WAMDM means " Web And Mobile Data Management", Which is Professor Xiaofeng Meng's research lab and is affiliated with the Key Laboratory for Data Engineering and Knowledge Engineering MOE and the Department of Computer Science, School of Information, Renmin University of China.

The research vision in WAMDM is how database techniques would fit into the Web and Mobile computing environments. The research style in our lab is having two tracks - research and system - in order to ensure that the research is actually applied. Innovative data systems research is our goal.

WAMDM Lab has been conducting database related research for many years, and is considered one of the best database groups in the country. It's projects range from the Web Data Management, XML Data Management to Mobile Data Management in the past ten years. Now we are focusing on Cloud data management, databases for new storage hardware, privacy protection for mobile Web, social computing etc. in the new decade.

The site contains information on the projects that are currently in progress and the people in the group. You can also find information on the weekly seminar and annual report. In addition, this site hosts the following webpages:


[Conferences & Others]
PSBD 2017 ChinaPrivacy 2017  ChinaPrivacy 2016
HardBD 2018  HardBD 2016  HardBD 2015  HardBD 2014 CloudDM 2016  CloudDM 2015  CloudDB 2014
WAIM 2013 BDSC 2017   NCSC 2012
XLDB Asia 2012 HardBD 2013  FlashDB2012    FlashDB2011
CloudDB2013 CloudDB2012 CloudDB2011 CloudDB2010 CloudDB2009 NDBC2010
MDM2008 WISA2007
CCF BigData 2013 Database Society of China Computer Federation

Hot Events  
Lab Seminars
  • 2018-11-02 Real-Time Query Enabled by Variable Precision in Astronomy byYongjie Du
  • Abstract: As sky survey projects are coming out, petabytes and exabytes of astronomical data are continuously collected from highly productive space missions. Especial-ly, in time-domain astronomy, Short-Timescale and Large Field-of-view (STLF) sky survey not only requires real-time analysis on short-time data, but also need precise astronomical data for special phenomena. Additionally, it is important to find a partition method and build an index based on it for effective storage and query. However, the existing methods cannot simultaneously support real-time and variable-precision query in astronomy. In this paper, we propose a novel as-tronomical real-time and variable precision query method based on data partition-ing with Hierarchical Equal Area isoLatitude Pixelation (HEALPix for short). Our method calculates the time through model and predict precision by machine learning, which can accurately predict the partition level number of HEALPix which can effectively reduce the cost of time for query by layer and layer. The method can meet the user's requirements of real-time and variable-precision que-ry. The experimental results show that our method can optimize previous query strategies and reach a better performance.
  • 2018-11-02 数据透明技术研究综述 by Lixin Liu
  • Abstract: 大数据蕴含着巨大的价值,已经成为信息社会的核心资源,然而发挥其价值的同时也带来了隐私泄露、数据操纵、数据滥用和算法“黑盒”等问题。这些问题产生的根本原因是大数据价值实现过程的不透明性及其特点导致的监管困难,人们迫切希望大数据价值实现过程是透明的和可验证的。区块链具有公开、透明、不篡改等特点,已经逐步应用大数据生命周期的各阶段中,增强大数据价值实现过程的透明性,促进大数据的问责使用。本文总结和对比分析了区块链在数据获取、共享、分析和删除几个阶段的研究进展,最后探讨了数据透明技术未来发展方向。
    Invited Talks
    • Prof Meng . Keynote Speech . “Big data and social computing” . China National Conference on Big Data & Social Computing (BDSC2017). 2017-08-12.Lanzhou.[News]
    • Prof Meng . Keynote Speech . “Issues and challenges of Large scale privacy protection”. China Privacy Protection Conference(ChinaPrivacy2017).2017-08-04.Guiyang.[News]
    • Prof Meng . Keynote Speech . “Practice and Prospect of scientific big data management systems”. Conference on scientific data(2017). 2017-08-02 .Yunnan.[News]
    • Prof Meng . Keynote Speech . “Privacy protection in big data governance” . RenMim University of China . 2016-11-7 .Beijing.[News]
    • Prof Meng . Keynote Speech . “Data open and privacy protection” . Information Security Technology Conference & Expo 2016 .2016-10-14 .Qingdao.[News]
    • Prof Meng . Keynote Speech . “The challenges of scientific big data management systems” . Conference on scientific data(2016) .2016-06-25.Shanghai.[News]
    • Prof Meng . Keynote Speech . “Big data privacy protection” .International Conference on Cryptography and Cloud Computing Security (CCCS2016) . Guangzhou University. 2016-06-17.Guangzhou.[News]
    • Prof Meng . Keynote Speech . “Challenge and opportunity of big data management systems” . Database Technology Conference China (DTCC 2016 ).2016-05-12. Beijing.[News]
    • Prof Meng . Keynote Speech . “Big data management: issues and Reflections” . Jingdezhen Ceramic Institute .2016-05-06.Jingdezhen.[News]
    • Prof Meng . Invited talk . “Big data fusion” . Jiangxi University of Finance And Economics . 2016-05-05 . Nanchang .[News]
    • Prof Meng . Invited Talk . Big data storage and privacy. Big data Forum . Beijing University of Techonolgy . 2016-01-18.Beijing.[News]
    • Prof Meng. Keynote speech. “Location Big Data Privacy Protection”. the 2015 International CAE Symposium on Ubiquitous Syrveying . 2015-11-06.Wuhan.[News]
    • Prof Meng .Keynote Speech. “Big data privacy management”. NSFC Shuangqing Forum rity. 2015-05-06.Bon State Secueijing.[News]
    • Prof. Meng. Keynote speech. "Big Data Privacy Management". CNCC 2014 Open Data and Privacy Management Forum . 2014-10-25. Zhengzhou. [News]
  • [Sep,15,2017]Prof. Meng Gave the Invited Talk about Research and Impact at Springer Nature YOCSEF club in Beijing[Detail]
  • [Aug,22,2017]Beijing International Book Fair "Big Data Management Book Series" copyright export signing ceremony[Detail]
  • [Jan 05,2017] Large-scale Industry-specific Knowledge Graph Building Seminar Hosted by WAMDM[Detail]
  • [Dec 09,2016] Big Data Management Based on New Hardware Seminar Hosted by WAMDM[Detail]
  • [Nov 07,2016] The First China Privacy Protection Conference Hosted by WAMDM[Detail]
  • [Dec 02,2015] Big Data Architecture Seminar Hosted by WAMDM Lab[Detail]
  • [Nov 06,2015] Prof Meng Gave the keynote speech on the 2015 International CAE Symposium on Ubiquitous Syrveying, Mapping and Big Data of Locations[Detail]
  • [Oct 29,2015] Prof Meng Visiting Purdue University[Detail]
  • [July 17,2015] Prof Meng gave an invited talk at Tianjin University of Technology[Detail]
  • [May 14,2015] Big Data Privacy Management Seminar Hosted by WAMDM Lab[Detail]
  • [Apr 08,2015] Complex Correlation Data Management Seminar Hosted by WAMDM Lab[Detail]
  • [Jan 20,2015] Prof Elisa Bertino from Purdue University visiting WAMDM Lab[Detail]
  • [Oct 30,2014] Prof Meng Chaired "Open Data and Privacy Management Forum" on CNCC2014[Detail]
  • [Oct 28,2014] Big Data paper selected in Frontrunner 5000 (Top Articles from Outstanding S&T Journals in China)[Detail]
  • [May 07,2014] Prof Meng gave Keynote speech on 2014 High Education Information Summit. Xi'an, May 7, 2014[Detail]
  • [Apr 16,2014] CCF@U193:Prof Meng gave invited talk in Beijing Technology and Business University[Detail]
  • [Jan 06,2014]Prof. Meng elected 2013 CCF Fellow [Detail]
  • [more]
    Recent and Selected Publications
  • C. Wang, X. Meng, et al. Automating Characterization Deployment in Distributed Data Stream Management Systems[J]. Accepted for publication in IEEE Transactions on Knowledge and Data Engineering(TKDE). (Full Paper)
  • C. Yang, Q. Guo, X. Meng, et al. Revisiting Performance in Big Data Systems: A Resource Decoupling Approach. Accepted for publication in Proceedings of ACM Symposium on Cloud Computing(SoCC), Santa Clara , CA.(Poster)
  • C. Wang, X. Meng. Partitioning Road Network Streams Based on Runtime Correlation Discovery[C]. Proceedings of the 18th IEEE International Conference on the Mobile Data Management (MDM), pages: 272-277,2017, Daejeon, South Korea.[PDF]
  • Y. Li, X. Meng, Zhang Q, et al. Common patterns of online collective attention flow[J]. Science China Information Sciences, Vol 60(5): 059102:1-3, 2017.[PDF]
  • Z. Weng, Q. Guo, C. Wang, et al. AdaStorm: Resource Efficient Storm with Adaptive Configuration[C]. Proceedings of the 33rd International Conference on Data Engineering (ICDE) , pages: 1363-1364, 2017, San Diego, CA.[PDF]
  • Z. Du, Z. Hao, X. Meng, et al. CirE: Circular Embeddings of Knowledge Graphs[C]. Proceedings of the International Conference on Database Systems for Advanced Applications (DASFFA), pages:148-162, 2017, Suzhou, China.[PDF]
  • Z. Hao, Z. Wang, X. Meng, et al. Semantic Definition Ranking[C]. Proceedings of the International Conference on Database Systems for Advanced Applications (DASFFA), pages:153-168, 2017, Suzhou, China.[PDF]
  • S. Guo, X. Meng. Density Peaks Clustering with Differential Privacy[C]. Proceedings of the 8th Biennial Conference on Innovative Data Systems Research(CIDR),2017, Chaminade, CA.
  • Wang C, Meng X, Guo Q, et al. OrientStream: A Framework for Dynamic Resource Allocation in Distributed Data Stream Management Systems[C].Proceedings of the 25th ACM International on Conference on Information and Knowledge Management(CIKM),pages: 2281-2286, 2016,Indianapolis,IN.[PDF]
  • Ma Y, Meng X, Wang S. Parallel similarity joins on massive high‐dimensional data using MapReduce[J]. Concurrency and Computation: Practice and Experience, Vol 28(1): 166-183, 2016.
  • J.Wang,Z. Guo, X.Meng. An Efficient Design and Implementation of Multi-Level Cache for Database Systems [C]. Proceedings of the20th International Conferenceon Database Systems for Advanced Applications (DASFAA),pages: 160-174, 2015,Hanoi, Vietnam.[PDF]
  • J.Wang,Z. Guo, X. Meng. SASS: A High-Performance Key-Value Store Design for Massive Hybrid Storag[C]. Proceedings of the20th International Conferenceon Database Systems for Advanced Applications (DASFAA),pages: 145-159,2015,Hanoi, Vietnam.[PDF]
  • L.Wang, X.Meng, H. Hu, et al. Bichromatic Reverse Nearest Neighbor Query without Information Leakage. [C]. Proceedings of the20th International Conferenceon Database Systems for Advanced Applications (DASFAA),pages:609-624,2015,Hanoi, Vietnam.[PDF]
  • Y. Ma, X. Meng. Set similarity join on massive probabilistic data using MapReduce. Distributed and Parallel Databases. Vol 32(3): 447-464, 2014.[PDF]
  • Y. Fan, W. Lai, X. Meng. Optimizing Database Operators by Exploiting Internal Parallelism of Solid State Drives. IEEE Data Eng. Bull. Vol 37(2): 12-18, 2014.[PDF]
  • X. Zhang, R. Chen, J. Xu, X. Meng. Towards Accurate Histogram Publication under Differential Privacy. Accepted for publication in Proceedings of the 14th SIAM International Conference on Data Mining (SDM 2014): 587-595, Philadelphia, Pennsylvania, USA. (Full Paper)[PDF]
  • J. Zhou, Z. Bao, W. Wang, J. Zhao, X. Meng: Efficient Query Processing for XML Keyword Queries based on the IDList Index. Accepted by VLDBJ. Vol 23(1): 25-50, 2014.[PDF]
  • Z. Huo, X. Meng, R. Zhang: Feel Free to Check In: Privacy Alert against Hidden Location Inference Attacks in GeoSN. In Processings of the 18th International Conference on Database Systems for Advanced Applications (DASFAA 2013): 377-491. April 22-25, 2013, Wuhan, China. (Regular paper)[PDF]
  • X. Zhang, X. Meng, R. Chen: Differential Private Set-Valued Data Release against Incremental Updates. In Proceedings of the 18th International Conference on Database Systems for Advanced Applications (DASFAA 2013): 392-406. April 22-25, 2013, Wuhan, China. (Regular paper)[PDF]
  • Y. Gan, X. Meng, Y. Shi: COLA: A Cloud-based System for Online Aggregation (Demonstration). In Proceedings of the 29th International Conference on Data Engineering(ICDE2013): 1368-1371, April 8-12, 2013, Brisbane, Australia.[PDF]
  • W. Cao, D. SHASHA: AppSleuth: a Tool for Database Tuning at the Application Level. In Proceedings of the 16th International Conference on Extending Database Technology (EDBT2013): 589-600. March 18-22, Genoa, Italy.[PDF]
  • D. SHASHA, W .Cao: Tuning in Action (Demonstration) In Proceedings of the 16th International Conference on Extending Database Technology (EDBT 2013): 737-740. March 18-22, Genoa, Italy.[PDF]
  • [more]