Computer Safety, Reliability, and Security. SAFECOMP 2020 Workshops, 2020
In view of deriving business value from their (product) data, organisations need to adopt the rig... more In view of deriving business value from their (product) data, organisations need to adopt the right method and technology to analyse these data to infer new insights and business intelligence. This is feasible only with a certain guarantee on the completeness, trustworthiness, consistency and accuracy of the data. Thus, building trust in acquired (product) data and its analytics is pivotal if we are to realise its full benefits. To this end, we explore different technologies for building data trust, such as Blockchain, traditional distributed databases and trusted third party platforms, in combination with security algorithms. In this paper, we present a Blockchain-based solution for building data trust, based on which we designed a system prototype as a proof-of-concept.
Software is becoming a major driver for innovation in various sectors and has acquired a unique p... more Software is becoming a major driver for innovation in various sectors and has acquired a unique position in the value creation processes of companies [1]. The software ratio increases in many products, and therefore many of them become software intensive. This has implications for the builders of these products as they have to leave their comfort zone of “traditional” product development, and enter the realm of software (intensive) product development.
We need novel ways to translate scientific advances into marketable innovations in Europe. This i... more We need novel ways to translate scientific advances into marketable innovations in Europe. This is even more important now when ICT (Information and Communication Technologies) promise to command an even greater share of economic activity. ICT innovations are typically taking place in a context of increasing complexity of services and products. In this situation, it is extremely difficult for companies to play the innovation game alone. Creator-a European level expert network-was launched in 2012 in order to support innovation through expertise hubs in various countries. The purpose of the Creator alliance is to support the ICT industry so as to enhance its innovation processes and create international alliances in order to design and deploy innovations on the global market. During 2012 we started to build a trusted network between three organizations-Institut Mines Télécom, VTT Technical Research Centre of Finland and Sirrissharing our visions and portfolio of R&D projects. The visions and content of the R&D projects were based on the common collective challenges that we have identified, based on our continuous, close work with the small and medium-sized enterprises in our own SME hubs. During the first year of Creator, we worked on the content of the R&D projects in media, energy and smart grid, big data and trust and security domains. Additionally, we launched 14 R&D projects, of which 8 were particularly successful, that directly support acceleration and the go-to-market approach of the SMEs in our network. So far, our collaboration in the Alliance Creator Network has already helped 30 small and medium-sized enterprises in France, 26 in Finland and 6 in Belgium. Our work made it easier for companies for which European research is something new to enter into the projects. The expert network worked as an architect and trusted research partner in the project preparations. A series of events and seminars were organised with the companies so as to support them in their search for new funding and building new partnerships with players in different European countries. Next year, our target within Creator is to continue the great work with R&D projects, but also to create novel services that help our enterprises gain competitive advantage in their business aims.
Framework development involves many challenges, from a technical as well as a managerial point of... more Framework development involves many challenges, from a technical as well as a managerial point of view: reuse documentation, proliferation of versions, effort estimation, delta analysis, architectural drift. Several of these challenges are not, or scarcely, addressed by current OOA/OOD methodologies nor by the framework literature. We elaborate on the experiences we had with building a framework for developing commercial applications in the market of broadcast planning. In particular it is shown how we dealt with these challenges during the development of the framework. Reuse contracts are put forward as an indicative solution to a number of problems we encountered.
Complex software systems have to cope with a steady stream of changing requirements. However, cur... more Complex software systems have to cope with a steady stream of changing requirements. However, current software engineering techniques are ill equipped for assessing the impact of changes, either within a single system or across reused assets and the systems in which they are reused. This is a critical inhibitor for (amongst others) effort estimation in the object-oriented development process where reuse and incremental development play a crucial role. We have been confronted with this problem in deriving a commercial domain specific framework from a custom built application (in the area of broadcast planning). In this case the problem boils down to efficient effort estimation of customisations of the framework early in the development process. In the context of a research project we are investigating reuse contracts as a possible solution.
Agora is a framework for exploring object-oriented languages. In this paper we will discuss a par... more Agora is a framework for exploring object-oriented languages. In this paper we will discuss a particular prototype-based instance of Agora that features a general mixin-based approach to (multiple) inheritance. One of the major innovations of Agora is that many important features of object-orientation including inheritance, slot access, reification, cloning and inline objects are introduced by means of message passing rather than by ordinary programming structures.The syntax and semantics of Agora is explained and illustrated with examples. Furthermore, an FTP-site is given where a Smalltalk implementation of Agora can be found.
Scrum is a successful agile management method for incremental software development whose success ... more Scrum is a successful agile management method for incremental software development whose success has raised an interest outside the software community. Can Scrum principles be applied to develop other types of products than software products? In this paper, sev-eral such alternative applications of Scrum are stud-ied. The paper identifies four different models for ap-plying Scrum based on two parameters: team' s shared commitment and resolving ability.
This part of the book presents 21 different experience reports of companies implementing part of ... more This part of the book presents 21 different experience reports of companies implementing part of the software innovation canvas. You will find many examples of how different companies address the practice areas and their activities. They can serve as a source of inspiration for your particular business context. The experience reports cover a wide range of software organizations, active in
Mixin-based inheritance is an inheritance technique that has been shown to subsume a variety of d... more Mixin-based inheritance is an inheritance technique that has been shown to subsume a variety of different inheritance mechanisms. It is based directly upon an incremental modification model of inheritance. This paper addresses the question of how mixins can be seen as named attributes of classes the same way that objects, methods, and also classes in their own right, are seen as named attributes of classes. The general idea is to let a class itself have control over how it is extended. This results in a powerful abstraction mechanism to control the construction of inheritance hierarchies in two ways. Firstly, by being able to constrain the inheritance hierarchy; secondly, by being able to extend a class in a way that is specific for that class. Nested mixins are a direct consequence of having mixins as attributes. The scope rules for nested mixins are discussed, and shown to preserve the encapsulation of objects. The following text presents research results of the Belgian Incentive Program "Information Technology"-Computer Science of the future, initiated by the Belgian State-Prime Minister's Service-Science Policy Office. The scientific responsability is assumed by its authors. * The first author is supported by the above research program. 1 To avoid confusion it's important to note here that there is a difference in emphasis in mixins as used in e.g. CLOS and mixins as used in mixin-based inheritance. In the former a mixin is "mixed in" by means of multiple inheritance and linearization, whereas in the latter a mixin is explicitly applied to a class. We will come back to this in the next section.
The use of general descriptive names, registered names, trademarks, etc. in this publication does... more The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
This paper discusses the necessity of a meta object protocol in the design of an open hypermedia ... more This paper discusses the necessity of a meta object protocol in the design of an open hypermedia system. It shows that a meta object protocol enables to tailor the behaviour and configuration of the hypermedia system, independent of its constituting elements. The approach is demonstrated by means of the Zypher Open Hypermedia Framework, where the meta object protocol eases the incorporation of system services (i.e. caching, logging, authority control and integrity control) and flexible reconfiguration (i.e. run-time extensibility and cross-platform portability).
Computer Safety, Reliability, and Security. SAFECOMP 2020 Workshops, 2020
In view of deriving business value from their (product) data, organisations need to adopt the rig... more In view of deriving business value from their (product) data, organisations need to adopt the right method and technology to analyse these data to infer new insights and business intelligence. This is feasible only with a certain guarantee on the completeness, trustworthiness, consistency and accuracy of the data. Thus, building trust in acquired (product) data and its analytics is pivotal if we are to realise its full benefits. To this end, we explore different technologies for building data trust, such as Blockchain, traditional distributed databases and trusted third party platforms, in combination with security algorithms. In this paper, we present a Blockchain-based solution for building data trust, based on which we designed a system prototype as a proof-of-concept.
Software is becoming a major driver for innovation in various sectors and has acquired a unique p... more Software is becoming a major driver for innovation in various sectors and has acquired a unique position in the value creation processes of companies [1]. The software ratio increases in many products, and therefore many of them become software intensive. This has implications for the builders of these products as they have to leave their comfort zone of “traditional” product development, and enter the realm of software (intensive) product development.
We need novel ways to translate scientific advances into marketable innovations in Europe. This i... more We need novel ways to translate scientific advances into marketable innovations in Europe. This is even more important now when ICT (Information and Communication Technologies) promise to command an even greater share of economic activity. ICT innovations are typically taking place in a context of increasing complexity of services and products. In this situation, it is extremely difficult for companies to play the innovation game alone. Creator-a European level expert network-was launched in 2012 in order to support innovation through expertise hubs in various countries. The purpose of the Creator alliance is to support the ICT industry so as to enhance its innovation processes and create international alliances in order to design and deploy innovations on the global market. During 2012 we started to build a trusted network between three organizations-Institut Mines Télécom, VTT Technical Research Centre of Finland and Sirrissharing our visions and portfolio of R&D projects. The visions and content of the R&D projects were based on the common collective challenges that we have identified, based on our continuous, close work with the small and medium-sized enterprises in our own SME hubs. During the first year of Creator, we worked on the content of the R&D projects in media, energy and smart grid, big data and trust and security domains. Additionally, we launched 14 R&D projects, of which 8 were particularly successful, that directly support acceleration and the go-to-market approach of the SMEs in our network. So far, our collaboration in the Alliance Creator Network has already helped 30 small and medium-sized enterprises in France, 26 in Finland and 6 in Belgium. Our work made it easier for companies for which European research is something new to enter into the projects. The expert network worked as an architect and trusted research partner in the project preparations. A series of events and seminars were organised with the companies so as to support them in their search for new funding and building new partnerships with players in different European countries. Next year, our target within Creator is to continue the great work with R&D projects, but also to create novel services that help our enterprises gain competitive advantage in their business aims.
Framework development involves many challenges, from a technical as well as a managerial point of... more Framework development involves many challenges, from a technical as well as a managerial point of view: reuse documentation, proliferation of versions, effort estimation, delta analysis, architectural drift. Several of these challenges are not, or scarcely, addressed by current OOA/OOD methodologies nor by the framework literature. We elaborate on the experiences we had with building a framework for developing commercial applications in the market of broadcast planning. In particular it is shown how we dealt with these challenges during the development of the framework. Reuse contracts are put forward as an indicative solution to a number of problems we encountered.
Complex software systems have to cope with a steady stream of changing requirements. However, cur... more Complex software systems have to cope with a steady stream of changing requirements. However, current software engineering techniques are ill equipped for assessing the impact of changes, either within a single system or across reused assets and the systems in which they are reused. This is a critical inhibitor for (amongst others) effort estimation in the object-oriented development process where reuse and incremental development play a crucial role. We have been confronted with this problem in deriving a commercial domain specific framework from a custom built application (in the area of broadcast planning). In this case the problem boils down to efficient effort estimation of customisations of the framework early in the development process. In the context of a research project we are investigating reuse contracts as a possible solution.
Agora is a framework for exploring object-oriented languages. In this paper we will discuss a par... more Agora is a framework for exploring object-oriented languages. In this paper we will discuss a particular prototype-based instance of Agora that features a general mixin-based approach to (multiple) inheritance. One of the major innovations of Agora is that many important features of object-orientation including inheritance, slot access, reification, cloning and inline objects are introduced by means of message passing rather than by ordinary programming structures.The syntax and semantics of Agora is explained and illustrated with examples. Furthermore, an FTP-site is given where a Smalltalk implementation of Agora can be found.
Scrum is a successful agile management method for incremental software development whose success ... more Scrum is a successful agile management method for incremental software development whose success has raised an interest outside the software community. Can Scrum principles be applied to develop other types of products than software products? In this paper, sev-eral such alternative applications of Scrum are stud-ied. The paper identifies four different models for ap-plying Scrum based on two parameters: team' s shared commitment and resolving ability.
This part of the book presents 21 different experience reports of companies implementing part of ... more This part of the book presents 21 different experience reports of companies implementing part of the software innovation canvas. You will find many examples of how different companies address the practice areas and their activities. They can serve as a source of inspiration for your particular business context. The experience reports cover a wide range of software organizations, active in
Mixin-based inheritance is an inheritance technique that has been shown to subsume a variety of d... more Mixin-based inheritance is an inheritance technique that has been shown to subsume a variety of different inheritance mechanisms. It is based directly upon an incremental modification model of inheritance. This paper addresses the question of how mixins can be seen as named attributes of classes the same way that objects, methods, and also classes in their own right, are seen as named attributes of classes. The general idea is to let a class itself have control over how it is extended. This results in a powerful abstraction mechanism to control the construction of inheritance hierarchies in two ways. Firstly, by being able to constrain the inheritance hierarchy; secondly, by being able to extend a class in a way that is specific for that class. Nested mixins are a direct consequence of having mixins as attributes. The scope rules for nested mixins are discussed, and shown to preserve the encapsulation of objects. The following text presents research results of the Belgian Incentive Program "Information Technology"-Computer Science of the future, initiated by the Belgian State-Prime Minister's Service-Science Policy Office. The scientific responsability is assumed by its authors. * The first author is supported by the above research program. 1 To avoid confusion it's important to note here that there is a difference in emphasis in mixins as used in e.g. CLOS and mixins as used in mixin-based inheritance. In the former a mixin is "mixed in" by means of multiple inheritance and linearization, whereas in the latter a mixin is explicitly applied to a class. We will come back to this in the next section.
The use of general descriptive names, registered names, trademarks, etc. in this publication does... more The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
This paper discusses the necessity of a meta object protocol in the design of an open hypermedia ... more This paper discusses the necessity of a meta object protocol in the design of an open hypermedia system. It shows that a meta object protocol enables to tailor the behaviour and configuration of the hypermedia system, independent of its constituting elements. The approach is demonstrated by means of the Zypher Open Hypermedia Framework, where the meta object protocol eases the incorporation of system services (i.e. caching, logging, authority control and integrity control) and flexible reconfiguration (i.e. run-time extensibility and cross-platform portability).
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Papers by Wim Codenie