CDS関連学術論文 (2008-2)

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Toshio Kodama, Tosiyasu L. Kunii, and Yoichi Seki, "A Condition Formula Search", Proceedings of 2008 SIWN Congress (22-24 July 2008, Glasgow, UK), and also in International Journal of Communications of The Systemics and Informatics World Network (SIWN), Co-Sponsored by IEEE Systems, Man, and Cybernetics Society, pp.39-44, 2008, The Systemics and Informatics World Network (SIWN), UK.

Cyberworlds are distributed systems where data and their dependencies are constantly changing and evolving. In such business application systems, combinatorial explosion happens because you must modify schemas and application programs whenever schemas change, if you use existing techniques. To solve the problem, we have developed a data processing system called Cellular Data System (CDS) based on the cellular model, which is considered the most appropriate to model cyberworlds, using an algebra system called Formula Expression. In this paper, we design and implement a condition formula and its processing maps as an important function in CDS. A condition formula search is a very effective measure when you want to analyze data in cyberworlds without losing consistency in the entire system, since you can search for the data you want without changing application programs, if you employ a condition formula search. That is, a condition formula search is an analysis measure for the worlds under the assumption of frequent changes of schemas. Therefore, if you use CDS, the development process is completely different from the general one, since we do not have to design business specification clearly at requirements analysis. In addition, we demonstrate the effectiveness of a condition formula search by taking up an example of a photo file management system.