About

Research Interests

• Storage System / Data Deduplication
• Distributed System
• Lossy Compression
• Key/Value Store

Education Experience

• B.Sc. in Mathematics from Shandong University(SDU), Jinan, Shandong, China
• M.Eng. in Software Engineering from University of Science and Technology of China(USTC), Hefei, Anhui, China
• Ph.D. student in Computer Science and Technology from Harbin Institute of Technology(HIT), Shenzhen, Guangdong, China

Publications

• 2025
1. Yufan Chen, Xiangyu Zou*, Kaiwen Deng, Hao Hu, Cai Deng, Ke Feng and Wen Xia, "Apic: A Precomputation-based Integer Compressor for OLTP Databases", in Proceedings of the 35th IEEE International Data Compression Conference (DCC'25, CCF-B). March 2025.
2. Hao Hu, Qiyang Zheng, Xiangyu Zou, Lisha Qin, Chengwei Zhang, Wanchuan Zhang, Zhaoheng Jiang, Dingwen Tao, Hongpeng Wang, and Wen Xia*, "A Cost-Effective and Decompression-Transparent Compressor for OLTP-Oriented Databases", in Proceedings of the 41st IEEE International Conference on Data Engineering (ICDE'25, CCF-A), Hong Kong, China, May 19-23, 2025.
3. Yanqi Pan, Wen Xia, Erci Xu, Xiangyu Zou, Hao Huang, "Don't Maintain Twice, It's Alright: Merged Metadata Management in Deduplication File System with GogetaFS", in Proceedings of the 23rd USENIX Conference on File and Storage Technologies (FAST'25, CCF-A), Santa Clara, CA, USA, February 25-27, 2025.
4. Dingbang Liu, Xiangyu Zou*, Tao Lu, Philip Shilane, Wen Xia, Wenxuan Huang, Yanqi Pan, Hao Huang, "Garbage Collection Does Not Only Collect Garbage: Piggybacking-Style Defragmentation for Deduplicated Backup Storage", in Proceedings of the 20th ACM European Conference on Computer Systems (EuroSys'25, CCF-A), Rotterdam, Netherlands, March 30 - April 3, 2025.
5. Xiangyu Zou, Wen Xia, Philip Shilane, Haijun Zhang and Xuan Wang, "The design of a high-performance fine-grained deduplication framework for backup storage", IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), 2025, in press.
6. Hao Huang, Yanqi Pan, Wen Xia, Xiangyu Zou, Darong Yang, Liang Shi, and Hongwei Du, "Simplifying and Accelerating NOR Flash I/O Stack for RAM-Restricted Microcontrollers", in Proceedings of the 30th ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS’25, CCF-A), Rotterdam, Netherlands, March 30–April 3, 2025.
7. Yanqi Pan, Wen Xia, Yifeng Zhang, Xiangyu Zou, Hao Huang, Zhenhua Li, Chentao Wu, "Fast and Synchronous Crash Consistency with Metadata Write-Once File System", in Proceedings of the 19th USENIX Symposium on Operating Systems Design and Implementation (OSDI’25, CCF-A), Boston, MA, USA, July 7-9, 2025.
8. Donglei Wu, Weihao Yang, Xiangyu Zou, Jinda Jia, Dingwen Tao, Wen Xia*, and Zhihong Tian, "BirdMoE: Reducing Communication Costs for Mixture-of-Experts Training Using Load-Aware Bi-random Quantization", in Proceedings of the 62th ACM/IEEE Design Automation Conference (DAC’25, CCF-A), San Francisco, CA, USA, July 22-16, 2025. pages:1-6.
• 2024
1. Cai Deng, Xiangyu Zou, Qi Chen, Bo Tang, and Wen Xia, "The Design of a Lossless Deduplication Scheme to Eliminate Fine-grained Redundancy for JPEG Image Storage Systems", IEEE Transactions on Computers (TC, CCF-A), Vol.73, No.5, February 2024, pages: 1385 - 1399.
2. Yanqi Pan, Hao Huang, Yifeng Zhang, Wen Xia, Xiangyu Zou, and Cai Deng, "Delaying Crash Consistency for Building A High-Performance Persistent Memory File System", IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (TCAD, CCF-A), Vol. 43，No. 9, March 2024, Pages 2620-2634.
3. Haoliang Tan, Xiangyu Zou, Binzhaoshuo Wan, Zhaoquan Gu, Wen Xia, "SuperDelta: Multiple Referenced Base Chunks Scheme for Fine-grained Deduplication Backup Storage System", in Proceedings of the 34th IEEE International Data Compression Conference (DCC'24, CCF-B). March 2024, pages: 362-371.
4. Yang Shi, Xiangyu Zou, Xinyu Chen, Sian Jin, Dingwen Tao, Cai Deng, Yufan Chen, Wen Xia, "Machete: An Efficient Lossy Floating-Point Compressor Designed for Time Series Databases", in Proceedings of the 34th IEEE International Data Compression Conference (DCC'24, CCF-B). March 2024, pages:532-541.
5. Haoliang Tan, Wen Xia, Xiangyu Zou, Cai Deng, Qing Liao, Zhaoquan Gu, "The Design of Fast Delta Encoding for Delta Compression Based Storage Systems", ACM Transactions on Storage (TOS, CCF-A), Vol.1, No.1, May 2024, pages: 1-14.
6. Yunsheng Dong, Boju Chen, Yanqi Pan, Xiangyu Zou, Wen Xia, "H2C-Dedup: Reducing I/O and GC Amplification for QLC SSDs from the Deduplication Metadata Perspective", in Proceedings of the 15th ACM Symposium on Cloud Computing (SoCC'24, CCF-B), Redmond, WA, USA, November 20-22, 2024, pages:704-719.
7. Donglei Wu, Weihao Yang, Xiangyu Zou, Dingwen Tal, Shiyi Li, Wen Xia, Binxing Fang, "BIRD+: Design of a Lightweight Communication Compressor for Resource-Constrained Distribution Learning Platforms", IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), Vol.35, No.11, November 2024, pages:2193-2207.
8. Lisha Qin, Haoliang Tan, Xiangyu Zou, Wenhao Ou, Yan Wei, Rubing Huang, and Wen Xia, "MiDedup: A Restore-friendly Deduplication Method on Docker Image Storage Systems", in Proceedings of the 20th Annual IFIP International Conference on Network and Parallel Computing (NPC'24, CCF-C), Haikou ,December 7-8, 2024.
• 2023
1. Yanqi Pan, Yifeng Zhang, Wen Xia, Xiangyu Zou and Cai Deng. "HUNTER: Releasing Persistent Memory Write Performance with A Novel PM-DRAM Collaboration Architecture", in Proceedings of the 60th ACM/IEEE Design Automation Conference (DAC, CCF-A), San Francisco, CA, USA, Jun. 2023.
2. Wenkai Liang, Hao Hu, Xiangyu Zou, Wen Xia and Yanqi Pan. "DRPTM: A Decoupled Read-efficient High-scalable Persistent Transactional Memory", in Proceedings of the 60th ACM/IEEE Design Automation Conference (DAC, CCF-A), San Francisco, CA, USA, Jun. 2023.
3. Wen Xia, Lifeng Pu, Xiangyu Zou*, Philip Shilane, Shiyi Li, Haijun Zhang, and Xuan Wang. "The Design of Fast and Lightweight Resemblance Detection for Efficient Post-Deduplication Delta Compression", ACM Transactions on Storage (TOS, CCF-A), in press.
4. Haoyu Jin, Donglei Wu, Shuyu Zhang, Xiangyu Zou, Sian Jin, Dingwen Tao, Qing Liao, and Wen Xia, "Design of a Quantization-Based DNN Delta Compression Framework for Model Snapshots and Federated Learning", IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), Vol. 34, no. 3, pp. 923-937, Jan. 2023.
5. Jiansheng Qiu, Yanqi Pan, Wen Xia, Xiaojia Huang, Wenjun Wu, Xiangyu Zou, Shiyi Li, and Yu Hua, "Light-Dedup: A Light-weight Inline Deduplication Framework for Non-Volatile Memory File Systems", in Proceedings of the 2023 USENIX Annual Technical Conference (USENIX ATC'23, CCF-A), Boston, MA, USA, July 10-12, 2023, pages:101-116.
6. Donglei Wu, Weihao Yang, Haoyu Jin, Xiangyu Zou, Wen Xia, and Binxing Fang, "FedComp: A Federated Learning Compression Framework for Resource-Constrained Edge Computing Devicess", IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (TCAD, CCF-A), Vol.43, No.1, September 2023, pages:230-243.
7. Donglei Wu, Weihao Yang, Xiangyu Zou, Wen Xia, Shiyi Li, Zhenbo Hu, Weizhe Zhang, and Binxing Fang, "Smart-DNN+: a Memory-Efficient Neural Networks Compression Framework for the Model Inference", ACM Transactions on Architecture and Code Optimization (TACO, CCF-A), Vol.20, No.4, September 2023 pages:49:1-49:24.
8. Donglei Wu, Weihao Yang, Cai Deng, Xiangyu Zou, Shiyi Li* and Wen Xia, "BIRD: A Lightweight and Adaptive Compressor for Communication-Efficient Distributed Learning Using Tensor-wise Bi-Random Sampling", in Proceedings of the 41th IEEE International Conference on Computer Design (ICCD, CCF-B), Washington DC, USA, Nov. 6-8, 2023. pages:605-613.
• 2022
1. Jingsong Yuan, Xiangyu Zou, Han Xu, Zhichao Cao, Shiyi Li, Wen Xia, Peng Wang and Li Chen, "A Focused Garbage Collection Approach for Primary Deduplicated Storage with Low Memory Overhead", in Proceedings of the 40th IEEE International Conference on Computer Design (ICCD, CCF-B), Lake Tahoe, USA, Otc. 2022.
2. Binzhaoshuo Wan, Lifeng Pu, Xiangyu Zou, Shiyi Li, Wen Xia and Peng Wang, "SuperCDC: A Hybrid Design of High-performance Content-Defined Chunking for Fast Deduplication", in Proceedings of the 40th IEEE International Conference on Computer Design (ICCD, CCF-B), Lake Tahoe, USA, Otc. 2022.
3. Xiangyu Zou, Wen Xia, Philip Shilane, Haijun Zhang and Xuan Wang, "Building a High-performance Fine-grained Deduplication Framework for Backup Storage with High Deduplication Ratio", in Proceedings of the 2022 USENIX Annual Technical Conference (USENIX ATC'22, CCF-A), Carlsbad, CA, USA, Jul. 2022.
4. Wen Xia, Can Wei, Zhenhua Li, Xuan Wang, and Xiangyu Zou, "NetSync: a Network Adaptive and Deduplication-Inspired Delta Synchronization Approach for Cloud Storage Services", IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), vol. 33, no. 19, pp. 2554-2570, Oct. 2022.
5. Xiangyu Zou, Jingsong Yuan, Philip Shilane, Wen Xia, Haijun Zhang, and Xuan Wang, "From Hyper-Dimensional Structure to Linear Structure: Maintaining Deduplicated Data's Locality", ACM Transactions on Storage (TOS, CCF-A), vol. 18(3), no. 25, pp.1-28, Aug. 2022.
6. Donglei Wu, Xiangyu Zou, Shuyu Zhang, Haoyu Jin, Wen Xia, and Binxing Fang "SmartIdx: Reducing Communication Cost in Federated Learning by Exploiting the CNNs Structures" in Proceedings of the 36th AAAI Conference on Artificial Intelligence (AAAI '22, CCF-A), Vancouver, Canada, Feb. 2022.
7. Cai Deng, Qi Chen, Xiangyu Zou, Eric Xu, Bo Tang and Wen Xia, "imDedup: a Lossless Deduplication Scheme to Eliminate Fine-grained Redundancy among Images," in Proceedings of the 38th IEEE International Conference on Data Engineering (ICDE '22, CCF-A), Kuala Lumpur, Malaysia, May. 2022.
• 2021
1. Shuyu Zhang, Donglei Wu, Haoyu Jin, Xiangyu Zou, Wen Xia and Xiaojia Huang, "QD-Compressor: a Quantization-based Delta Compression Framework for Deep Neural Networks," in Proceedings of the 39th IEEE International Conference on Computer Design (ICCD '21, CCF-B), Oct. 2021.
2. Zhenbo Hu, Xiangyu Zou, Wen Xia, Yuhong Zhao, Weizhe Zhang and Donglei Wu, "Smart-DNN: Efficiently Reducing the Memory Requirements of Running Deep Neural Networks on Resource-constrained Platforms," in Proceedings of the 39th IEEE International Conference on Computer Design (ICCD '21, CCF-B), Oct. 2021.
3. Xiangyu Zou, Cai Deng, Wen Xia, Philip Shilane, Haoliang Tan, Haijun Zhang, and Xuan Wang, "Odess: Speeding up Resemblance Detection for Redundancy Elimination by Fast Content-Defined Sampling," in Proceedings of the 37th IEEE International Conference on Data Engineering (ICDE '21, CCF-A), Chania, Greece, Apr. 2021.
4. Xiangyu Zou, Jingsong Yuan, Philip Shilane, Wen Xia, Haijun Zhang, and Xuan Wang, "The Dilemma between Deduplication and Locality: Can Both be Achieved?," in Proceedings of the 19th USENIX Conference on File and Storage Technologies (FAST '21, CCF-A), Santa Clara, CA, USA, Feb. 2021.
• 2020
1. Haoliang Tan, Zhiyuan Zhang, Xiangyu Zou, Qing Liao, and Wen Xia, "Exploring the Potential of Fast Delta Encoding: Marching to a Higher Compression Ratio," in Proceedings of IEEE International Conference on Cluster Computing (Cluster '20, CCF-B), Kobe, Japan, Sep. 2020.
2. Zhenbo Hu, Xiangyu Zou, Wen Xia, Sian Jin, Dingwen Tao, Yang Liu, Weizhe Zhang, Zheng Zhang, "Delta-DNN: Efficiently Compressing Deep Neural Networks via Exploiting Floats Similarity," in Proceedings of 49th International Conference on Parallel Processing (ICPP '20, CCF-B), Edmonton, AB, Canada, Aug. 2020.
3. Lingfeng Xiang, Yuan He, Wen Xia, Hong Jiang, Zhenhua Li, Xuan Wang, and Xiangyu Zou, "Dsync: a Lightweight Delta Synchronization Approach for Cloud Storage Services," in Proceedings of the 36th International Conference on Massive Storage Systems and Technology (MSST '20, CCF-B), Santa Clara, CA, USA, Oct. 2020.
4. Tao Lu, Wen Xia, Xiangyu Zou, and Qianbin Xia, "Adaptively Compressing IoT Data on the Resource-constrained Edge," in Proceedings of the 3rd USENIX Workshop on Hot Topics in Edge Computing (HotEdge '20), Boston, MA, USA, Jul. 2020.
5. Wen Xia, Xiangyu Zou, Yukun Zhou, Hong Jiang, Chuanyi Liu, Dan Feng, Yu Hua, Yuchong Hu, and Yucheng Zhang, "The Design of Fast Content-Defined Chunking for Data Deduplication based Storage Systems," IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), vol. 31, no. 9, pp. 2017-2031, Sept. 2020.
6. Xiangyu Zou, Tao Lu, Wen Xia, Xuan Wang, Weizhe Zhang, Haijun Zhang, Sheng Di, Dingwen Tao and Franck Cappello, "Performance Optimization for Relative-Error-Bounded Lossy Compression on Scientific Data," IEEE Transactions on Parallel and Distributed Systems (TPDS, CCF-A), vol.31, no.7, pp.1665-1680, Jul. 2020.
• 2019
1. Xiangyu Zou, Tao Lu, Sheng Di, Dingwen Tao, Wen Xia, Xuan Wang, Weizhe Zhang and Qing Liao, "Accelerating Lossy Compression on HPC datasets via Partitioning Computation for Parallel Processing," in Proceedings of the 21st IEEE International Conference on High Performance Computing and Communication (HPCC '19, CCF-C), Zhangjiajie, China, August. 2019.
2. Xiangyu Zou, Tao Lu, Wen Xia, Xuan Wang, Weizhe Zhang, Sheng Di, Dingwen Tao and Franck Cappello, "Accelerating Relative-error Bounded Lossy Compression for HPC datasets with Precomputation-Based Mechanisms," in Proceedings of the 35th International Conference on Massive Storage Systems and Technology (MSST '19, CCF-B), Santa Clara, CA, USA, May. 2019.
3. Wen Xia, Dan Feng, Hong Jiang, Yucheng Zhang, Victor Chang and Xiangyu Zou "Accelerating Content-Defined-Chunking based Data Deduplication by Exploiting Parallelism," Future Generation Computer Systems (FGCS, CCF-C), Vol.98:406-418, 2019.