Kenichiro Ishii's research while affiliated with Nagoya University and other places
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Publications (11)
Social media, which support communication on the Internet, continue to spread rapidly. SNSs and micro-blogs are typical services. This research proposes methods for efficient information sharing through social media, especially intra-firm systems for information sharing of research or expertise. In this research, a simple model of social media is p...
抄録
The concept of the ``wisdom of crowds'' has attracted attention for finding new insights by appropriately processing the large amount of information possessed by crowds. A prediction market is one estimating method that uses the mechanisms of financial markets such as stock or exchange markets to realize the ``wisdom of crowds''. In this study,...
The financial markets are fluctuating consistently. Therefore, it is
difficult to analyze the financial market based on the same theory,
without depending on the state of the market. So we use the concept
ofmarket condition change. To estimate the points when the market change
occurred in a real market is effective for market analysis. Thus, in
thi...
Recently, with the advance of information technologies, the amount of available information has increased exponentially. This has a great influence on individual acts because information is quite important for decision making and value judgment. In this paper, we propose a model of information diffusion considering information diversification and i...
In this paper, we proposed a statistical utterance selection method for dialogue agents by applying a machine learning algorithm.
We defined statistical candidate utterance selection as a question that automatically selects an appropriate utterance from
speech collections prepared in advance as responses. To realize automatic utterance evaluation,...
A variety of knowledge sharing methods have been proposed based on experience and precedents. However, the effects of these methods have never been quantitatively investigated. This study proposes a knowledge sharing model in organizations to analyze the effect of knowledge management. Knowledge sharing processes are modeled and simulated using a m...
Recently, computerized dialogue systems have been actively investigated and used in various fields. In order to realize a practical system, the performance of the system should be evaluated quantitatively. An objective and quantitative evaluation method for task-oriented dialogue systems, such as reservation services, has already been established;...
In the education field, the management of student relation-ships is one of the most important duties of teachers. Such management usually reflects the teacher's abilities and experiences. The purpose of this study is to clarify management methods to realize appropriate classroom community structures. In this study, we simulated a community-forming...
The original publication is available at JAIST Press http://www.jaist.ac.jp/library/jaist-press/index.html IFSR 2005 : Proceedings of the First World Congress of the International Federation for Systems Research : The New Roles of Systems Sciences For a Knowledge-based Society : Nov. 14-17, 2023, Kobe, Japan Symposium 2, Session 2 : Creation of Age...
Citations
... This is well known from a practical point of view. Some previous studies use a stock full-board dataset to forecast returns or volatility in the Japanese market (Toriumi et al. 2012). ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/273554361024513-1442231850352_Q64/Fujio-Toriumi.jpg)
... N. Gilbert et al. modeled product development in the organizations [11] and the structures of academic science [12]. Y. Fujita et al. studied the roles of innovators in information distribution using simulations [13]. Other studies modeled SNSs [14], [15] to simulate human behaviors. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/298093129027596-1448082348154_Q64/Yuichi-Washida.jpg)
![[object Object]](https://i1.rgstatic.net/ii/profile.image/943554360782850-1601972298618_Q64/Kazuhiro-Ueda-2.jpg)
... Then, "Socialization, Externalization, Combination and Internalization model" (SECI model) [2], which was proposed in middle of 1990s, triggered for growing interest in "knowledge management" to deal with loss of knowledge with retirements of the core generation in Japanese industry. Fujita et al [5] studied the effectiveness of knowledge management, and Takahashi et al [6] studied real applications. In knowledge management system, knowledge has been accumulated enormously, however, is often hard to retrieve. ...
... Various works studied the incentives and conditions that favor participation in In the context of social networks, Irena at al. [3] study which are the most important factors for customer engagement in the domain of a Facebook brand page. Yogo et al. study incentives that stimulate activities in social networking services [22], while [19] examine the conditions that encourage users to participate more intensively in social networking. [6] studied the trade-off between the cost represented by the concern about personal data privacy and the incentive of sharing personal facts, records or content. ...
... Shirai trained ergodic HMMs from the data of task-oriented spoken dialogues to analyze the functions of audio-visual information in dialogue [6]. Dialogues with less task restriction have also been modeled using HMMs; Isomura et al. used HMMs to model interview-like conversations and used the HMMs to evaluate the naturalness of conversations [7], and Meguro et al. used HMMs to analyze counseling-like listening-oriented dialogues for the purpose of building listening agents [8]. Engelbrecht et al., and Higashinaka et al., both trained HMMs that can predict turnwise user satisfaction transitions within a dialogue [9], [10]. ...
... Toriumi Fujio et al. [1], aims at proving that grouping in a classroom community effectively decreases isolation and loneliness amongst students. Heider's balance theory is used to analyze the network. ...
