Pengpeng Zhao

2026

doi dblp
Towards Practical LLM Unlearning: Efficient, Modular, and Retain-Free.
Peng Liu|Peng-Fei Zhang|Jianfeng Qu|Ximing Li|Zhixu Li|Pengpeng Zhao
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2025

doi dblp
Stamp: Semantic-Aware Sub-trajectory Anomaly Detection with Diffusion Multi-model Pool for Evolving Data Streams.
Biao Chen|Junhua Fang|Pingfu Chao|An Liu|Pengpeng Zhao|Lei Zhao
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025

2024

doi dblp
Safety: A spatial and feature mixed outlier detection method for big trajectory data.
Yang Wu|Junhua Fang|Wei Chen|Pengpeng Zhao|Lei Zhao
Information Processing and Management 2024 Volume 61 Issue 2
doi dblp
A General Strategy Graph Collaborative Filtering for Recommendation Unlearning.
Yongjing Hao|Fuzhen Zhuang|Deqing Wang|Guanfeng Liu|Victor S. Sheng|Pengpeng Zhao
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024
doi dblp
Intent Contrastive Learning with Cross Subsequences for Sequential Recommendation.
Xiuyuan Qin|Huanhuan Yuan|Pengpeng Zhao|Guanfeng Liu|Fuzhen Zhuang|Victor S. Sheng
Proceedings of the 17th ACM International Conference on Web Search and Data Mining, WSDM 2024, Merida, Mexico, March 4-8, 2024

2023

doi dblp
Quaternion-based graph convolution network for recommendation.
Yaxing Fang|Pengpeng Zhao|Guanfeng Liu|Yanchi Liu|Victor S. Sheng|Lei Zhao|Xiaofang Zhou
World Wide Web (WWW) 2023 Volume 26 Issue 5
doi dblp
Click is not equal to purchase: multi-task reinforcement learning for multi-behavior recommendation.
Huiwang Zhang|Pengpeng Zhao|Xuefeng Xian|Victor S. Sheng|Yongjing Hao|Zhiming Cui
World Wide Web (WWW) 2023 Volume 26 Issue 6
doi dblp
Frequency Enhanced Hybrid Attention Network for Sequential Recommendation.
Xinyu Du|Huanhuan Yuan|Pengpeng Zhao|Jianfeng Qu|Fuzhen Zhuang|Guanfeng Liu|Yanchi Liu|Victor S. Sheng
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023
doi dblp
Ensemble Modeling with Contrastive Knowledge Distillation for Sequential Recommendation.
Hanwen Du|Huanhuan Yuan|Pengpeng Zhao|Fuzhen Zhuang|Guanfeng Liu|Lei Zhao|Yanchi Liu|Victor S. Sheng
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023
doi dblp
Meta-optimized Contrastive Learning for Sequential Recommendation.
Xiuyuan Qin|Huanhuan Yuan|Pengpeng Zhao|Junhua Fang|Fuzhen Zhuang|Guanfeng Liu|Yanchi Liu|Victor S. Sheng
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023

2022

doi dblp
Contrastive Learning with Bidirectional Transformers for Sequential Recommendation.
Hanwen Du|Hui Shi|Pengpeng Zhao|Deqing Wang|Victor S. Sheng|Yanchi Liu|Guanfeng Liu|Lei Zhao
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
doi dblp
Aries: Accurate Metric-based Representation Learning for Fast Top-k Trajectory Similarity Query.
Chunhui Feng|Zhicheng Pan|Junhua Fang|Jiajie Xu|Pengpeng Zhao|Lei Zhao
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

2021

doi dblp
Handling conditional queries and data storage on Hyperledger Fabric efficiently.
Tianlu Yan|Wei Chen|Pengpeng Zhao|Zhixu Li|An Liu|Lei Zhao
World Wide Web (WWW) 2021 Volume 24 Issue 1
doi dblp
On prediction of traffic flows in smart cities: a multitask deep learning based approach.
Fucheng Wang|Jiajie Xu|Chengfei Liu|Rui Zhou|Pengpeng Zhao
World Wide Web (WWW) 2021 Volume 24 Issue 3
doi dblp
When Hardness Makes a Difference: Multi-Hop Knowledge Graph Reasoning over Few-Shot Relations.
Shangfei Zheng|An Liu|Lei Wu|Zhiwei Li|Wei Chen|Junhua Fang|Lei Zhao|Mingjing Li|Pengpeng Zhao|An Liu|Lei Wu|Junhua Fang|Zhiwei Li|Lei Zhao|Mingjing Li
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

doi dblp
SGPM: a privacy protected approach of time-constrained graph pattern matching in cloud.
Jinjing Huang|Wei Chen|Zhixu Li|Pengpeng Zhao|Weiqing Wang|Hongzhi Yin|Lei Zhao
World Wide Web (WWW) 2020 Volume 23 Issue 1
doi dblp
A crowd-efficient learning approach for NER based on online encyclopedia.
Maolong Li|Zhixu Li|Qiang Yang|Zhigang Chen|Pengpeng Zhao|Lei Zhao
World Wide Web (WWW) 2020 Volume 23 Issue 1
doi dblp
Distributed and parallel processing for real-time and dynamic spatio-temporal graph.
Junhua Fang|Jiafeng Ding|Pengpeng Zhao|Jiajie Xu|An Liu|Zhixu Li
World Wide Web (WWW) 2020 Volume 23 Issue 2
doi dblp
Exploiting Aesthetic Preference in Deep Cross Networks for Cross-domain Recommendation.
Jian Liu|Pengpeng Zhao|Fuzhen Zhuang|Yanchi Liu|Victor S. Sheng|Jiajie Xu|Xiaofang Zhou|Hui Xiong
WWW '20: The Web Conference 2020, Taipei, Taiwan, April 20-24, 2020

2019

doi dblp
Recurrent Convolutional Neural Network for Sequential Recommendation.
Chengfeng Xu|Pengpeng Zhao|Yanchi Liu|Jiajie Xu|Victor S. Sheng|Zhiming Cui|Xiaofang Zhou|Hui Xiong
The World Wide Web Conference, WWW 2019, San Francisco, CA, USA, May 13-17, 2019

2018

doi dblp
Semantic-aware top-k spatial keyword queries.
Zhihu Qian|Jiajie Xu|Kai Zheng|Pengpeng Zhao|Xiaofang Zhou
World Wide Web (WWW) 2018 Volume 21 Issue 3
doi dblp
On Prediction of User Destination by Sub-Trajectory Understanding: A Deep Learning based Approach.
Jing Zhao|Jiajie Xu|Rui Zhou|Pengpeng Zhao|Chengfei Liu|Feng Zhu
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

2017

doi dblp
A feature based method for trajectory dataset segmentation and profiling.
Wei Jiang|Jie Zhu|Jiajie Xu|Zhixu Li|Pengpeng Zhao|Lei Zhao
World Wide Web (WWW) 2017 Volume 20 Issue 1
doi dblp
Monochromatic and bichromatic ranked reverse boolean spatial keyword nearest neighbors search.
Pengpeng Zhao|Hailin Fang|Victor S. Sheng|Zhixu Li|Jiajie Xu|Jian Wu|Zhiming Cui
World Wide Web (WWW) 2017 Volume 20 Issue 1
doi dblp
Location-aware publish/subscribe index with complex boolean expressions.
Pengpeng Zhao|Hanhan Jiang|Jiajie Xu|Victor S. Sheng|Guanfeng Liu|An Liu|Jian Wu|Zhiming Cui
World Wide Web (WWW) 2017 Volume 20 Issue 6

2015

doi dblp
Best First Over-Sampling for Multilabel Classification.
Xusheng Ai|Jian Wu|Victor S. Sheng|Yufeng Yao|Pengpeng Zhao|Zhiming Cui
Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015
doi dblp
Multi-Label Active Learning with Chi-Square Statistics for Image Classification.
Chen Ye|Jian Wu|Victor S. Sheng|Shiquan Zhao|Pengpeng Zhao|Zhiming Cui
Proceedings of the 5th ACM on International Conference on Multimedia Retrieval, Shanghai, China, June 23-26, 2015