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| 1 | ESTIMATION OF CHAIN REACTION BANKRUPTCY STRUCTURE BY CHANCE DISCOVERY METHO—WITH TIME ORDER METHOD AND DIRECTED KEYGRAPH显示文摘Chain reaction bankruptcy is regarded as common phenomenon and its effect is to be taken into account when credit risk portfolio is analyzed.But consideration and modeling of its effect leave much room for improvement.That is mainly because method for grasping relations among companies with limited data is underdeveloped.In this article,chance discovery method is applied to estimate industrial relations that are to include companies' relations that transmit chain reaction of bankruptcy. Time order method and directed KeyGraph are newly introduced to distinguish and express the time order among defaults that is essential information for the analysis of chain reaction bankruptcy.The steps for the data analysis are introduced and result of example analysis with default data in Kyushu, Japan,2005 is presented.The structure estimated by the new method is compared with the structure of actual account receivable holders of bankrupted companies for evaluation. | Shinichi GODA Yukio OHSAWA | 2007 | Journal of Systems Science and Systems Engineering2007，16，4： | 3 |
| 2 | DATA CRYSTALLIZATION APPLIED FOR DESIGNING NEW PRODUCTS显示文摘它仅仅是能在数据被存储的真实世界的可见部分。为如此的不完全、组织病的数据,结晶的数据瞄准 at presenting 在包括 unobservable 事件的事件之中的隐藏的结构。,这被数据结晶化认识到哑巴项目,相应于 unobservable 事件的潜在的存在,被插入到给定的数据。有可见事件的这些哑巴项目和他们的关系被 applyingKeyGraph 与哑巴项目设想到数据,象灰尘涉及水分子的结晶化的形成的雪的结晶化一样。为调节要设想的结构的颗粒度水平,数据结晶化的工具与人在真实世界上理解重要情形的过程是综合的。这个基本方法被期望为机会发现的以前的方法带人到成功的决策的各种各样的真实世界领域适用。在这篇论文,我们在一个真实公司与 human-interactiveannealing (DCHA ) 把数据结晶化用于产品的设计。结果显示出它的效果到工业决策。 | Kenichi HORIE Yoshiharu MAENO Yukio OHSAWA | 2007 | Journal of Systems Science and Systems Engineering2007，16，1： | 3 |
| 3 | Innovation support system for creative product design based on chance discovery显示文摘 | Hao Wang Yukio Ohsawa Yoko Nishihara | 2011 | Expert Systems With Applications2011，，5： | 1 |
| 4 | Idea discovery: A scenario-based systematic approach for decision making in market innovation显示文摘 | Hao Wang Yukio Ohsawa | 2013 | Expert Systems With Applications2013，，2： | 1 |
| 5 | Influence diffusion model in text-based communication显示文摘 | MATSUMURA NAOHIRO OHSAWA YUKIO ISHIZUKA MIT- SURU | 2002 | Transactions of the Japanese society for artificial intelligence2002，7，3： | 1 |
| 6 | Hepatoid adenocarcinoma in the lung显示文摘 | Yasufumi Hayashi Yoshinori Takanashi Hiroyuki Ohsawa Haruhiko Ishii Yukio Nakatani | 2002 | Lung Cancer2002，，2： | 1 |
| 7 | Innovation support system for creative product design based on chance discovery显示文摘 | Hao Wang Yukio Ohsawa Yoko Nishihara | 2011 | Expert Systems With Applications2011，，5： | 1 |
| 8 | KeyGraph as Risk Explorer from Earthquake-Sequence显示文摘 | Yukio Ohsawa | 2002 | Journal of Contingencies and Crisis Management2002，10，3： | 1 |
| 9 | Discovering Emerg ing Topicsfrom WWW显示文摘 | Matsumur Naohiro Matsumura Yutaka Matsuo Yukio Ohsawa | 2002 | Journal of Contingencies and Crisis Management2002，，2： | 1 |
| 10 | Influence diffusion model in text-based eomumunication 显示文摘 | Matsumura Naohi Ohsawa Yukio Ishizuka Mitsuru | 2002 | Transactions of the Japanese Society for Artificial Intelligence2002，173，25： | 1 |
| 11 | A fast construction method for spatial index GBD-tree显示文摘This paper proposes a fast initial construction method of the GBD-tree. The GDB tree has proper characteristics for management of large amount of 2 or 3 dimensional data. However, the GBD-tree needs long initial construction time by originally proposed one-by-one insertion method. A fast insertion method has been proposed, but it needs large size of buffer capable to hold index information of all entries. The paper proposes another fast initial construction method. The method requires only limited size of work space (buffer). The experimental results show the initial construction time reduces into a third or a quarter of the one-by-one insertion method. The memory efficiency and retrieval efficiency are also improved than the one-by-one insertion method. | Yukio Negishi Yutaka Ohsawa Satoshi Takazawa | 2007 | 重庆邮电大学学报(自然科学版)2007，19，3： | 0 |
| 12 | Interaction Dynamics in AEC Global Teamwork显示文摘Architecture, engineering, and construction (AEC) global project teamwork is communication intensive and relies heavily on synchronous and asynchronous information and collaboration technologies (ICT). We explore in this paper how an asynchronous ICT, called ThinkTank, reshaped the work practice of design-construction global teams, and how the interaction with this ICT reshaped the purpose and benefits of its use. ThinkTank is a web-based asynchronous collaboration and discussion forum. We introduce the influence diffusion model (IDM) that formalizes the process of identifying the influence of people, messages, and terms mathematically. Discovering who the influence leaders in project teams are can be beneficial and critical from a corporate management perspective, since they can guide or motivate the team towards successful actions and outcomes. We present the ThinkTank-IDM integrated system and its validation with a testbed of 53 AEC global team project archived in ThinkTank over 8 years. | Renate Fruchter Shubashri Swaminathan Naohiro Matsumura Yukio Ohsawa | 2008 | Tsinghua Science and Technology2008，13，S1： | 0 |
| 13 | PREDICTING RELEVANT EMPTY SPOTS IN SOCIAL INTERACTION显示文摘一个空点指能在社会相互作用的记录被发现的一个空 hard-to-fill 空格,并且是在内在的社会网络的人的线索不出现在记录。这贡献处理一个问题在社会相互作用预言相关的空点。同类、不同类的网络作为位于社会相互作用下面的一个模型被学习。一个启发式的预言者功能方法表现为一个新方法处理这个问题。模拟实验在一个同类的网络上被表明。在市场篮子形式的一个测试数据集合从模仿的通讯被产生。预言空点的精确被计算表明介绍方法的表演。 | Yoshiharu MAENO Yukio OHSAWA | 2008 | Journal of Systems Science & Complexity2008，21，2： | 0 |
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