Toyo (Toyotaro) Suzumura  Toyo (Toyotaro)  Suzumura photo         

contact information

Research Scientist / Manager, Department of Cognitive Graph Computing, MIT-IBM Watson AI Lab - Principal Investigator
Thomas Jr Watson Research Center, Yorktown Heights, New York, USA


Professional Associations

Professional Associations:  ACM  |  ACM SIGHPC  |  IEEE   |  IPSJ

more information

More information:  DBLP  |  ScaleGraph  |  Japanese  |  Graph500  |  Graph Research  |  Graph Analytics


Dr. Toyo (Toyotaro) Suzumura is a research scientist and manager of graph computing department in the IBM Research Division, at the Thomas J. Watson Research Center in Yorktown Heights, New York. He also served as a visiting full professor at Barcelona Supercomputing Center in Spain as well as a visiting researcher at the University of Tokyo in Japan. In 2017 he served a program committee chair for one of the largest big data conferences named IEEE BigData 2017.  He and his team have kept winning the world championship in supercomputing competition called Graph500 seven times since 2014.  Since 2018/9, he has also started to serve as a principal investigator in the MIT-IBM-Watson AI lab 

He holds his Ph.D. in computer science from Tokyo Institute of Technology. His Ph.D. thesis focused on Grid computing and large-scale distributed computing systems. His current research topics include large-scale graph analytics, deep learning, big data processing middlewares, supercomputing/high-performance computing, and microscopic simulation platforms on top of parallel and distributed computing environments.  He has been leading commercial projects with financial institutes to provide production-ready AI systems to detect financial frauds over millions of financial transactions. 

He joined IBM Research – Tokyo (namely TRL) in 2004 as a research scientist and has also continued to serve professorship in academia since 2009. Since April 2009, he had served as a visiting associate professor at Tokyo Institute of Technology in Japan and led his own research laboratory named Suzumura laboratory. Since October 2013, he moved to Smarter Technology Cities Center in IBM Research – Ireland as international assignment leading the large-scale traffic simulation project in Dublin, Ireland.  During the stay, he also served as a visiting associate professor at University College Dublin as well as an adjunct professor at Tokyo Institute of Technology in Japan. In Apri 2015, he completely transferred to IBM T.J. Watson Research Center in New York - a headquarter of IBM Research as a new journey. 

He is now a co-principal investigator for two Japanese government projects funded by Japan Science Foundation that aim at building next-generation big data processing middlewares and libraries. One of his notable achievements is that he has kept leading the team of winning the first place at the world competition of “Big Data” processing on supercomputers called “Graph500” ( 6 times since June 2014 by proposing a novel and highly scalable graph search algorithm on massively parallel and distributed computers and successfully implementing it on the Japanese K
supercomputer. He has also led a project “ScaleGraph” ( of developing an open source library for billion-scale graph analytics.

He has published more than 74 reviewed paper for top-quality international conferences and workshops, 42 domestic conferences, and 15 international patents, and also served invited speakers, workshop chairs and/or program committee members for top-tier conferences such as ACM/IEEE Supercomputing and ACM International World Wide Web Conference. He served as a PC co-chair for IEEE ICCC 2018, IEEE BigData 2017, industrial PC co-chair for IEEE BigData 2016. 

Current and Prior Positions

  • IBM T.J. Watson Research Center - IBM Research 
    Research Scientist / Manager, Cognitive Graph Computing Department 
    4/2015 - Present

  • MIT-IBM Watson AI Lab, Principal Investigator, 
    09/2018 - Present 
  • Barcelona Supercomputing Center
    Visiting Full Professor
    4/2016 - Present

  • The University of Tokyo
    Visiting Researcher
    4/2016 - 03/2018

  • IBM Research - Ireland, Smarter Cities Technology Centre 
    Research Staff Member
    10/2013 - 10/2015 
    Visiting Associate Professor in University College Dublin in Ireland 

  • IBM Research - Tokyo
    Research Staff Member
    4/2004 - 9/2013

  • Tokyo Institute of Technology
    Visiting Associate Professor - leading his own research laboratory named "Suzumura laboratory". Supervised 16 students including master and Ph.D. students.  We have achieved to win world championships in big data competition on supercomputers called Graph500. 
    2009/04 - 2013/09 

 Academic Conference Roles

  • Big Data
    • Program co-Chair, IEEE BigData 2017 
    • Industrial Program PC co-Chair, IEEE BigData 2016
  • Supercomputing / HPC 
    • Program Committee Member, Supercomputing 2016 (SC'16), SC'15, SC'14
    • PC Member, IEEE IPDPS 2015, 
    • PC Member, IEEE Cluster 2015
  • Graph Analytics 
    • Workshop Chair, ACM WWW 2014 (World Wide Web) LSNA (Large-Scale Network Analysis) Workshop
    • Workshop Chair, HPDC workshop, ICDM workshop, KDD workshop 
    • Workshop Chair, Supercomputing, Graph workshop 
    • Workshop Chair, KDD, 2015, Australia 
    • Workshop Chair, ICDM
  • AI
    • Program co-Chair, IEEE ICCC 2018 (International Conference on Cognitive Computing) 
  •  Cloud Computing 
    • Application Track Chair, IEEE Cloud 2017 
    • Program Committee Member, IEEE Cloud 2018, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009 
  • Web Services
    • Program Committee Member, IEEE ICWS 2019, 2018, 2017, 2016, 2015, 2014   
  • Simulation
    • Track Chair - Big Data Decision Making, Informs Winter simulation conference, 2015
    • Program Committee Member, WSC (Winter Simulation Conference) 2014, 2013