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 PhD student Gongsheng Yuan joined our research group in Helsinki at 30.10.2017. Welcome Gongsheng! (03.11.2017).
  2. One talk on our current two research projects at the Aalto University. See [slides] . (22.10.2017).
  3. We are awarded a new grant on multi-model data management from the Academy of Finland. See abstract. (22.06.2017).
  4. A new PhD student Yuxing Chen will join our research group in Helsinki at 06.03.2017. Welcome Yuxing! (04.03.2017).
  5. We will give a new tutorial on multi-model data management in EDBT conference 2017 [PDF][slides] (01.02.2017).
  6. We are awarded a new grant on heterogenous big data platform by Huawei Company (14.12.2016).
  7. "Towards Benchmarking Multi-Model Databases" CIDR 2017 [Abstract] (16.10.2016).
  8. Our group made a poster presentation in Linux Jubilee seminar at the department on 22,August 2016. [Poster] (16.10.2016).
  9. A new PhD student Chao Zhang will join our research group in Helsinki at 09.09.2016. Welcome Chao! (03.09.2016).
  10. Prof. Irena Holubova from Charles University in Prague visited our group (June-August, 2016) for the collabration on multi-model databases. Thanks Irena! (03.09.2016).
  11. We organized a workshop with ICDE 2016 in Helsinki on keyword search and data exploration (20.05.2016).
  12. We organized the First Europe-China workshop on Big Data Management in the University of Helsinki (16.05.2016).

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- )
  6. Juwei Shi (Renmin University of China) (2013- )
  7. Zhaoan Dong (Renmin University of China) (2013-)

Academic service

Workshop co-chair:

  1. Workshop co-chair with Prof. Carson Woo 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
  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