Department of Computer Science
Jiaheng Lu's homepage
Jiaheng Lu

Associate Professor

Group leader of UDBMS

Department of Computer Science

University of Helsinki

Email :

Office : Exactum C211

[Suomi] [中文]

Short biography

Research goal: Improving the performance and usability of databases systems

I am a computer scientist and a teacher, with a broad interest in databases and data management. My recent interests include multi-model database management systems, semantic string processing and job optimization for big data platform.

I was awarded a PhD degree in 2007 from the National University of Singapore. My PhD topic was about XML query processing. I did two year Postdoc research at the University of California, Irvine. Then I joined the Renmin University of China in 2008, where I have worked for seven years. I am now working at the University of Helsinki, Finland. I have the broad research and teaching experiences in four countries (China, Singapore, USA, and Finland).


One of my books on Hadoop is awarded as one of the Top 10 Bestselling IT Books in China.



  1. A new Postdoc Researcher Dr. Lizhen Fu joined our research group in Helsinki at 15.11.2018. Welcome Lizhen! (16.11.2018).
  2. We will give a tutorial on CIKM 2018 for Multi-model Databases and Tightly Integrated Polystores. See Slides, More information. (09.09.2018)
  3. We published three papers on the vision and benchmark for multi-model databases: Vision 1, Vision 2, Benchmark (05.08.2018).
  4. An invited lecture on big data management on 2018 Summer School: Challenges for the XXI century: data, information and communication under the Utrecht Network collaboration. See the exercise questions. (28.06.2018).
  5. Congratulate my two PhD students (in Renmin University of China) successfully defend their PhD thesis! Juwei Shi: Performance Evaluation, Models and Optimization for Big Data Analytics Platforms. Yu Liu: Structural-Based Approximate Algorithms for Massive Graphs. (18.05.2018).
  6. One invited lecture in the EDUFI Winter School in 2018 on "Introduction to Big Data Management". [Talk_slides] [Task] (03.04.2018).
  7. A new PhD student Gongsheng Yuan joined our research group in Helsinki at 30.10.2017. Welcome Gongsheng! (03.11.2017).
  8. Archived news

Research Topics

Selected papers:

  1. Jiaheng Lu: Towards Benchmarking Multi-Model Databases(Abstract) CIDR 2017[PDF]
  2. Jiaheng Lu, Irena Holubova: Multi-model Data Management: What's New and What's Next? EDBT 2017 Tutorial [PDF][slides]

Selected papers:

  1. Pengfei Xu, Jiaheng Lu: Top-k String Auto-Completion with Synonyms. DASFAA (2) 2017: 202-218 [PDF, Slides, Source Codes]
  2. Jiaheng Lu, Chunbin Lin, Wei Wang, Chen Li, Xiaokui Xiao: Boosting the Quality of Approximate String Matching by Synonyms. ACM Trans. Database Syst. 40(3): 15 (2015) [PDF]
  3. Jiaheng Lu, Chunbin Lin, Wei Wang, Chen Li, Haiyong Wang: String similarity measures and joins with synonyms. SIGMOD Conference 2013: 373-384 [PDF]
More research topics and papers ...

Codes and dataset release


PhD students

  1. Gongsheng Yuan (2017-)
  2. Yuxing Chen (2017-)
  3. Pengfei Xu (2016-)
  4. Chao Zhang (2015-)
  5. Yu Liu (RenminU niversity of China) (2014-2018) (Co-supervised with Prof. Zhewei Wei)
  6. Juwei Shi (Renmin University of China) (2013-2018)
  7. Zhaoan Dong (Renmin University of China) (2013-)
  8. (Co-supervised with Prof. Xiaofang Zhou and Prof. Ju Fan)

    Detailed information ...

Academic service

Workshop co-chair:

  1. Workshop co-chair in ER 2018.
  2. Keyword search and data exploratory workshop 2016 with ICDE 2016
  3. Keyword search on structured data (KEYS) workshop with SIGMOD 2012
  4. XML-DM Workshop with WAIM 2010
  5. Cloud-DB workshop with CIKM 2010

Proceeding chair:

  1. IEEE ICDE Conference 2013

Program Committee:

  1. ACM SIGMOD'2010, 2013, 2014, 2015, 2016 Research track
  2. Very Large Database Conference Proceeding PVLDB 2010, 2015, 2017
  3. IEEE ICDE Conference 2011, 2017, 2019
  4. ER Conference 2018
  5. Database Systems for Advanced Applications Conference DASFAA 2010,2012, 2013, 2014
  6. Asia-Pacific Web Conference APWeb 2008, 2009, 2011, 2013, 2014, 2015
  7. Web-age information management Conference WAIM 2014,2015,2016
  8. WAIM-APWEB Conference 2017
  9. Web System Engineering (WISE) Conference 2009
  10. Chinese Conference on Information Retrieval (CCIR) 2015, 2016
  11. Australia Database Conference ADC 2013, 2017, 2018, 2019