Huanchen Zhang

Alumni

• Improving Range Scan Performance in LSM-trees with Group Caching
  Hengrui Wang, Jiaoyi Zhang, Jiansheng Qiu, Fangzhou Yuan, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'26), To Appear.
  

• Aeris Filter: A Strongly and Monotonically Adaptive Range Filter
  Yuvaraj Chesetti, Navid Eslami, Huanchen Zhang, Niv Dayan, and Prashant Pandey
  Proceedings of the ACM on Management of Data (SIGMOD'26), To Appear.
  

• F3: The Open-Source Data File Format for the Future
  Xinyu Zeng, Ruijun Meng, Martin Prammer, Wes McKinney, Jignesh M. Patel, Andrew Pavlo, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'26), 3(4): Article 245, 27 pages. CODE
  

• SHMemora: Protective Key-Value Store on Distributed Shared Memory
  Jiajun Luo, Siyu Lin, Yunpeng Xu, Shengwei Liu, Jin Xia, Dong Liu, Zheng Liu, Huanchen Zhang, Teng Ma, and Shuwen Deng
  Proceedings of the 42nd IEEE International Conference on Data Engineering (ICDE'26), To Appear.
  

• Enabling Tile-Based Direct Query on Adaptively Compressed Data With GPU Acceleration
  Yu Zhang, Feng Zhang, Yani Liu, Huanchen Zhang, Jidong Zhai, Wenchao Zhou, and Xiaoyong Du
  IEEE Transactions on Parallel and Distributed Systems (TPDS'26), Feb. 2026, vol. 37, pp. 410-426.
  

• Declarative Memory Services
  Jeronimo Castrillon, Jana Giceva, Yu Hua, Kimberly Keeton, Akhil Shekar, Kevin Skadron, Tianzheng Wang, and Huanchen Zhang
  Proceedings of the 2026 Conference on Innovative Data Systems Research (CIDR'26), January 2026.
  

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• OkraLong: A Flexible Retrieval-Augmented Framework for Long-Text Query Processing
  Yulong Hui, Yihao Liu, Yao Lu, and Huanchen Zhang
  Empirical Methods in Natural Language Processing (EMNLP'25), November 2025.
  

• Selective Late Materialization in Modern Analytical Databases
  Yihao Liu, Shaoxuan Tang, Yulong Hui, Hangrui Zhou, and Huanchen Zhang
  Proceedings of the VLDB Endowment (VLDB'25), 18(11), pp. 4616-4628.
  

• Concurrency Control as a Service
  Weixing Zhou, Yanfeng Zhang, Xinji Zhou, Zhiyou Wang, Zeshun Peng, Yang Ren, Sihao Li,
  Huanchen Zhang, Guoliang Li, and Ge Yu
  Proceedings of the VLDB Endowment (VLDB'25), 18(9), pp. 2761-2774.
  

• GORAM: Graph-oriented ORAM for Efficient Ego-centric Queries on Federated Graphs
  Xiaoyu Fan, Kun Chen, Jiping Yu, Xiaowei Zhu, Yunyi Chen, Huanchen Zhang, and Wei Xu
  Proceedings of the VLDB Endowment (VLDB'25), 18(10), pp. 3601-3614.
  

• Accordion: Balancing Performance and Cost in Cloud-Native Data Analysis with Intra-Query Runtime Elasticity
  Xukang Zhang, Huanchen Zhang, and Xiaofeng Meng
  Proceedings of the VLDB Endowment (VLDB'25 Demo), 18(12), pp. 5307-5310.
  

• HotRAP: Hot Record Retention and Promotion for LSM-trees with Tiered Storage
  Jiansheng Qiu, Fangzhou Yuan, Mingyu Gao, and Huanchen Zhang
  Proceedings of the 2025 USENIX Annual Technical Conference (ATC'25), pp. 497-511.
  

• TwinStore: Secure Key-Value Stores Made Faster with Hybrid Trusted/Untrusted Storage
  Xiang Li, Huanchen Zhang, and Mingyu Gao
  Proceedings of the 16th International Symposium on Advanced Parallel Processing Technologies (APPT'25), pp. 321-336.
  

• PUSHtap: PIM-based In-Memory HTAP with Unified Data Storage Format
  Yilong Zhao, Mingyu Gao, Huanchen Zhang, Fangxin Liu, Gongye Chen, He Xian, Haibing Guan, and Li Jiang
  Proceedings of the 30th ACM International Conference on Architectural Support for Programming Languages
  and Operating Systems (ASPLOS'25), Volume 3, pp. 179-194.
  

• Debunking the Myth of Join Ordering: Toward Robust SQL Analytics
  Junyi Zhao, Kai Su, Yifei Yang, Xiangyao Yu, Paraschos Koutris, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'25), 3(3): Article 146, 28 pages. CODE SLIDES
  

• Rethinking The Compaction Policies in LSM-trees
  Hengrui Wang, Jiansheng Qiu, Fangzhou Yuan, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'25), 3(3): Article 207, 26 pages.
  

• Intra-Query Runtime Elasticity for Cloud-Native Data Analysis
  Xukang Zhang, Huanchen Zhang, and Xiaofeng Meng
  Proceedings of the ACM on Management of Data (SIGMOD'25), 3(3): Article 178, 28 pages.
  

• Femur: A Flexible Framework for Fast and Secure Querying from Public Key-Value Store
  Jiaoyi Zhang, Liqiang Peng, Mo Sha, Weiran Liu, Xiang Li, Sheng Wang, Feifei Li, Mingyu Gao, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'25), 3(3): Article 162, 29 pages.
  

• Data Chunk Compaction in Vectorized Execution
  Yiming Qiao and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'25), 3(1): Article 26, 25 pages.
  

• ANSMET: Approximate Nearest Neighbor Search with Near-Memory Processing and Hybrid Early Termination
  Yiwei Li, Yuxin Jin, Boyu Tian, Huanchen Zhang, and Mingyu Gao
  Proceedings of the 52nd Annual International Symposium on Computer Architecture (ISCA'25), June 2025, pp. 1093 - 1107
  

• ReaLHF: Optimized RLHF Training for Large Language Models through Parameter Reallocation
  Zhiyu Mei, Wei Fu, Kaiwei Li, Guangju Wang, Huanchen Zhang, and Yi Wu
  Proceedings of the Eighth Conference on Machine Learning and Systems (MLSys'25), May 2025. CODE
  

• Towards Functional Decomposition of Storage Formats
  Martin Prammer, Xinyu Zeng, Ruijun Meng, Wes McKinney, Huanchen Zhang, Andrew Pavlo, and Jignesh M. Patel
  Proceedings of the 2025 Conference on Innovative Data Systems Research (CIDR'25), January 2025.
  

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• UDA: A Benchmark Suite for Retrieval Augmented Generation in Real-world Document Analysis
  Yulong Hui, Yao Lu, and Huanchen Zhang
  Proceedings of the Thirty-Eighth Annual Conference on Neural Information Processing (NeurIPS'24), December 2024. CODE
  

• Cloud-Native Databases: A Survey
  Haowen Dong, Chao Zhang, Guoliang Li, and Huanchen Zhang
  IEEE Transactions on Knowledge and Data Engineering (TKDE'24), 36(12), pp. 7772-7791.
  

• Blitzcrank: Fast Semantic Compression for In-memory Online Transaction Processing
  Yiming Qiao, Yihan Gao, and Huanchen Zhang
  Proceedings of the VLDB Endowment (VLDB'24), 17(10), pp. 2528-2540. CODE
  

• An Empirical Evaluation of Columnar Storage Formats
  Xinyu Zeng, Yulong Hui, Jiahong Shen, Andrew Pavlo, Wes McKinney, and Huanchen Zhang
  Proceedings of the VLDB Endowment (VLDB'24), 17(2), pp. 148-161. CODE
  

• NULLS!: Revisiting Null Representation in Modern Columnar Formats
  Xinyu Zeng, Ruijun Meng, Andrew Pavlo, Wes McKinney, and Huanchen Zhang
  Proceedings of the 20th International Workshop on Data Management on New Hardware (DaMoN'24), June 2024. CODE
  

• Making In-Memory Learned Indexes Efficient on Disk
  Jiaoyi Zhang, Kai Su, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'24), 2(3): Article 151, 26 pages. CODE
  

• GRF: A Global Range Filter for LSM-Trees with Shape Encoding
  Hengrui Wang, Te Guo, Junzhao Yang, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'24), 2(3): Article 141, 27 pages.
  

• PimPam: Efficient Graph Pattern Matching on Real Processing-in-Memory Hardware
  Shuangyu Cai, Boyu Tian, Huanchen Zhang, Mingyu Gao
  Proceedings of the ACM on Management of Data (SIGMOD'24), 2(3): Article 161, 25 pages.
  

• LeCo: Lightweight Compression via Learning Serial Correlations
  Yihao Liu, Xinyu Zeng, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'24), 2(1): Article 65, 28 pages. CODE
  

• SALI: A Scalable Adaptive Learned Index Framework based on Probability Models
  Jiake Ge, Huanchen Zhang, Boyu Shi, Yuanhui Luo, Yunda Guo, Yunpeng Chai, Yuxing Chen, and Anqun Pan
  Proceedings of the ACM on Management of Data (SIGMOD'24), 1(4): Article 258, 25 pages.
  

• Beyond Bloom: A Tutorial on Future Feature-Rich Filters
  Prashant Pandey, Martín Farach-Colton, Niv Dayan, and Huanchen Zhang
  Proceedings of the ACM on Management of Data (SIGMOD'24) Tutorial, June 2024.
  

• Cost-Intelligent Data Analytics in the Cloud
  Huanchen Zhang, Yihao Liu, Jiaqi Yan
  Proceedings of the 2024 Conference on Innovative Data Systems Research (CIDR'24), January 2024. SLIDES
  

• SRL: Scaling Distributed Reinforcement Learning to Over Ten Thousand Cores
  Zhiyu Mei, Wei Fu, Guangju Wang, Huanchen Zhang, and Yi Wu
  Proceedings of the Twelfth International Conference on Learning Representations (ICLR'24), May 2024. CODE
  

• AdaCom: Adaptive Compression For Databases
  Leon Windheuser, Christoph Anneser, Huanchen Zhang, Thomas Neumann, and Alfons Kemper
  Proceedings of the 27th International Conference on Extending Database Technology (EDBT'24), March 2024.
  

• G-Learned Index: Enabling Efficient Learned Index on GPU
  Jiesong Liu, Feng Zhang, Lv Lu, Chang Qi, Xiaoguang Guo, Dong Deng, Guoliang Li, Huanchen Zhang, Jidong Zhai,
  Hechen Zhang, Yuxing Chen, Anqun Pan, Xiaoyong Du
  IEEE Transactions on Parallel and Distributed Systems (TPDS'24), 35(6), pp. 795-812.
  

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• Compressed Data Direct Computing for Databases
  Weitao Wan, Feng Zhang Zhang, Chenyang Zhang, Mingde Zhang, Jidong Zhai, Yunpeng Chai, Huanchen Zhang, Wei Lu,
  Yuxing Chen, Haixiang Li, Anqun Pan, and Xiaoyong Du
  IEEE Transactions on Knowledge and Data Engineering (TKDE'23), 36(5), pp. 1902-1918.
  

• Efficient Query Re-optimization with Judicious Subquery Selections
  Junyi Zhao, Huanchen Zhang, and Yihan Gao
  Proceedings of the ACM on Management of Data (SIGMOD'23), 1(2), pp. 1-26. CODE
  

• When Tree Meets Hash: Reducing Random Reads for Index Structures on Persistent Memories
  Ke Wang, Guanqun Yang, YiWei Li, Huanchen Zhang, and Mingyu Gao
  Proceedings of the ACM on Management of Data (SIGMOD'23), 1(1), pp. 1-26. CODE
  

• CompressGraph: Efficient Parallel Graph Analytics with Rule-Based Compression
  Zheng Chen, Feng Zhang, JiaWei Guan, Jidong Zhai, Xipeng Shen, Huanchen Zhang, Wentong Shu, and Xiaoyong Du
  Proceedings of the ACM on Management of Data (SIGMOD'23), 1(1), pp. 1-31.
  

• Blink-hash: An Adaptive Hybrid Index for In-Memory Time-Series Databases
  Hokeun Cha, Xiangpeng Hao, Tianzheng Wang, Huanchen Zhang, Aditya Akella, and Xiangyao Yu
  Proceedings of the VLDB Endowment (VLDB'23), 16(6), pp. 1235-1248. CODE
  

• REncoder: A Space-Time Efficient Range Filter with Local Encoder
  Wang, Ziwei, Zheng Zhong, Jiarui Guo, Yuhan Wu, Haoyu Li, Tong Yang, Yaofeng Tu, Huanchen Zhang, and Bin Cui
  Proceedings of the 39th IEEE International Conference on Data Engineering (ICDE'23). CODE
  

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• Adaptive Hybrid Indexes
  Christoph Anneser, Andreas Kipf, Huanchen Zhang, Thomas Neumann, and Alfons Kemper
  Proceedings of the 2022 International Conference on Management of Data (SIGMOD'22), June 2022, pp. 1626-1639.
  

• Proteus: A Self-Designing Range Filter
  Eric R. Knorr, Baptiste Lemaire, Andrew Lim, Siqiang Luo, Huanchen Zhang, Stratos Idreos, Michael Mitzenmacher
  Proceedings of the 2022 International Conference on Management of Data (SIGMOD'22), June 2022, pp. 1670-1684. CODE
  

• Succinct Range Filters
  Huanchen Zhang, Hyeontaek Lim, Viktor Leis, David G. Andersen, Michael Kaminsky, Kimberly Keeton, and Andrew Pavlo
  Communications of the ACM (CACM). 4 (April 2021): 166-173.
  

• Everything is a Transaction: Unifying Logical Concurrency Control and Physical Data Structure Maintenance in
  Database Management Systems
  Ling Zhang, Matthew Butrovich, Tianyu Li, Yash Nannapanei, Andrew Pavlo, John Rollinson, Huanchen Zhang
  Proceedings of the Conference on Innovative Data Systems Research (CIDR'21), Jan. 2021.
  

• Memory-Efficient Search Trees for Database Management Systems
  2021 SIGMOD Jim Gray Dissertation Award
  Ph.D. Dissertation, February 2020 SLIDES VIDEO
  

• Order-Preserving Key Compression for In-Memory Search Trees
  Huanchen Zhang, Lily Liu, David G. Andersen, Michael Kaminsky, Kimberly Keeton, and Andrew Pavlo
  Proceedings of the 2020 International Conference on Management of Data (SIGMOD'20), June 2020.
  ARXIV CODE SLIDES VIDEO
  

• Succinct Range Filters
  Huanchen Zhang, Hyeontaek Lim, Viktor Leis, David G. Andersen, Michael Kaminsky, Kimberly Keeton, and Andrew Pavlo
  ACM Transactions on Database Systems (TODS). 45.2 (2020): 1-31.
  

• Succinct Range Filters
  Huanchen Zhang, Hyeontaek Lim, Viktor Leis, David G. Andersen, Michael Kaminsky, Kimberly Keeton, and Andrew Pavlo
  ACM SIGMOD Record. 48.1 (2019): 78-85.
  

• SuRF: Practical Range Query Filtering with Fast Succinct Tries
  Best Paper Award
  Huanchen Zhang, Hyeontaek Lim, Viktor Leis, David G. Andersen, Michael Kaminsky, Kimberly Keeton, and Andrew Pavlo
  Proceedings of the 2018 International Conference on Management of Data (SIGMOD'18), June 2018, pp. 323–336.
  CODE DEMO SLIDES VIDEO
  

• Building a Bw-Tree Takes More Than Just Buzz Words.
  Ziqi Wang, Andrew Pavlo, Hyeontaek Lim, Viktor Leis, Huanchen Zhang, Michael Kaminsky, and David G. Andersen
  Proceedings of the 2018 International Conference on Management of Data (SIGMOD'18), June 2018, pp. 473-488. CODE
  

• Reducing the Storage Overhead of Main-Memory OLTP Databases with Hybrid Indexes
  Huanchen Zhang, David G. Andersen, Andrew Pavlo, Michael Kaminsky, Lin Ma, and Rui Shen
  Proceedings of the 2016 International Conference on Management of Data (SIGMOD'16), June 2016, pp. 1567–1581. SLIDES
  

• I teach Introduction to Programming (30470332-0) in fall and Database Systems (40470414-0) in spring.

• SIGMOD Program Committee -- 2026 2023 2022 2021 2020
• VLDB Program Committee -- 2026 2025 2024 2023
• ICDE Program Committee -- 2022
• Jim Gray Award Committee -- 2024 2023 2022
• DaMoN Program Committee -- 2025 2024
• AIDB Program Committee -- 2021
• APSys Program Committee -- 2025
• HOPC Program Committee -- 2024 2025