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Bondarenko O.,TU Eindhoven | Janssen R.,Novay | Driessen S.,Oce Technologies
Journal of the American Society for Information Science and Technology | Year: 2010

In this article a set of requirements for the design of a personal document management system is presented, based on the results of three research studies (Bondarenko, 2006; Bondarenko & Janssen, 2005; Bondarenko & Janssen, 2009). We propose a framework, based on layers of task decomposition, that helps to understand the needs of information workers with regard to personal document and task management. Relevant user processes are described and requirements for a document-management system are derived for each layer. The derived requirements are compared to related studies, and implications for system design are discussed. © 2009 ASIS&T.


Lankhorst M.M.,Novay | Proper H.A.,Radboud University Nijmegen | Jonkers H.,BiZZdesign
International Journal of Information System Modeling and Design | Year: 2010

In current business practice, an integrated approach to business and IT is indispensable. In many enterprises, however, such an integrated view of the entire enterprise is still far from reality. To deal with these challenges, an integrated view of the enterprise is needed, enabling impact/change analysis covering all relevant aspects. This need sparked the development of the ArchiMate language, which was developed with the explicit intention of becoming an open standard, and as such has been designed such that it is extendable while still maintaining a clear and orthogonal structure. This article is concerned with documenting some of the key structures and design principles underlying the ArchiMate language. ArchiMate is designed as an architecture description language (ADL) for enterprise architectures. The authors will start by discussing the challenges facing the design of an architecture description language. Consequently we discuss how the design principles of the ArchiMate language aim to tackle these challenges. They then continue with a discussion of the modelling concepts needed. In this, we make a distinction between concepts needed to model domains in general, the modelling of dynamic systems, and the modelling of enterprise architectures. Copyright © 2010, IGI Global.


Wartena C.,Novay | Brussee R.,University Utrecht | Slakhorst W.,Novay
Proceedings - 21st International Workshop on Database and Expert Systems Applications, DEXA 2010 | Year: 2010

A common strategy to assign keywords to documents is to select the most appropriate words from the document text. One of the most important criteria for a word to be selected as keyword is its relevance for the text. The tf.idf score of a term is a widely used relevance measure. While easy to compute and giving quite satisfactory results, this measure does not take (semantic) relations between words into account. In this paper we study some alternative relevance measures that do use relations between words. They are computed by defining co-occurrence distributions for words and comparing these distributions with the document and the corpus distribution. We then evaluate keyword extraction algorithms defined by selecting different relevance measures. For two corpora of abstracts with manually assigned keywords, we compare manually extracted keywords with different automatically extracted ones. The results show that using word co-occurrence information can improve precision and recall over tf.idf. © 2010 IEEE.


Gazendam L.,Novay | Wartena C.,Novay | Brussee R.,University Utrecht
Proceedings - 21st International Workshop on Database and Expert Systems Applications, DEXA 2010 | Year: 2010

In many cases keywords from a restricted set of possible keywords have to be assigned to texts. A common way to find the best keywords is to rank terms occurring in the text according to their tf.idf value. This requires a corpus of texts from which document frequencies can be derived. In this paper we show that we can obtain results of the same quality without the usage of a background corpus, using relations between terms provided in a thesaurus. © 2010 IEEE.


Folmer E.,University of Twente | Luttighuis P.O.,Novay | Van Hillegersberg J.,University of Twente
Electronic Markets | Year: 2011

The adoption of standards to improve interoperability in the automotive, aerospace, shipbuilding and other sectors could save billions. While interoperability standards have been created for a number of industries, problems persist, suggesting a lack of quality of the standards themselves. The issue of semantic standard quality is not often addressed. In this research we take a closer look at the quality of semantics standards, development processes, and survey the current state of the quality of semantic standards by means of a questionnaire that was sent to standards developers. This urvey looked at 34 semantic standards, and it shows that the quality of semantic standards for inter-organizational interoperabilitycan be improved. Improved standards may advance interoperability in networked business. Improvement of semantic standards requires transparency of their quality. Although many semantic standard development organisations already have quality assurance in place, this research shows that they could benefit from a quality measuring instrument. © The Author(s) 2011.


Engelsmana W.,BiZZdesign | Engelsmana W.,University of Twente | Quartelc D.,Novay | Jonkersa H.,BiZZdesign | van Sinderen M.,University of Twente
Enterprise Information Systems | Year: 2011

The methods for enterprise architecture (EA), such as The Open Group Architecture Framework, acknowledge the importance of requirements modelling in the development of EAs. Modelling support is needed to specify, document, communicate and reason about goals and requirements. The current modelling techniques for EA focus on the products, services, processes and applications of an enterprise. In addition, techniques may be provided to describe structured requirements lists and use cases. Little support is available however for modelling the underlying motivation of EAs in terms of stakeholder concerns and the highlevel goals that address these concerns. This article describes a language that supports the modelling of this motivation. The definition of the language is based on existing work on high-level goal and requirements modelling and is aligned with an existing standard for enterprise modelling: the ArchiMate language. Furthermore, the article illustrates how EA can benefit from analysis techniques from the requirements engineering domain. © 2011 Taylor & Francis.


Quartel D.,Novay | Steen M.W.A.,Novay | Lankhorst M.M.,Novay
Enterprise Information Systems | Year: 2012

This article describes an architecture-based approach to IT valuation. This approach offers organisations an instrument to valuate their application and project portfolios and to make well-balanced decisions about IT investments. The value of a software application is assessed in terms of its contribution to a selection of business goals. Based on such assessments, the value of different applications can be compared, and requirements for innovation, development, maintenance and phasing out can be identified. IT projects are proposed to realise the requirements. The value of each project is assessed in terms of the value it adds to one or more applications. This value can be obtained by relating the 'as-is' application portfolio to the 'to-be' portfolio that is being proposed by the project portfolio. In this way, projects can be ranked according to their added value, given a certain selection of business goals. The approach uses ArchiMate to model the relationship between software applications, business processes, services and products. In addition, two language extensions are used to model the relationship of these elements to business goals and requirements and to projects and project portfolios. The approach is illustrated using the portfolio method of Bedell and has been implemented in BiZZdesign Architect. © 2012 Copyright Taylor and Francis Group, LLC.


Wartena C.,Novay
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

Collaborative tagging has become popular in recent years. As was noted in several studies completely different types of tags are found. Tags either can refer to the personal usage context of a tagger or can describe the tagged object. We investigate different types of tags found in LibraryThing, an online service in which books are tagged, and define a number of features that are typical for some of these classes. Finally, we show how these features can be used to classify tags automatically. © 2010 Springer-Verlag Berlin Heidelberg.


De Boer J.,Novay
Conference on Human Factors in Computing Systems - Proceedings | Year: 2010

In this project people with dementia and their carers were asked to describe their problems in daily life. With their input integrated solutions for people with dementia were developed. The aim was to develop solutions that help ageing people with early dementia to experience greater autonomy and feelings of empowerment, and to enjoy an enhanced quality of life. This movie shows the solutions that were developed during the project. © 2010 Copyright is held by the author/owner(s).


Van De Wijngaert L.,University of Twente | Pieterson W.,University of Twente | Teerling M.L.,Novay
International Journal of Information Management | Year: 2011

Information technology allows national and local governments to satisfy the needs of citizens in a cost effective way. Unfortunately, citizens still tend to prefer traditional, more costly channels, such as the front desk, phone and mail. Through pilot projects government agencies attempt to influence this behavior of citizens, directing them towards the online channel. With this paper we provide insight into the possibility to influence citizens' behavior in the complex landscape of multi-channel service provision. The paper systematically compares five pilot projects using a framework that is based on organizational and marketing literature. The results show that socio-psychological factors are crucial in multi-channel management, much more than the technology itself. We conclude that citizens can be directed towards the online channel. However, not all projects are successful. Economic and legal instruments tend to sort more direct effects than communication or service instruments. Moreover, organizational factors such as bureaucracy often hinder eventual success. Choosing a smart and relatively small scope and strong project manager may help to evoke success in directing citizen online behavior. © 2011 Elsevier Ltd. All rights reserved.

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