The goal is to provide a repository of examples, challenge problems, and solutions that the software engineering for selfadaptive systems community can use. Mechanisms for leveraging models at runtime in selfadaptive. These problems are primarily due to the openloop structure often followed in software development. Parametricity is one of the most effective ways to achieve compositionality and reuse in software development. The management of complex systems, or large systems is to break them down into goals that are doable. High speed and high change that encouragement of the asd. A novel approach for building self adaptive software based on a controller synthesis algorithm is presented.
This site contains a set of exemplars for selfadaptive systems. Looking at adaptive software development information. The selfadaptive approach in software engineering builds on. Most webbased software today usually fixes the number of clients to let the connected clients gain high quality service. Ieee computer society, vancouver, bc, canada, 2141. Software engineering for adaptive and self managing.
Adaptive software development focuses on collaboration and learning as a technique to build complex systems. In proceedings of the 8th international symposium on software engineering for adaptive and self managing systems, seams, pages 169174. A exemplar can be quite generic such as an artifact or rather specific such as a model problem in selfadaptive systems. To deal with these uncertainties, a selfadaptive system continuously monitors itself. Integrating semantic runtime models for adaptive software systems. Citeseerx document details isaac councill, lee giles, pradeep teregowda. A general overview of research and problems on selfadaptive software can be found in 7,12.
The results show that this approach can effectively contribute to the se4sas area. It is also valuable for image6,7 and signal processing applications. Adaptive software development asd is a software development process that grew out of the work by jim highsmith and sam bayer on rapid application development rad. Although the selfadaptability of systems has been studied in a wide range of disciplines, from biology to robotics, only recently has the software engineering community recognized its key. Towards a rule model for selfadaptive software qianxiang. Stevens, p bidirectional model transformations in qvt.
Reference architecture for self adaptive software 1 the development module provides a guideline set for the development of software entities sas. In this chapter, we will understand the various concepts of adaptive software development. Towards knowledgeintensive software engineering framework for selfadaptive software hyocheol lee. Controllers are complex components incorporated in selfadaptive systems, which are crucial to their function since they are in charge of. Companies dont understand software development still. Modern software systems are often required to adapt their behavior at runtime in order. Parametric specifications have been thoroughly analyzed in the algebraic setting and are by now a standard part of most software development toolkits. International seminar, dagstuhl castle, germany, october 2429, 2010, revised selected and invited papers. A statistical modelchecker and analyzer for probabilistic systems. Assuming any selfadaptive system is composed of a managed system which implements the systems functionality and a managing system the controller, which implements the selfadaptive functionality, such as fig.
The practices of adaptive software development are with the belief of continuous adaption. Agile software development, theory of complex adaptive systems, complexity theory introduction one of the problems of structured software development is the lack of theories that can describe and predict 1 the behavior of information systems developed via structured software development approaches, and 2 the tactical fit of structured. Selfadaptive software evaluates its own behavior and changes its behavior when the evaluation indicates that the software does not accomplish what it is intended to do or when better functionality or better performance is possible. These changes may stem from the software systems self internal causes, e. Brian arthur and his colleagues, at the santa fe institute, used the complex adaptive systems cas theory to revolutionize. Adaptive software development i about the tutorial adaptive software development is a move towards adaptive practices, leaving the deterministic practices in the context of complex systems and complex environments. The ubiquitous practice of testing, debugging and improving programs at the design time should be automated, and established as a. Towards runtime testing of dynamic adaptive systems. Exemplars software engineering for selfadaptive systems. The self adaptive approach in software engineering builds on. Analyzing latencyaware selfadaptation using stochastic. A controller synthesis algorithm for building self. It has gotten better, but may have swung too far in the other direction. Adaptive software development asd is a software development process that grew out of rapid application development work by jim highsmith and sam bayer.
It embodies the principle that continuous adaptation of the process to the work at hand is the normal state of affairs. The ubiquitous practice of testing, debugging and improving programs at the design time should be automated, and established as a continuing run time routine. Selfadaptive software modifies its own behavior in response to changes in its oper ating environment. Selfadaptive systems are softwareintensive systems endowed with the ability to respond to a variety of changes that may occur in their environment, goals, or the system itself by adapting their structure and behaviour at runtime in an autonomous way. The workshop on software engineering for adaptive and self managing systems seams is an academic conference for exchanging research results and experiences in the areas of autonomic computing, self managing, self healing, self optimizing, self configuring, and self adaptive systems theory. A research roadmap 15 control engineering has determined that systems with a single control loop are easier to reason about than systems with multiple loops. Towards knowledgeintensive software engineering framework for self adaptive software hyocheol lee. A general overview of research and problems on self adaptive software can be found in 7,12. The development of selfadaptive software sas is a complex task, since this. Software development process has undergone tremendous. Theory of complex adaptive systems and agile software.
The adaptive software development practices are driven by a belief in continuous adaptation, with the lifecycle equipped to accepting continuous change as the norm. An architecturebased approach to selfadaptive software uci. Towards a framework for selfadaptive componentbased. The idea of self adaptive software is to implement this common facility of human mind within the frameworkof the standard logical methods of software engineering. Software engineering for selfadaptive systems pp 126 cite as. Unfortunately, the latter types of control loops are far more common. The idea of selfadaptive software is to implement this common facility of human mind within the framework of the standard logical methods of software engineering. Assurance using models at runtime for selfadaptive.
The project initiation data should be gathered in a preliminary jad session, considering speed as the major aspect. Towards a tacticbased evaluation of selfadaptive software architecture availability. The idea of self adaptive software is to implement this common facility of human mind within the framework of the standard logical methods of software engineering. Lncs 7475 software engineering for selfadaptive systems. Towards a classification of selfadaptive software systems. Towards semantics of selfadaptive software springerlink. An architecturebased approach to selfadaptation was first developed in 5, exploiting architectural models to. Selfadaptive software evaluates its own behavior and changes its behavior when the evaluation indicates that the software does not accomplish what it is intended to do or when better functionality.
An adaptive software development asd methodology is new software from in agile software development. Development of an adaptable application by application programmers and assemblers using an. Agile software development group of software development methodologies based on iterative and incremental development requirements and solutions evolve through collaboration between self organizing, cross functional teams introduced in 2001 its a light weight as a reaction against the heavy weight methods. More recently, they also have been adopted for engineering selfadaptive software systems. Adaptive software development concepts tutorialspoint.
Selfadaptive software is a response to these demands. Scientists and engineers have made significant efforts to design and develop self adaptive systems. These changes may stem from the software systems self internal causes e. A self adaptive system can handle many situations by. Research questions as suggested by 14 and 16, the picoc criteria 18 was applied in order to frame and structure our research questions. Adaptive software development practices in adaptive.
An architecturebased approach to selfadaptation was first developed in 5, exploiting architectural models. To summarize the global picture of our approach, the development and execution of a componentbased selfadaptive application can be decomposed in two phases. Towards semantics of selfadaptive software abstract. Adaptive software development practices tutorialspoint. Towards semantics of selfadaptive software request pdf. Application software software designed to process data and support users in an organization. However, an effort towards classifying, specifying and refining algorithmic theories, rather than mere datatypes, quickly leads beyond the.
Towards a metamodel for qualityaware selfadaptive systems design esma maatougui, chafia bouanaka, nadia zeghib. Request pdf towards semantics of selfadaptive software when people perform computations, they routinely monitor their results, and try to adapt and improve their algorithms when a need arises. Towards a taxonomy of adaptive agentbased collaboration patterns for autonomic service ensembles. The key aspect of self adaptive software is that code behavior is evaluated or tested at runtime. A selfadaptive system can handle many situations by. Evaluating the effectiveness of the rainbow selfadaptive system. Testing the robustness of controllers for selfadaptive. For selfadaptive software, client numbers is adjustable so that more clients can be served and qos is also kept. Self adaptive software problems and projects request pdf. Using abstraction in modular veri of synchronous adaptive systems, in. Landscape and research challenges feedforward mechanisms as well e.
The evaluation approaches for selfadaptive systems proposed so far in the scientific literature may be analyzed from various points of view. Pdf selfadaptive systems modify themselves at runtime in order to control. A framework based on learning techniques for decision. The key aspect of selfadaptive software is that code behavior is evaluated or tested at runtime. Selfadaptive software first international workshop. It is a design principle for the creation of software systems. Citeseerx towards semantics of selfadaptive software. The asd focus is developing for complex product, large system, and iterative development with same prototyping. Pdf on designing selfadaptive software systems researchgate.
Such guidelines act on requirement analysis, design, implementation, and evolution i. Selfadaptive software evaluates its own behavior and changes behavior when the evaluation indicates that it is not accomplishing what the software is intended to do, or when better functionality or. Selfadaptive software aims to adjust various artifacts or attributes in response. It was established in 2006 at the international conference on software engineering icse. Thus, a key challenge for selfadaptive software systems is assurance. Selfadaptive system an overview sciencedirect topics. Self adaptive software is a relatively new idea aiming at producing applications that can readily adapt in the face of changing user needs, desires and environment. In the sequel, we first briefly introduce the semantic technique section 6.
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