Toramatsu Shintani

• Doctor of Engineering
• Professor at Gifu Shotoku Gakuen University

Assistive technology is a prerequisite for making a high-quality lecture video. It is therefore imperative to edit the lecture video after recording. In this study, we aim to reduce the cumbersome task of lecture video editing by developing a system that enables the addition of visual effects in the video while recording. In particular, we use augm...

The formulation of good academic paper titles in English is challenging for intermediate English authors (particularly students). This is because such authors are not aware of the type of titles that are generally in use. We aim to realize a support system for formulating more effective English titles for intermediate English and beginner authors....

It is important to analyze the reputation or demands for a regional event, such as a school festival. In our work, we use sentiment polarity classification in order to coordinate regional event reputation. We proposed sentiment polarity classification based on bag-of-words models in the previous works. To get over the traditional models, we propose...

Conducting presentations with bi-directional communication requires extended presentation systems, e.g., having sophisticated expressions and gathering real-time feedback. We aim to develop an interactive presentation system to enhance presentations with bi-directional communication during presentations. We developed a hybrid interactive presentati...

It is important to analyze the reputation or demands for a local event, such as a school festival. The aim of this research is to develop a system that enables its users to collect and to analyze local event information from social media. In this paper, we have shown the over view and described the implementation of the proposed system. Our system...

We propose an extended Web displaying system based on multiple tablet devices to help users to conduct collaborative works anywhere without a large display. Users can use multiple tablet devices as a pseudo mobile large display on demand by using our system. For example, users can make discussions by using Web applications anywhere. We present mana...

A remote elder care is important but it is difficult to support their correct dosing. We developed a remote elder care support system, which enables users to synchronize handwriting, and photos in real-time on ordinal smartphones and tablet devices. However, a caregiver was hard to check care receiver's dosing timely. And, it is undesirable to...

To address social issues about the sustainability of local societies, inter-organizational collaboration in public sphere is important. Although conventional social networking services (SNSs) have recently been used for public collaboration, the SNSs are not suitable to look for potential collaborators because the conventional SNSs emphasize recenc...

Attention control of audience is required for suc-cessful presentations, therefore giving a presentation with im-mediate reaction, called reactive presentation, to unexpected changes in the context given by the audience is important. Examples of functions for the reactive presentation are shape animation effects on slides and slide transition effec...

We developed a climbing plan sharing system. While climbing plan documents that have been created in Microsoft Word or PDF format have a lot of climbing information, a computer cannot understand climbing information efficiently because the climbing information is written in a natural language. We developed a system that converts a climbing plan doc...

Civic hackathon is a participatory event for prototyping of innovative services through collaboration between citizens and engineers towards addressing social issues. Although continuous contributions are needed for improving the prototypes and for applying them to social issues, participants frequently stop contributions after the hackathon due to...

Regional governments are looking for ways to address public concerns more efficiently by utilizing eGovernment systems. The complex environment presents problems for situational awareness and cooperation in public spheres. Current solutions are either lacking in structuring the information or do not support collaboration or discovery. We addressed...

We present a computational model of tonality cognition derived from physical and cognitive principles on the frequency ratios of consonant intervals. The proposed model, which we call the Prime Factor-based Generalized Tonnetz (PFG Tonnetz), is based on the Prime Factor Representation of frequency ratios and can be regarded as a generalization of t...

Remote elder care is important but it is difficult to keep a track of a patient's medication. We developed a remote elder care support system that enables users to synchronize handwriting, and photos in real-time on ordinal smartphones and tablet devices. However, it remained difficult for caregivers to remotely check the timeliness of the patient'...

In this paper, we developed a climbing plan sharing system. While climbing plan documents created in Microsoft Word or PDF formats contain necessary climbing information, a computer cannot understand such information because the information is written in a natural language. Such climbing plan documents are tedious to write, but are typically requir...

Forming effective coalitions is a major issue in multiagent systems. The existing coalition structure generation (CSG) algorithms fail to determine the structure 's robustness because agent withdrawals cannot be identified in all the coalition structures. The coalition lattice, which was proposed in a previous study, provides an evaluation of the c...

To address public concerns that threat the sustain-ability of local societies, supporting public participation by shar-ing the background context behind these concerns is essentially important. We designed a SOCIA ontology, which was a linked data model, for sharing context behind local concerns with two approaches: (1) structuring Web news article...

Forming effective coalitions is a major problem in multiagent systems. Coalition structure generation (CSG) involves partitioning a set of agents into teams, i.e. coalitions. The set of coalitions is a coalition structure. In the context of the CSG research, our goal is forming the coalition structure that maximizes the social surplus. The social s...

We implemented a collaborative web presentation system for realizing a reactive presentation. The system consists of a personal computer (PC) for a presenter and PCs (or tablet devices) for audience members. The presenter uses the existing presentation software PowerPoint. The audience members use existing Web browsers. The system is used for worki...

A keyword-based query is not sufficient for retrieving presentations. We assume that episodic memories about authoring slides and giving a presentation can be used for query because users easily recall and recognize slides associated with such memories. In this study, we present slide retrieval based on research episode networks that are a network...

We propose a Generational Layered (GL) canvas mechanism to reduce delays of synchronization for collaborative Web applications. The delays consist of network delays and drawing delays. The network delays are well-argued topic by various researches. We focus on the drawing delays, which are a primary bottleneck of synchronization of objects on canva...

An interactive presentation is intended to support lecturers that need to enhance presentation expressions and gather real-time feedback from audiences while delivering their presentations. Our objective is to improve the efficiency of bi-directional communication between a lecturer and a large audience in presentations using a real-time questionna...

Inter-organizational collaboration in the public sphere is essentially important to address sustainability problems in contemporary regional societies. To facilitate public collaboration, we are developing a Web application for sharing public issues and their solutions as public goals. Since participating in abstract or general goals is more diffic...

Social network channels are used to organise public goals, but unstructured conversation presents a challenge for identifying groups focusing on similar issues. To address the problem, we implemented a web system for creating goals from public issues and for discovery of similar goals. We designed SOCIA ontology to structure information as hierarch...

We propose a Drawing-Frequency based Layered (DFL) Canvas approach to reduce a synchronization delay in collaborative web applications. The synchronization delay consists of a network delay and a drawing delay. The network delay is well-argued topic by various researches. We focus on the drawing delay, which is a primary bottleneck of Canvas object...

Presentations are crucial components of the knowledge sharing in organizations with the purpose of facilitating organizational acquisition and invention. Current web applications enabling users to collaboratively create presentation-like web contents and locate the created contents on a web page for knowledge sharing are insufficiently supportive o...

We realized a system that provides manipulations of slide objects to enable users to give a reactive presentation. The "reactive presentation" means a presentation that can immediately react an unexpected context change. A presenter requires applying the presentation to the unexpected context such as the state of audiences, unexpected questions and...

The importance of public involvement in Japanese regional societies is increasing because they currently face complicated and ongoing social issues due to the post-maturity stage of these societies. Since citizens who have beneficial awareness or knowledge are not always experts on relevant social issues, assessing and sharing public concerns are n...

In recent years, use of the social networking/micro-blogging service Twitter has spread widely. Twitter users constantly post tweets and connect with an often huge number of other users. We need to optimize viewing a lot of tweets. For users who browse infrequently, many unread tweets appear on their timeline, making it difficult to view. It is als...

We are developing a collaborative web application for editing PDF documents using web browsers. Our system enables users to edit the same document in real-time. Users can share annotations on papers in real-time on web browsers. One of the advantages of our system is very high availability. Users only need to have their own web browsers. To improve...

We implemented a synchronization module for tablet devices to support collaborative works based on Web contents. The module enables multiple tablet devices to display web contents as one large display. In this paper, we show the implementation of the module. Pair swipe operations are adopted to determine the position of the device and the UDP is us...

We have been developing Web Flexible Editing (WFE), a system for Real-Time Collaborative Editing (RTCE) for existing Web pages. We propose three transformation approaches to enable several users to modify existing Web pages simultaneously on their browsers, while modified contents are reflected to other users in real-time. The three approaches (a s...

An RDF/N3 dataset of public goals about revitalization from the Great East Japan Earthquake extracted from Web news articles. This linked open dataset won the 2nd Prize of Dataset Track, Linked Open Data Challenge Japan 2013 (http://lod.sfc.keio.ac.jp/blog/?p=2074 ). SPARQL Endpoint: http://data.open-opinion.org/socia-sparql.html RDF/XML is also a...

In this research, we have developed a Smart Signage System for tablet devices as a new approach for digital signage applications. Tablets can be used in a smart way to suitably display and use interactive contents, and there is a need for research on how to make the most effective use of a large number of tablets. In this study, we consider the cha...

We showed WFE, a real-time collaborative editing (RTCE) mechanism, in which a group of people can edit a web page on a web browser while members of the group share editing contents in real-time. In addition, we proposed applying WFE to a cloud computing environment, and we call the applied application WFE-S. The aim is to improve the system to have...

We are developing an eParticipation web platform based on Linked Open Data that targets regional communities in Japan. To in-crease transparency and public participation, we aim to utilize web con-tents related to target regions for sharing public concerns among citizens, government officials, and experts. We have designed a Linked Open Data set ca...

We introduce an exploratory event mining system in social media. A system deals with user's interests by making use of interaction between user input and system output. The system presents related events in the form of graph structures called "event graphs". Event graphs based on users' interests are produced by iterating over event presentation an...

Importance of concern assessment has been increased in Japanese regional communities. We have developed an e-Participation web platform based on a Linked Open Data set called SOCIA (Social Opinions and Concerns for Ideal Argumentation). To sophisticate text mining technologies for supporting concern assessment, building a corpus of public concerns...

We are developing WFE, a system for Real-Time Collaborative Editing (RTCE) for existing Web pages. We aim to enable several users to perform simultaneous modifications on existing Web pages in their browsers, while modified contents are reflected to other users in real-time. In this paper, we present the application of WFE to a cloud computing envi...

We propose a differential synchronization mechanism for Real-Time Collaborative Editing. We are developing WFE, a system for Real-Time Collaborative Editing for existing Web pages. We need to improve the response time to reduce conflicts among multiple users. We develop a DOM tree based differential updating mechanism to minimize update information...

In this paper, we present an e-Participation Web system for various platforms and mobile phones, based on linked open data, classification and clustering. The system aims at supporting citizen e-Participation in ongoing regional debates by gathering and openly publishing news and opinions from the Web for easy comprehension and commenting. Our stud...

In order to be able to use the advantage of public corpuses such as Wikipedia to address problems of classification by hierarchically structured topics with a large amount of classes, we propose an improvement of Naive Bayes based text classification algorithms which we call Semantically-Aware Hierarchical Balancing. SAHB addresses two issues in th...

In this paper, we present an architecture and sample implementation of a system which allows us to push latest up-to-date related contents to any Web news article or page in real-time. The architecture makes use of page Agents which recommend the contents and are persistent as well as synchronized over all page instances in browsers. The Agents are...

We propose a system to offer better understanding of news articles on the Web by arranging events. To understand an article, it is necessary to consider background knowledge, details of the article, and meaning of the words. We aim to provide with a better understanding of news articles according to news articles' background by event arrangement. A...

Consensus is the desired result in many argu-mentative discourses such as negotiations, public debates, and goal-oriented forums. However, due to the fact that usually people are poor arguers, a support of argumentation is necessary. Web-2 provides means for the on-line discussions which have their characteristic features. In our paper we study the...

We propose a fake web prevention system based on a push delivery system implemented with a mobile agent on the Web. Web content can be easily replicated using a crawler that automatically retrieves all contents of visited web sites. A rigger reuses content collected by crawlers without authorization. Our fake web prevention system is based on chann...

This paper describes an analysis of the recency effect of terms appearing in a corpus of meeting transcripts in Japanese. The aim of the study is to improve a method for tracking dynamic topics that have been developed for visualizing a long meeting transcript. The recency effect observed from the appearance of terms in discourse context, the coref...

We propose a public debate support system through iterative alternation of face-to-face meetings and Web-based debates. Web-based facilitation of public debates is suitable for complementary question and answering when the debate in face-to-face meetings is insufficient due to time restriction. Since transcripts of public meetings tend to be length...

We propose a new event arrangement system for Web news browsing based on analyzing past news articles related to the browsing-targeted article. Since relevant events are important for understanding news articles, we propose an event arrangement system based on making a connection between the relevant events and providing sequences of those events....

Clarifying characteristics of appropriate argumentative discourse is important for developing computer assisted argumentation systems. We describe the analysis of argumentative discourse structure on the basis of Rhetorical Structure Theory in order to clarify what kind of argumentative discourse structure should be considered appropriate. We thin...

In this paper, we present a multi-agent architecture which can reduce user’s load when searching for affiliates in a network of community websites. We give a precise definition of the environment, networks of community websites. The system’s architecture is designed with scalability and easy interfacing for brokers and matchmakers in mind. We have...

This paper describes a dynamic rearrangement mechanism of Web page layouts. The aim of this research is to provide webmasters or administrators with a means of determining easily the best suited content layout of their Web pages in a short period of time by automatically testing and relocating the contents with a trend of user actions. We will beco...

We propose a web annotation system which automatically generates bidirectional links between annotation stickies referencing similar information and subsequently categorizes them. Our system has the functionality of stickies to web pages. The stickies allow for important parts of a web page which contains large amounts of data to be highlighted. Su...

This paper presents novel methods for support for browsing a long meeting record towards supporting public involvement. Facilitating public involvement in the consensus building process for community development needs a lot of effort and time for sharing context and concerns among citizens and stakeholders. A record of public meeting often becomes...

We propose a web annotation system that has functionalities of stickies on web pages and bidirectional links between the stickies. The stickies allow for important parts of a web page which contains large amounts of data to be highlighted. We have implemented a positioning method based on the Document Object Model (DOM), as well as a new method for...

ABSTRACT We propose a method,of classifying XML documents,and extract- ing XML schema,from XML by inductive inference based on con- straint logic programming.,The goal of this work is to type a large collection of XML approximately,but efficiently. This can also pro- cess XML code written in a different schema,or even code which is schema-less. Our...

In recent years, the standardization of news management and transmission format has advanced, and NewsML (News Markup Language) has appeared. NewsML is a format which was decided by the IPTC (International Press Telecommunications Council). In this paper, we propose a next generation news management system based on an environment in which news mana...

We propose a web annotation system which adds the func- tionality of stickies to web pages and creates bidirectional links between the stickies. The stickies allow for important parts of a web page which contains large amounts of data to be highlighted. We have implemented a positioning method based on the Document Object Model (DOM), as well as a...

In this paper, we develop a new method for finding an optimal biddingstrategy in sequential auctions, using a dynamic programming technique. Theexisting method assumes that the utility of a user is represented in anadditive form. Thus, the remaining endowment of money must be explicitlyrepresented in each state, and the calculation of the optimal b...

Advances in the Internet have enabled the dissemination of many types of e-learning in assisted education. We propose a collaborative learning support system (CLSS) for studying in the classroom and off-campus. Users study cultural and historical sites through a field trip using our system and cellphones. We report the results of learning based on...

False-name bids and shill bids pose an emerging problem for auctions. To solve the problem, we propose a new method for finding shill bid in order to avoid them. Our algorithm can judge whether there might be a shill bid from the results of the bidding procedure. Further, in this paper, we propose an improved method, which can dramatically reduce t...

We describe an XML database system that is based on constraint logic programming. The system stores XML as constraint logic programming, which is based on meaning of XML data and XML pattern structures. The constraint logic programming aim to become the ontology in the database. The system can process numerical computation constraints of XML elemen...

In this paper, we present a support method of economic learning system based on qualitative simulation. We employ qualitative simulations because this lets the learners can understand the conceptual principles in economic dynamics. In existing learning system with qualitative simulation, users are not supported effectively in building qualitative s...

This paper presents a method for discovering and detecting shill bids in combinatorial auctions. The Vickrey-Clarke-Groves Mechanism is one of the most important combinatorial auctions because it can satisfy the strategy-proof property, individual rationality, and Pareto efficiency, that is, it is the only mechanism that simultaneously satisfies th...

This paper presents a method for discovering and detecting shill bids in combinatorial auctions. Combinatorial auctions have been studied very widely. The Generalized Vickrey Auction (GVA) is one of the most important combinatorial auctions because it can satisfy the strategy-proof property and Pareto efficiency. As Yokoo et al. pointed out, false-...

Summary In this paper, we propose an intelligent notification of a new e-mail, and describe an implementation of the notification system. There are two ways to read e-mails by using a computer. One way is a mail system on a user's personal computer. The other way is a web mail system on a web server. Using a web mail system is better for users beca...

This paper is to examine interactive integrative learning support system for elementary school students. Our Web-based system enables a group of some 5 students and teachers to learn interactively by collaboratively creating outcome (i.e. Web pages) through a shared Web site. Three main functions of the system are followings;(1)To build a shared We...

Recently, the World Wide Web (WWW) has been attracting much attention as the predominant method of sharing information using multimedia contents. However, when users want to provide multimedia contents on the Web, they must learn how to use authoring software or how to write HTML documents. In this paper, we propose a Web information-sharing system...

Volume discount is seen as an effective form of electronic commerce and a promising field for applying agent technologies. In current volume discount mechanisms, items are not allocated efficiently to buyers. Namely, social surplus is not maximum in existing volume discount schemes. To solve this problem, we propose a volume discount mechanism base...

WWW has developed rapidly, and it is becoming easy to make personal web sites. In general, we create and edit web pages by using a HTML authoring software or writing HTML source codes in a text editor. Then, we need to upload them to a web server. When we make and build our own web pages by the existing tools, it takes a lot of time and effort to c...

In this paper, we mainly present a support method of our proposed e-learning system. We employ qualitative simulations because this lets the learners understand the conceptual principles in economic dynamics. First, we define some qualitative values employed on simulation graph model that consists of nodes and arcs. Then, we show the support method...