Yuu Nakajima

Yuu Nakajima
Toho University | Toho-U · Department of Information Science

Ph.D. (Informatics)

About

31
Publications
3,087
Reads
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203
Citations
Additional affiliations
April 2018 - present
Toho University
Position
  • Professor (Associate)
April 2013 - March 2018
Toho University
Position
  • Lecturer
April 2009 - March 2013
Kyoto University
Position
  • Research Assistant

Publications

Publications (31)
Conference Paper
The Walk Rally application is a mobile application that encourages users to walk around an area using mobile terminals. Several Walk Rally applications have been developed for use in various situations. However, depending on the area and the purpose of use, the information presented in the application and the functions required for it are different...
Conference Paper
We investigated whether shoutengai, old shopping districts in Japan, can be revitalized by solving the disparity problem in the number of customers among shoutengai according to their location and by solving the problem of inequality in popularity among the stores in a shoutengai. We developed the "store appeal value", which is unique index of show...
Chapter
Service-oriented computing environments (SoCEs) such as the Language Grid can be regarded as the synthesis of their individual services. However, to make sustainable SoCEs, the user will want assurance that the billing structure is valid of and apportionment of cost burden among users is fair. To analyze the factors involved, we conduct donation an...
Conference Paper
At events and sightseeing spots, congestion can be a factor that lowers customer satisfaction, so there is need for methods that mitigate congestion. Currently, there are methods for mitigating congestion such as changing the layout of an event and restricting customer behavior. However, there are problems in that it is difficult to reduce congesti...
Chapter
Service has been considered as value co-creation through the cooperation of service providers and customers. This paper, however, focuses on service design in problem fields where complex issues exist among various stakeholders, where identifying service providers and customers is not a simple process. In other words, we focus on a very early stage...
Conference Paper
Full-text available
It is very difficult for students who do not have a business career or experience to understand business models or structures. In addition, business models from the student viewpoint remain largely within a model-based understanding, and students do not have practical opportunities to create an image of business uncertainty. Our goal is to provide...
Conference Paper
Full-text available
We discuss here the complementarity effect of rewriting services in a language-translation Web service work-flow. The communication mediated by the machine translation service includes mistranslations and changed meanings, which are caused by the quality of the machine translation. To reduce these problems, we propose service reallocation and assem...
Chapter
How can we predict ICT-driven innovations that will emerge in society and daily life? Multiagent simulations can be used to predict the changes in society and daily life caused by human interaction with new technologies. Multiagent simulations have become increasingly popular as a type of micro-simulation that can represent diversity and heterogene...
Conference Paper
Full-text available
Multiagent-based simulations are regarded as an useful technology for analyzing complex social systems and have been applied to various problems. Tackling the problems of a city involves various levels of abstraction and various target domains. Different types of human behaviors are studied separately by specialists in their respective domains. We...
Article
As it is getting easier to obtain reams of data on human behavior via ubiquitous devices, it is becoming obvious that we must work on two conflicting research directions for realizing multiagent-based social simulations; creating large-scale simulations and elaborating fine-scale human behavior models. The challenge in this paper is to achieve mass...
Article
Full-text available
Multiagent-based simulation (MABS) is a very active interdisciplinary area bridging multiagent research and social science. The key technology to conduct truly useful MABS is agent modeling for reproducing realistic behaviors. In order to make agent models realistic, it seems natural to learn from human behavior in the real world. The challenge pre...
Conference Paper
Full-text available
Multiagent-based simulations are regarded as a useful technology for analyzing complex social systems; for example, traffic in a city. Traffic in a city has various aspects such as route planning on the road network and driving operations on a certain road. Both types of human behavior are being studied separately by specialists in their respective...
Conference Paper
Full-text available
Multiagent-based simulations are a key part of several research fields. Multiagent-based simulations yield multiagent societies that well reproduce human societies, and so are seen as an excellent tool for analyzing the real world. A multiagent-based simulation allows crowd behavior to emerge through interactions among agents where each agent is af...
Conference Paper
Full-text available
The challenge presented in this paper is to obtain a human-like individual behavior model by using participatory modeling technology in the traffic domain. We show a methodology that can elicit prior knowledge for explaining human driving behavior in specific environments, and then construct a driving behavior model based on of a set of prior knowl...
Thesis
Full-text available
Kyoto University (京都大学) 0048 新制・課程博士 博士(情報学) 甲第14767号 情博第342号 新制/情報/64 UT51-2009-D479 2009-03-23 京都大学大学院情報学研究科社会情報学専攻 (主査)教授 石田 亨, 教授 喜多 一, 教授 多々納 裕一 学位規則第4条第1項該当
Chapter
Full-text available
To design socially embedded systems, this paper proposes to learn from human behavior in participatory simulation, where scenario-guided agents and human-controlled avatars coexist in a shared virtual space and jointly perform simulations. To create agent models incrementally, we use machine learning technologies. We characterize agents by using a...
Conference Paper
Full-text available
Using ubiquitous devices such as multifunctional cellular phones and PDAs, we can build a large-scale navigation system for evacuation in the metropolis. Although current navigation systems simply broadcast the same instructions over a large area, the required function is to provide individ- ualized instructions to each user. Our approach is to bui...
Conference Paper
Full-text available
Navigation services for pedestrians are spreading in recent years. Our approach to provide personal navigation is to build a multi-agent system that assigns one guiding agent to each human. This paper attempts to demonstrate a design implication of the guiding agent. In the navigation experiment where a pedestrian using a map on a GPS-capable cellu...
Conference Paper
Full-text available
We propose how to acquire driver’s individual operation models using the three-dimensional driving simulator in order to implement distinct personalities on each agent. In this paper, operation models are defined as sets of prioritized operation rules, each of which consists of the world as observed by a driver and his/her next operation according...
Conference Paper
Full-text available
To test large scale socially embedded systems, this paper proposes a multiagent-based participatory design that consists of two steps; 1) participatory simulation, where scenario-guided agents and human-controlled avatars coexist in a shared virtual space and jointly perform simulations, and the extension of the participatory simulation into the 2)...
Conference Paper
Full-text available
The ubiquitous environment enables us to build systems that provide individual users with personalized navigation services in cities. In developing such a system, it is necessary to estimate the influence and the movement of its users and to get feedback. However, it is difficult to perform tests on such a system given the large number of human sub...
Article
Full-text available
The spread of the ubiquitous computing environment en-ables the realization of social systems with large scale. Mul-tiagent simulations are applied to test such large systems that inevitably include humans as its parts. To develop such simulation systems for large-scale social systems, it is neces-sary for experts of application domains and of comp...
Conference Paper
Full-text available
Making a truly useful massively multi-agent system is difficult since the actions of the full ensemble of agents can- not be controlled by designing just one agent. It is critical to control all the agents by using protocols that describe the interaction of agents and the environment in a top-down approach. We introduce a system that uses interacti...

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Projects

Projects (5)
Project
City Simulation and Human Behavior Modeling
Project
Intercultural Collaboration and Service Computing
Project
Project of Mobile Navigation System