Keiichi Nakata - Academia.edu (original) (raw)
Papers by Keiichi Nakata
International Conference on Artificial Intelligence, 1994
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Springer eBooks, Aug 29, 2016
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International Conference on Informatics and Semiotics in Organisations, May 1, 2016
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IGI Global eBooks, May 24, 2011
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WIT Transactions on Information and Communication Technologies, 1970
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This thesis describes a basis for applying causal reasoning to the problem domain of design. Caus... more This thesis describes a basis for applying causal reasoning to the problem domain of design. Causal reasoning covers one of the fundamental aspects of reasoning humans perform when dealing with dynamic change. Such temporal features prevail in design problems which aim to provide artefacts based on some desired behaviour. This thesis first investigates causal reasoning to develop a language with expressiveness for representation and reasoning about change and for application to design. The second half of the thesis describes how this can be used for simple design tasks.The language for causal reasoning is based on the logic CI introduced by Yoav Shoham. CI is a nonmonotonic temporal logic for prediction, which prefers those models which are chronologically more ignorant, i.e., if changes were to take place they should happen as late as possible. It was presented as a method for dealing with frame problems. In this thesis, a framework for abduction is suggested for CI. It assumes that certain states persist not only forward, but also backward. This thesis argues that it is often the case that reasoning about the past events is in fact reasoning about the events between two or more time points. Problems of such nature are referred to as interpolation problems, and this thesis describes a way of dealing with this class of problems by bidirectional sweeping, which performs reasoning forwards and backwards over the time range. The outcome of this operation is a plausible sequence of events that took place in that time range.This method of causal reasoning is applied to design problems; by focusing on how de¬ vices work, we develop the notion of behaviour oriented design which aims to achieve the desired behaviour of devices and their interactions with their surroundings. Es¬ sentially, the specification is provided as the sequences of events which are desired to happen by functioning of the device in the given environment. All the design knowl¬ edge involved is represented by causal theories of the language CI, which provides a mechanism to predict the performance of the current design. The comparison between the behavioural specification and the predicted model allows verification of designs and suggestions for modifications to them. The proposed design framework is useful for domains which involve dynamic change and in which design requirements can readily be expressed as temporal sequences of events
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Proceedings of the 3rd International Conference on Communication and Information Processing, Nov 24, 2017
Information sharing requires a careful understanding of how information is created, utilised and ... more Information sharing requires a careful understanding of how information is created, utilised and managed within organisational activity setting. They key to successful information sharing is thus understanding the activity itself and how the information that needs to be shared among the actors is managed. However, such an analysis often focuses on the information itself and lacks a systematic approach to analyse the activities in relation to information sharing. This paper proposes a framework for analysing information sharing requirements based on activity theory. In this framework, activities are the main embodiment of information sharing, and analysis is made through activity theory elements. Using examples in policing, the paper demonstrates a systematic approach to capturing requirements for information sharing.
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Springer eBooks, 2016
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Springer eBooks, 2018
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First Interdisciplinary Workshop on Communication for Sustainable Communities - IWCSC '10, 2010
Abstract The use of Web 2.0 technologies, in particular, Social Media tools, are rapidly increasi... more Abstract The use of Web 2.0 technologies, in particular, Social Media tools, are rapidly increasing. Accordingly, the distinction between personal and professional lives is blurring, as users incorporate the advantages of SM into their work environment. Companies have ...
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IFIP Advances in Information and Communication Technology, 2015
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Companies are increasingly recognising their responsibilities to the communities they operate in.... more Companies are increasingly recognising their responsibilities to the communities they operate in. ISO 26000 recommends that corporate social responsibility (CSR) activities should reflect the social potential of the company's core business. However, companies can find it difficult to identify causes that match the values, services or products they are trying to represent in their CSR actions. Furthermore, once projects are identified, it can then be challenging to agree on containable and achievable tasks and understand the potential risks involved from the outset. These tasks can require employee volunteering which in turn requires monitoring and management. It is these additional tasks that can make it difficult for small and medium sized enterprises (SMEs), who are typically too small to take on full projects. Therefore SMEs commonly form clusters in order to engage in CSR activities. However, operating in clusters presents further challenges because SME's local and regio...
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2010 2nd International Conference on Computer Technology and Development, 2010
Abstract Improvements in context modelling and reasoning techniques have facilitated the developm... more Abstract Improvements in context modelling and reasoning techniques have facilitated the development of context-aware applications, where these applications need to accommodate and respond autonomously to changing context information. Context is often used to refer to any piece of information regarding the surrounding environment, where human activities and computing tasks take place. In this paper, we propose a generic context model, which consists of three fundamental classes, namely Extrinsic Context, Interface Context, and ...
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Proceedings of the Twelfth International Conference on Informatics and Semiotics in Organisations, 2010
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Context provides computing environments with the ability to adapt the information they provide by... more Context provides computing environments with the ability to adapt the information they provide by implicitly deriving the user's requirements from the context that surrounds the user at any situation. While considerable work has been carried out on the application of context, the meaning of context is often misinterpreted and poorly defined. Most of the attempts to use context have centred on the physical elements of the environment, users, or devices. However, only a little work has put emphasis on the context of the interaction itself. Accordingly, it is believed that it is necessary to incorporate context in the interaction design process as it becomes more important in interactive systems. This thesis proposes a method for designing interactive systems, where the dynamic changes in contexts and normative activities are captured and specified in the form of a formal language, called Context-based Activity Specified Language (CASL). The Context-based Activity Design (CoB AD) method is aimed at enabling a systematic design that assists or guides researchers and system designers in the field of interactive systems design to put emphasis on the context of the system use and its interaction. This method is built on three key components, namely the Context Ontology Model (COM), context reasoning mechanisms and specification of information fields. It also consists of the Context State Transition (CST) model that represents the transitions of activity states, where the ordering of activity states is often dependent on the context reasoning rules. One possible way to resolve such a conflict in context reasoning is to incorporate the concepts of norms and information fields, borrowed from Organisational Semiotics. This offers a novel method for designing interactive systems that is capable of modelling information fields as a set of norms. This generates different sets of outcomes depending on the different set of norms applied, which is useful for designing interactive systems. A series of conflict resolution strategies is proposed in this study, which mainly differ in the type and preference context that are used to resolve potential conflicts in the overlapping information fields . The CoB AD method is demonstrated by applying it into three different scenarios: (1) the activity design in a smart home, (2) the citizen lifecycle design and (3) the workaround design in a healthcare design work process. The method of treating conflicting norms in multiple information fields is presented in detail. Finally, the conclusions, contributions and future work identified from this study are expected to benefit researchers.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
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Aligning information systems (IS) solutions with business goals and needs are crucial for IS acti... more Aligning information systems (IS) solutions with business goals and needs are crucial for IS activities. IS professionals who are able to work closely with both the business and technical staff are key enablers of business and IT alignment. IS programs in higher education (HE) institutions have a long tradition of enabling graduates to develop the appropriate skills needed for their future careers. Yet, organizations are still having difficulty finding graduates who possess both the knowledge and skills that are best suited to their specific requirements. Prior studies suggest that IS curricula are often ill-matched with industry/business needs. This study reports on the business analysis curricula (re) design which was undertaken to align it with a key professional body for the IS industry. This study presents the approaches taken in the (re) design of the module, and provides a discussion of the wider implications for IS curricula design. The results show a positive outcome for th...
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IFIP Advances in Information and Communication Technology, 2016
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International Conference on Artificial Intelligence, 1994
Bookmarks Related papers MentionsView impact
Springer eBooks, Aug 29, 2016
Bookmarks Related papers MentionsView impact
International Conference on Informatics and Semiotics in Organisations, May 1, 2016
Bookmarks Related papers MentionsView impact
IGI Global eBooks, May 24, 2011
Bookmarks Related papers MentionsView impact
WIT Transactions on Information and Communication Technologies, 1970
Bookmarks Related papers MentionsView impact
This thesis describes a basis for applying causal reasoning to the problem domain of design. Caus... more This thesis describes a basis for applying causal reasoning to the problem domain of design. Causal reasoning covers one of the fundamental aspects of reasoning humans perform when dealing with dynamic change. Such temporal features prevail in design problems which aim to provide artefacts based on some desired behaviour. This thesis first investigates causal reasoning to develop a language with expressiveness for representation and reasoning about change and for application to design. The second half of the thesis describes how this can be used for simple design tasks.The language for causal reasoning is based on the logic CI introduced by Yoav Shoham. CI is a nonmonotonic temporal logic for prediction, which prefers those models which are chronologically more ignorant, i.e., if changes were to take place they should happen as late as possible. It was presented as a method for dealing with frame problems. In this thesis, a framework for abduction is suggested for CI. It assumes that certain states persist not only forward, but also backward. This thesis argues that it is often the case that reasoning about the past events is in fact reasoning about the events between two or more time points. Problems of such nature are referred to as interpolation problems, and this thesis describes a way of dealing with this class of problems by bidirectional sweeping, which performs reasoning forwards and backwards over the time range. The outcome of this operation is a plausible sequence of events that took place in that time range.This method of causal reasoning is applied to design problems; by focusing on how de¬ vices work, we develop the notion of behaviour oriented design which aims to achieve the desired behaviour of devices and their interactions with their surroundings. Es¬ sentially, the specification is provided as the sequences of events which are desired to happen by functioning of the device in the given environment. All the design knowl¬ edge involved is represented by causal theories of the language CI, which provides a mechanism to predict the performance of the current design. The comparison between the behavioural specification and the predicted model allows verification of designs and suggestions for modifications to them. The proposed design framework is useful for domains which involve dynamic change and in which design requirements can readily be expressed as temporal sequences of events
Bookmarks Related papers MentionsView impact
Proceedings of the 3rd International Conference on Communication and Information Processing, Nov 24, 2017
Information sharing requires a careful understanding of how information is created, utilised and ... more Information sharing requires a careful understanding of how information is created, utilised and managed within organisational activity setting. They key to successful information sharing is thus understanding the activity itself and how the information that needs to be shared among the actors is managed. However, such an analysis often focuses on the information itself and lacks a systematic approach to analyse the activities in relation to information sharing. This paper proposes a framework for analysing information sharing requirements based on activity theory. In this framework, activities are the main embodiment of information sharing, and analysis is made through activity theory elements. Using examples in policing, the paper demonstrates a systematic approach to capturing requirements for information sharing.
Bookmarks Related papers MentionsView impact
Springer eBooks, 2016
Bookmarks Related papers MentionsView impact
Springer eBooks, 2018
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
First Interdisciplinary Workshop on Communication for Sustainable Communities - IWCSC '10, 2010
Abstract The use of Web 2.0 technologies, in particular, Social Media tools, are rapidly increasi... more Abstract The use of Web 2.0 technologies, in particular, Social Media tools, are rapidly increasing. Accordingly, the distinction between personal and professional lives is blurring, as users incorporate the advantages of SM into their work environment. Companies have ...
Bookmarks Related papers MentionsView impact
IFIP Advances in Information and Communication Technology, 2015
Bookmarks Related papers MentionsView impact
Companies are increasingly recognising their responsibilities to the communities they operate in.... more Companies are increasingly recognising their responsibilities to the communities they operate in. ISO 26000 recommends that corporate social responsibility (CSR) activities should reflect the social potential of the company's core business. However, companies can find it difficult to identify causes that match the values, services or products they are trying to represent in their CSR actions. Furthermore, once projects are identified, it can then be challenging to agree on containable and achievable tasks and understand the potential risks involved from the outset. These tasks can require employee volunteering which in turn requires monitoring and management. It is these additional tasks that can make it difficult for small and medium sized enterprises (SMEs), who are typically too small to take on full projects. Therefore SMEs commonly form clusters in order to engage in CSR activities. However, operating in clusters presents further challenges because SME's local and regio...
Bookmarks Related papers MentionsView impact
2010 2nd International Conference on Computer Technology and Development, 2010
Abstract Improvements in context modelling and reasoning techniques have facilitated the developm... more Abstract Improvements in context modelling and reasoning techniques have facilitated the development of context-aware applications, where these applications need to accommodate and respond autonomously to changing context information. Context is often used to refer to any piece of information regarding the surrounding environment, where human activities and computing tasks take place. In this paper, we propose a generic context model, which consists of three fundamental classes, namely Extrinsic Context, Interface Context, and ...
Bookmarks Related papers MentionsView impact
Proceedings of the Twelfth International Conference on Informatics and Semiotics in Organisations, 2010
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Context provides computing environments with the ability to adapt the information they provide by... more Context provides computing environments with the ability to adapt the information they provide by implicitly deriving the user's requirements from the context that surrounds the user at any situation. While considerable work has been carried out on the application of context, the meaning of context is often misinterpreted and poorly defined. Most of the attempts to use context have centred on the physical elements of the environment, users, or devices. However, only a little work has put emphasis on the context of the interaction itself. Accordingly, it is believed that it is necessary to incorporate context in the interaction design process as it becomes more important in interactive systems. This thesis proposes a method for designing interactive systems, where the dynamic changes in contexts and normative activities are captured and specified in the form of a formal language, called Context-based Activity Specified Language (CASL). The Context-based Activity Design (CoB AD) method is aimed at enabling a systematic design that assists or guides researchers and system designers in the field of interactive systems design to put emphasis on the context of the system use and its interaction. This method is built on three key components, namely the Context Ontology Model (COM), context reasoning mechanisms and specification of information fields. It also consists of the Context State Transition (CST) model that represents the transitions of activity states, where the ordering of activity states is often dependent on the context reasoning rules. One possible way to resolve such a conflict in context reasoning is to incorporate the concepts of norms and information fields, borrowed from Organisational Semiotics. This offers a novel method for designing interactive systems that is capable of modelling information fields as a set of norms. This generates different sets of outcomes depending on the different set of norms applied, which is useful for designing interactive systems. A series of conflict resolution strategies is proposed in this study, which mainly differ in the type and preference context that are used to resolve potential conflicts in the overlapping information fields . The CoB AD method is demonstrated by applying it into three different scenarios: (1) the activity design in a smart home, (2) the citizen lifecycle design and (3) the workaround design in a healthcare design work process. The method of treating conflicting norms in multiple information fields is presented in detail. Finally, the conclusions, contributions and future work identified from this study are expected to benefit researchers.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Bookmarks Related papers MentionsView impact
Aligning information systems (IS) solutions with business goals and needs are crucial for IS acti... more Aligning information systems (IS) solutions with business goals and needs are crucial for IS activities. IS professionals who are able to work closely with both the business and technical staff are key enablers of business and IT alignment. IS programs in higher education (HE) institutions have a long tradition of enabling graduates to develop the appropriate skills needed for their future careers. Yet, organizations are still having difficulty finding graduates who possess both the knowledge and skills that are best suited to their specific requirements. Prior studies suggest that IS curricula are often ill-matched with industry/business needs. This study reports on the business analysis curricula (re) design which was undertaken to align it with a key professional body for the IS industry. This study presents the approaches taken in the (re) design of the module, and provides a discussion of the wider implications for IS curricula design. The results show a positive outcome for th...
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IFIP Advances in Information and Communication Technology, 2016
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