Short bio

Tatsuya Mori is currently an associate professor at Waseda University, Tokyo, Japan. He received B.E. and M.E. degrees in applied physics, and Ph.D. degree in information science from the Waseda University, in 1997, 1999 and 2005, respectively. He joined NTT corporation in 1999. Since then, he has been engaged in the research of measurement and analysis of networked systems and network security. From Mar 2007 to Mar 2008, he was a visiting researcher at the University of Wisconsin-Madison.


Small tools

  • RPatricia: A Ruby wrapper of Net::Patricia ; Now available as a rubygem -- rpatricia. You might want to use this as a tool for fast lookup of IP addresses/prefixes.
  • sBloomFilter: A fast and simple bloomfilter library for ruby written in C
  • Bayesian Sets with MovieLens Data: A simple implementation of Bayesian Sets written in Ruby. If you are interested in the source code, please let me know.
  • ip2prefix.rb: A ruby script that converts range of ip addresses into prefix notation, i.e., { -} => If you find bugs, please let me know. No warranty.
  • domain2spf.rb: A ruby script that extracts DNS SPF records from a list of domains. The script employs parallel lookups.
  • more to come; stay tuned

Networked System Laboratory
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