The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Service process usually needs to be tailored for reuse because of change of context. In this paper, we present a mining approach to mining process change sequences based on different context using partial derivatives of the factors affecting the change context, thus finding the best feasible sequence.
In this paper we present the design of a decentralized vision-based object search system that can be used for elder care in a smart environment. In our approach, each autonomous search agent maintains separate estimates of the probability density function (PDF) of the object location and makes independent decisions about its search process. Asynchronous cooperative search is achieved by transmitting...
The role of context for better decision-making has been a topic of significant research effort over the years. Context-aware systems are able to adapt their operations to the current context without explicit user intervention and thus aim at increasing usability and effectiveness by taking environmental context into account. These systems exploit information about the context of use, such as the location,...
Successful management of critical situations created by major natural and man-made activities requires monitoring, recognizing, and making sense of these activities in order to support decision makers in either preventing a crisis or acting effectively to mitigate its adverse impact. Context plays an important role in crisis management since it provides decision makers with important information about...
Car tourism systems are becoming popular nowadays, which are actually kinds of information services. This paper presents a context-aware information service system for car touring, named ScudMobile, which addresses some deficiencies of current tourist systems. It has three main features 1) ontology-based knowledge representation makes it easier to share context and information among terminals and...
Awareness systems are a class of computer mediated communication systems that help individuals or groups build and maintain a peripheral awareness of each other. In this paper a service-oriented platform is presented, that supports awareness and informal social communication between community members, distributed over multiple smart home environments. The ASTRA platform, developed in the context of...
Appearance of smartspaces where a number of devices can use a shared view of resources and services characterize modern usage of devices. The paper presents a reference model enabling communication between the devices of a SmartSpace and efficient information usage. The model is based on the application of such technologies as profiling and context management.
Reliable contextual information of remotely monitored patients should be generated to prevent hazardous situations and to provide pervasive services in home-based care. This is difficult for several reasons. First, low level data obtained from heterogeneous sensors have different degrees of uncertainty. Second, generated contexts can be corrupted or conflicted even if they are acquired by simultaneous...
Self-adaptive software systems are those able to manage changing operating conditions dynamically and autonomously. Currently, most proposals in this field rely on an explicit representation of the constituent elements and goals of the system. This approach is suitable for systems where constituent elements are well known at design time. However, in systems where new elements may dynamically enter...
As computers and software applications become ubiquitous the systems we build are increasingly required to run on not just a single piece of hardware, but rather be available for different platforms, different types of hardware and offer different modes of interaction depending on the context of use. Within a formal development process when we consider refinement for interactive systems we therefore...
This paper investigates context awareness in business process modelling (BPM). It introduces a context model for BPM (CM4BPM) and a role-based business process model (RBPM), and presents an approach allowing enacting processes with respect to the context. Decisions driving business processes enactment are based on context related knowledge. The proposed approach consists on using contextual knowledge...
Next generation networks, as well as the Future Internet, need to provide context-sensitive services that adapt to changing user needs, business goals, and environmental conditions. This article presents a novel autonomic management methodology and associated architecture to make the networks and devices that it manages responsive to context-aware business needs. This approach provides a mapping between...
The context-aware computing is a research field that defines systems capable of adapting their behavior according to any relevant information about entities (e.g.,people, places and objects) of interest. The ubiquitous computing is closely related to the use of contexts, since it aims to provide personalized, transparent and on-demand services. Ubiquitous systems are frequently shared among multiple...
Daidalos II works towards its overall mission of providing a beyond 3G framework that is capable of supporting pervasive services built on network and service infrastructures for mobile end users. In order to validate such a framework, Daidalos worked towards the completion of a prototype demonstrator was verified on a Daidalos specific testbed infrastructure, enabling end user validation of the Daidalos...
Context-Sensitive Systems (CSS) demand that designers consider new aspects and challenges in comparison to traditional applications. In a preliminary experiment, we observed that developers have difficulties when including the concept of context in their applications. This paper presents a CSS Design Process, which details the main activities for context specification and the design of CSS and provides...
Contexts, the pieces of information that capture the characteristics of computing environments, are often inconsistent in the dynamic and uncertain pervasive computing environments. Various schemes have been proposed to check context consistency for pervasive applications. However, existing schemes implicitly assume that the contexts being checked belong to the same snapshot of time. This limitation...
Context is any information used to characterize the situation of an entity. Examples of contexts include time, location, identity, and activity of a user. This paper proposes a general context-aware DBMS, named Chameleon, that will eliminate the need for having specialized database engines, e.g., spatial DBMS, temporal DBMS, and Hippocratic DBMS, since space, time, and identity can be treated as contexts...
Pervasive computing systems are highly complex distributed systems. Due to their intrinsic heterogeneity and dynamism, applications must reconfigure themselves continuously to adapt to changes in their execution context. In addition, applications influence their context themselves, e.g., by outputting audio. This may lead to conflicts, when applications interfere with each other or disturb users in...
User preferences have an essential role to play in decision making in pervasive systems. However, building up and maintaining a set of user preferences for an individual user is a nontrivial exercise. Relying on the user to input preferences has been found not to work and the use of different forms of machine learning are being investigated. This paper is concerned with the problem of updating a set...
Pervasive applications are featured by their transient interactions, explicit surrounding contexts and by the flow of activities. Towards transparently tackling these features yet rigorously modelling and validating such applications, this contribution capitalizes on SE advances: (1) explicit separation of concerns (e.g. interaction-centric functionalities and context-awareness); (2) flexible description...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.