Mitsuaki Nakasumi

Professor (Faculty of Economics, Komazawa University)

Email: nakasumi(at )komazawa-u(dot)ac(dot)jp

Visiting Scholar ( April 2006 - March 2007, School of Information Technology & Electrical Engineering The University of Queensland)

Profile(in Japanese)

Current teaching:

I can accept Master and Doctor student.

Lecture on Economics Information Systems(seminar)(Gaduate School)

Lecture on Economics Information Systems(A)(Graduate School)

Lecture on Economics Information Systems(B)(Graduate School)

Research Interests

I had worked for IBM Japan Corporation. At the company, I belonged to the division for financial application. I had worked on the development of distributed systems, such as buying/selling stocks. I used to design software and manage project. Through these works, I have been interested in two fields as shown below.

In the field of Financial Engineering, we study the science of circumventing the risks associated with assets and financial instruments and optimizing their profit returns. This includes the researches in the risk management. Since the Internet is exploding, we also focus on the study in E-Commerce, the study of building and maintaining network-based trading systems, the study to protect and maintain those systems from malicious interferences.

As Deregulation and Globalization in financial area become popular, knowledge management systems have become increasingly important in the efforts of corporations to share individuals experiences. Case-based reasoning provides promising techniques for use in the improvement of such systems.

The paper 1 as shown below describes a case-based reasoning (CBR) system that uses Extensible Markup Language (XML) as its case representation language on the World Wide Web. The paper defines the issues of case-based reasoning, then proposes a textual CBR system architecture.
The architecture carries out similarity-based retrieval using XML tags and values associated with these tags. When a textual case base is constructed by many first-level agents, it is natural that cases are incrementally added their definition.
 The proposed system runs on a  relational database management system (RDBMS)  such as Postgresql.

We also study on parallel and distributed processing aiming at high performance computing. Because it is necessary to retrieve cases much faster.
The paper 2 and 3 as shown below describe techniques for high performance. In the paper 3, we explain a Programmable Pipelined Queue to cope with the high data rate of incoming data streams. It can be added easily to general computer system. And we apply the Programmable Pipelined Queue to online string matching.

Recent works

  1. Mitsuaki Nakasumi,"Credit Risk Management System on e-Commerce: Case Based Reasoning", Proceedings of the The Fifth International Conference on Electronic Commerce , Sep. 2003 | acm PORTAL|
  2. Mitsuaki Nakasumi," A Programmable Pipelined Queue for Data Stream Mining", The 2005 International Conference on Internet Computing , June 2005
  3. Mitsuaki Nakasumi, "Programmable Pipelined Queue for Approximate String Matching", Proceedings of The Ninth International Conference on Knowledge-Based Intelligent Information & Engineering Systems (Lecture Notes in AI, Springer), Sep. 2005 | SpringerLink|
  4. Nakasumi, Mitsuaki, Zhou, Xiaofang, "A Case Based Indexing for Location Based Search", The 11th World Multi-Conference on Systemics, Cybernetics and Informatics , July 2007
  5. Mitsuaki Nakasumi,"Decision Making Aid in Mobile Environment by Behavioral Characteristic",The 13th International Conference on Electronic Commerce, August 2011
  6. Mitsuaki Nakasumi,"A Context Aware Decision Making Aid by Behavioral Characteristic",Proceedings of The IEEE International Conference on Service Oriented Computing & Applications,(DOI: 10.1109/SOCA.2014.38) Nov.2014


I've got charge of seminars as a branch of the Faculty of Economics at Komazawa University, Japan. We focus on understanding the role played by e-work in solving social and economic issues, aiming for the realization of a new societal transition model, which leads to the knowledge society. The recent Information Technology Revolution was responsible for great changes on human behavior. In that sense, we emphasize our research on the effects of that revolution on organizational structure, work style and way of living. As to April 2007 seminars are composed of no Doctor and Master student(I will have one foreign student from France), 27 Undergraduate students(including two foreign students from China). For more information regarding our research, please take a look at "Our Research" as shown below.

Our Research

Network Infrastructures in Japan (ex., cheapest ADSL and Mobile network by Softbank) develop a variety of work designs including intra-organizational setups (i.e., telecommuting, mobile work, strategically distributed work groups) and inter-organizational systems for strategic alliances (i.e., EDI or inter-organizational team-based working). It makes any type of distributed working enabled by information technology (including e-commerce, distance education, etc.). A common definition of "e-work" has been evasive because of the evolutionary nature of the term as well as the divergence of features among the different work forms. We currently define "e-work" as follows: "Any type of human activities where time and/or space constraints are relaxed by the use of information technology." The main concern refers to the impacts of this new social model and the analysis of the paths that will lead us to the knowledge society. We believe that by the e-work diffusion the information disclosure will become the norm in the society, the asymmetry of information among people will be significantly reduced and at the business level, a fair competition between organizations will be achieved. Therefore, we focus on two topics:

Career prospects

Our seminar's graduates are in strong demand by Japanese employers. The knowledge and skills gained through top quality programs give our graduates a competitive advantage in the job market. Our foreign graduates have excellent employment such as Trading and Financial companies in Japan(*).

* No guarantee. It depends on your effort.