，加州大学伯克利分校） ； School of Engineering and Applied Sciences, Harvard University（工程与应用科学系，哈佛大学） ； Department of Computer Science, Yale University（计算机科学系，耶鲁大学） 纠错

Comments A preliminary version was published at the Web Conference (WWW) 2022. This version updates references and figures

Epidemiology-informed Network for Robust Rumor Detection

Wei Jiang, Tong Chen, Xinyi Gao, Wentao Zhang, Lizhen Cui, Hongzhi Yin

Comments Accepted by The Web Conference 2025 (WWW2025)

SQLord: A Robust Enterprise Text-to-SQL Solution via Reverse Data Generation and Workflow Decomposition

Song Cheng, Qiannan Cheng, Linbo Jin, Lei Yi, Guannan Zhang

机构 * Alibaba Group（阿里巴巴集团） 纠错

Comments WWW '25: Companion Proceedings of the ACM on Web Conference 2025 Pages 919 - 923 https://doi.org/10.1145/3701716.3715541

Journal ref WWW '25: Companion Proceedings of the ACM on Web Conference 2025

External Large Foundation Model: How to Efficiently Serve Trillions of Parameters for Online Ads Recommendation

Mingfu Liang, Xi Liu, Rong Jin, Boyang Liu, Qiuling Suo, Qinghai Zhou, Song Zhou, Laming Chen, Hua Zheng, Zhiyuan Li, Shali Jiang, Jiyan Yang, Xiaozhen Xia, Fan Yang, Yasmine Badr, Ellie Wen, Shuyu Xu, Hansey Chen, Zhengyu Zhang, Jade Nie, Chunzhi Yang, Zhichen Zeng, Weilin Zhang, Xingliang Huang, Qianru Li, Shiquan Wang, Evelyn Lyu, Wenjing Lu, Rui Zhang, Wenjun Wang, Jason Rudy, Mengyue Hang, Kai Wang, Yinbin Ma, Shuaiwen Wang, Sihan Zeng, Tongyi Tang, Xiaohan Wei, Longhao Jin, Jamey Zhang, Marcus Chen, Jiayi Xu, Angie Huang, Xihuan Zeng, Chi Zhang, Zhengli Zhao, Jared Yang, Qiang Jin, Xian Chen, Amit Anand Amlesahwaram, Lexi Song, Liang Luo, Yuchen Hao, Nan Xiao, Yavuz Yetim, Luoshang Pan, Gaoxiang Liu, Yuxi Hu, Yuzhen Huang, Jackie Xu, Rich Zhu, Xin Zhang, Yiqun Liu, Hang Yin, Yuxin Chen, Buyun Zhang, Xiaoyi Liu, Xingyuan Wang, Wenguang Mao, Zhijing Li, Zhehui Zhou, Feifan Gu, Qin Huang, Chonglin Sun, Nancy Yu, Shuo Gu, Shupin Mao, Benjamin Au, Jingzheng Qin, Peggy Yao, Jae-Woo Choi, Bin Gao, Ernest Wang, Lei Zhang, Wen-Yen Chen, Ted Lee, Yujie Zha, Yi Meng, Alex Gong, Edison Gao, Jack Hsueh, Jie Zheng, Alireza Vahdatpour, Yiping Han, Yantao Yao, Toshinari Kureha, Shuo Chang, Musharaf Sultan, John Bocharov, Sagar Chordia, Xiaorui Gan, Peng Sun, Rocky Liu, Bo Long, Wenlin Chen, Santanu Kolay, Huayu Li

机构 * AI at Meta（Meta人工智能） 纠错

Comments Accepted by the ACM Web Conference (WWW) 2025 Industrial Track as Oral Presentation

Generative Retrieval and Alignment Model: A New Paradigm for E-commerce Retrieval

Ming Pang, Chunyuan Yuan, Xiaoyu He, Zheng Fang, Donghao Xie, Fanyi Qu, Xue Jiang, Changping Peng, Zhangang Lin, Ching Law, Jingping Shao

Comments Accepted by WWW2025

Str-GCL: Structural Commonsense Driven Graph Contrastive Learning

Dongxiao He, Yongqi Huang, Jitao Zhao, Xiaobao Wang, Zhen Wang

机构 * College of Intelligence and Computing（智能与计算学院） ； Tianjin University（天津大学） ； Northwestern Polytechnical University（西北工业大学） 纠错

Comments Accepted by WWW 2025

Journal ref Proceedings of the ACM on Web Conference 2025, 1129-1141

Towards Collaborative Anti-Money Laundering Among Financial Institutions

Zhihua Tian, Yuan Ding, Wenjie Qu, Xiang Yu, Enchao Gong, Jian Liu, Kui Ren

机构 * Zhejiang University（浙江大学） ； National University of Singapore（新加坡国立大学） ； Alibaba Group（阿里巴巴集团） 纠错

Comments Accepted by International World Wide Web Conference (WWW) 2025

Before & After: The Effect of EU's 2022 Code of Practice on Disinformation

Emmanouil Papadogiannakis, Panagiotis Papadopoulos, Nicolas Kourtellis, Evangelos P. Markatos

Comments WWW '25: Proceedings of the ACM on Web Conference 2025

HSF: Defending against Jailbreak Attacks with Hidden State Filtering

Cheng Qian, Hainan Zhang, Lei Sha, Zhiming Zheng

机构 * School of AI, Beihang University（北京航空航天大学人工智能学院） ； Beijing Advanced Innovation Center（北京先进创新中心） 纠错

Comments WWW2025 WSAI BESTPAPER

PerSRV: Personalized Sticker Retrieval with Vision-Language Model

Heng Er Metilda Chee, Jiayin Wang, Zhiqiang Guo, Weizhi Ma, Min Zhang

Comments Accepted at WWW '25

Disentangling Likes and Dislikes in Personalized Generative Explainable Recommendation

Ryotaro Shimizu, Takashi Wada, Yu Wang, Johannes Kruse, Sean O'Brien, Sai HtaungKham, Linxin Song, Yuya Yoshikawa, Yuki Saito, Fugee Tsung, Masayuki Goto, Julian McAuley

机构 * University of California San Diego（加州大学圣地亚哥分校） ； ZOZO Research（ZOZO研究） ； Waseda University（早稻田大学） ； University of Southern California（南加州大学） ； Chiba Institute of Technology（千叶科学技术大学） ； The Hong Kong University of Science and Technology（香港科技大学） 纠错

Comments This manuscript has been accepted for presentation at The Web Conference (WWW) 2025

iAgent: LLM Agent as a Shield between User and Recommender Systems

Wujiang Xu, Yunxiao Shi, Zujie Liang, Xuying Ning, Kai Mei, Kun Wang, Xi Zhu, Min Xu, Yongfeng Zhang

机构 * Rutgers University（罗格斯大学） ； University of Technology Sydney（悉尼技术大学） ； University of Illinois Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校） ； Nanyang Technological University（南洋理工大学） 纠错

Comments Findings of ACL 2025 and WWW2025@HCRS

Graph Wave Networks

Juwei Yue, Haikuo Li, Jiawei Sheng, Yihan Guo, Xinghua Zhang, Chuan Zhou, Tingwen Liu, Li Guo

机构 * Institute of Information Engineering, Chinese Academy of Sciences（信息工程研究所，中国科学院） ； School of Cyber Security, UCAS（网络安全学院，UCAS） ； Tongyi Lab, Alibaba Group（通义实验室，阿里巴巴集团） ； Academy of Mathematics and Systems Science, Chinese Academy of Sciences（数学系统科学学院，中国科学院） 纠错

Comments 15 pages, 8 figures, published to WWW 2025

Journal ref The ACM Web Conference 2025

Middleman Bias in Advertising: Aligning Relevance of Keyphrase Recommendations with Search

Soumik Dey, Wei Zhang, Hansi Wu, Bingfeng Dong, Binbin Li

Journal ref WWW '25: Companion Proceedings of the ACM on Web Conference 2025