Preferred Infrastructure Inc.

Corporate Profile

Japanese Page here

Overview

• Company Name:  Preferred Infrastructure Inc,
• Founded: March 2006
• CEO:  Toru Nishikawa
• Number of Employees: 28
• Location: 2-40-1 Hongo, Tokyo, Japan
  (near Hongo Campus, University of Tokyo)
• Email:  info@preferred.jp
• Business: Software Development & Licensing
  Search Engine & Recommendation System

Our Goals

• To put the cutting-edge research results in the academic world to practical use as soon as possible.
• To challenge the most difficult problems and provide solutions to them.

Members

• CEO: Toru Nishikawa Computer Science,
  University of Tokyo ACM International Collegiate Programming Contest 2006 19th place
• VP: Daisuke Okanohara
  Ph.D Computer Science, University of Tokyo
  Exploratory IT Human Resources Program sponsored by IPA Japan (2002 – 2005)
• Many of other members have also achieved outstanding results at several programming contests.

Technologies

• Information Retrieval
• Recommendation
• Natural Language Processing
• Machine Learning
• Data Compression
• Database System
• Very Large Distributed System
• Bioinformatics

Main Customers

• Nikkei BP
• Aasahi Shimbun
• Impress Business Media Corporation
• Japan Broadcasting Corporation (NHK, Nihon Housou Kyokai)
• Dentsu
• ipros
• NII
• FROUTE
• Hatena

Products

Sedue – Comprehensive search platform which combines search and recommendation technologies

• Supports many types of indexing methods, and ranking methods
• Linear Scale-Up
  Verified up to 128 threads on a Sun box
• Easy Scale-Out
  Indexer and searcher nodes can be added without stopping the system.
• High Reliability
• Customizable Ranking Feature
• Applications: Web Search, Document Search, Enterprise Search, Text Mining

Jubatus – Distributed online machine learning framework

• Online multi-class/binary classification
• Online linear regression
• Online recommendation with inverted index or LSH (locality sensitive hash)
• Framework for online machine learning with fault tolerance