English/Japanese

Profile

Ph.D., Software Engineer at Treasure Data.

• Linked-in
• GitHub @xerial
• X (formerly Twitter) @taroleo
• Mastodon @taroleo
• Aritcles at Medium

Programming

• Language Skills: Scala (current favorite), Java, C/C++, Ruby, Python, Perl, R, Scheme, OCaml, Z80, etc.
  • Airframe: Essential Building Blocks For Scala
• Software

Publications

• see Pulblications
• My DBLP Entry

Articles

• Scala Cookbook http://xerial.org/scala-cookbook (in Japanese)
  • Tutorial of the Scala programming language
• Presentations
• Speaker Deck
• SlideShare

Blogs

• Leo’s Chronicle (in Japanese): http://leoclock.blogspot.com

Curriculum Vitae (CV)

• March 2002 : Bachelor of Science (Department of Information Science, Faculty of Science, University of Tokyo, Japan)
• March 2004 : Master of Information Science and Technology (Department of Computer Science, Graduate School of Information Science and Technology, University of Tokyo, Japan)
• April 2005 - March 2007 : Research fellow of the Japan Society for the Promotion of Science (JSPS)
• March 2007 : Ph.D. (Department of Computer Science, Graduate School of Information Science and Technology, University of Tokyo, Japan)
• April 2007 - February 2014 : Assistant Professor at Morishita Laboratory, Department of Computational Biology, Graduate School of Frontier Sciences, University of Tokyo.
• March 2014 - June 2015 : Software Engineer at Treasure Data, Inc. (Japan)
• July 2015 - July 2018: Software Engineer at Treasure Data, Inc. (US Headquarters)
• July 2018 - April 2023: Principal Software Engineer at Treasure Data
• April 2023 - (current): Senior Principal Software Engineer at Treasure Data

Research Interests

Database Management Systems

• Database systems on the cloud
  • Query and workload optimization
  • Transaction processing
  • Database Storage & Indexes
• Cluster computing platform for Genome Sciences
  • Silk

Genome Sciences

• See also Projects in Genome Sciences
• Biological data management
• Personal genome analysis
• Visualization
  • UTGB (University of Tokyo Genome Browser)
  • Saccharomyces Cerevisiae Morphological Database (SCMD)
  • UTGB Medaka http://utgenome.org/UTGBMedaka
  • MachiBase http://machibase.gi.k.u-tokyo.ac.jp
• Transcription start sites analysis in C. elegans.
  • WormTSS : http://wormtss.utgenome.org/