Topic
Context awareness
About: Context awareness is a research topic. Over the lifetime, 5790 publications have been published within this topic receiving 119944 citations.
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TL;DR: Two context-awareness models are described, the macro and micro approaches, that define and integrate contextual views of individual pervasive components micro level and global knowledge of the system macro level, and a more detailed overview of a micro Context-aware programming model for open smart space problems is provided.
Abstract: Context-aware software provides adapted services to users or other software components. On the other hand, Autonomic Pervasive Computing uses context to reduce the complexity of pervasive system utilization, management and maintenance. This paper describes two context-awareness models, the macro and micro approaches, that define and integrate contextual views of individual pervasive components micro level and global knowledge of the system macro level, and provides a more detailed overview of a micro Context-aware programming model for open smart space problems. These models are presented and compared with respect to their ability to meet the requirements of the Autonomic Pervasive Computing concept of the four selves.
27 citations
23 Aug 2010
TL;DR: Novel reinforcement learning based architecture is proposed to overcome the drawbacks of existing approaches to proactive adaptation and address subsequent challenge of how to act according to predicted context in order to strengthen the system.
Abstract: Context awareness is one of the core features of pervasive computing systems. Pervasive systems can also be improved by smart application of context prediction. This paper addresses subsequent challenge of how to act according to predicted context in order to strengthen the system. Novel reinforcement learning based architecture is proposed to overcome the drawbacks of existing approaches to proactive adaptation. Context spaces theory is used as an example of how existing context awareness systems can be enhanced to achieve proactive adaptation. This recently developed theory addresses problems related to sensors uncertainty and high-level situation reasoning and it can be enhanced to achieve efficient proactive adaptation as well. This article also discusses implementation options and possible testbed to evaluate the solutions.
27 citations
01 Mar 2006
TL;DR: This paper extends the existing authoring support by integrating processes of topic identification, content collection and discourse structure building in a single environment and combines this process context awareness with explicit domain and discourse knowledge to steer system suggestions.
Abstract: This paper presents an approach to assist authors during the authoring of multimedia presentations. We extend the existing authoring support by integrating processes of topic identification, content collection and discourse structure building in a single environment. This integration allows identification of the context of the authoring process. Our approach combines this process context awareness with explicit domain and discourse knowledge to steer system suggestions. We evaluate our approach with an experimental system prototype.
27 citations
31 Oct 2001
TL;DR: This paper proposes a synergy of reflection and code mobility as a means for middleware to give applications the desired level of flexibility to react to changes happening in the environment, including those that have not necessarily been foreseen by middleware designers.
Abstract: The increasing popularity of wireless devices, such as mobile phones, personal digital assistants, watches and the like, is enabling new classes of applications that present challenging problems to designers. Applications have to be aware of, and adapt to, frequent variations in the context of execution, such as fluctuating network bandwidth, decreasing battery power changes in location or device capabilities, and so on. In this paper, we argue that middleware solutions for wired distributed systems cannot be used in a mobile setting, as the principle of transparency that has driven their design runs counter to the new degrees of awareness imposed by mobility. We propose a synergy of reflection and code mobility as a means for middleware to give applications the desired level of flexibility to react to changes happening in the environment, including those that have not necessarily been foreseen by middleware designers. We use the sharing and processing of images as an application scenario to highlight the advantages of our approach.
27 citations
07 Aug 2017
TL;DR: A set of novel scores to measure the similarity between a user and a candidate venue in a new city using contextually appropriate places based on user's history of preferences in other cities as well as user's context are presented.
Abstract: Personalized context-aware venue suggestion plays a critical role in satisfying the users' needs on location-based social networks (LBSNs). In this paper, we present a set of novel scores to measure the similarity between a user and a candidate venue in a new city. The scores are based on user's history of preferences in other cities as well as user's context. We address the data sparsity problem in venue recommendation with the aid of a proposed approach to predict contextually appropriate places. Furthermore, we show how to incorporate different scores to improve the performance of recommendation. The experimental results of our participation in the TREC 2016 Contextual Suggestion track show that our approach beats state-of-the-art strategies.
27 citations