Distributed software agents offer great promise in building an increasingly pervasive middleware and component technology. Context-aware systems are able to monitor and automatically adapt their operation accordingly to the execution context in which they are introduced. Component-based development (CBD) focuses on the development and reuse of self-contained software assets in order to achieve ...

The recommendation system is one of the core technologies for implementing personalization services. Recommendation systems in ubiquitous computing environment should have the capability of context-awareness. In this research, we developed a music recommendation system, which we shall call C_Music, which utilizes not only the user’s demographics and behavioral patterns but also the user’s conte...

Connecting Source Code to Runtime Activity “Context-Based Analytics—Establishing Explicit Links between Runtime Traces and Source Code,” by Jürgen Cito and his colleagues, discusses an approach for more easily identifying the source code associated with specific runtime activity.1 Developers have many available data sources for investigating the source of runtime problems. So, the process is of...

Bid-rigging is a dangerous attack in electronic auction. Abe and Suzuki firstly introduced the idea of receipt-free to prevent this attack. In this paper we point out that Abe and Suzuki’s scheme only provides receipt-freeness for losing bidders. We argue that it is more important to provide receipt-freeness for winners and propose a new receipt-free sealed bid auction scheme using the homomorp...

Smart environments include context-aware computing to enhance system capabilities which affect user interaction positively. A context-aware application should collect contextual information through different ways depending on technology availability and handle this information adequately to execute actions or warnings, present information or modify the environment. Ambient intelligence (AmI) ha...

With the increasing popularity of social media and ubiquity of mobile devices, location-based services have become a trending topic in both academia and industry. These services, such as Foursquare and Facebook Places, allow users to search and explore around them. The notion of group recommendation, though new, has started to generate interest. Many scenarios in our daily lives involve others ...

We developed XVCL (XML-based Variant Configuration Language), a method and tool for product lines, to facilitate handling variants in reusable software assets (such as architecture, code components or UML models). XVCL is a newer version of Bassett’s frames [1], a technology that has achieved substantial productivity improvements in large data processing product lines written in COBOL. Despite ...

Several content based image retrieval systems rely on unsupervised image segmentation. We argue that in this application context global segmentation methods are not generally applicable. We propose an algorithm which combines local and area based information of multidimensional features, such as luminance, color and texture. Importantly, the selection of the regions with representative attribut...

Enhancing the physical environment of users with IT and communication elements is one of the main objectives of the pervasive computing paradigm. The so-called “smart spaces”, which are typical pervasive computing environments, combine computing infrastructure with intelligent and context-aware services in order to advance the users’ computing experience. In this paper we describe the basic met...

Context-awareness represents an important research domain in mobile computing by utilizing information about persons, places and objects anytime and anywhere. The highly dynamic contexts created by this paradigm raise questions how to efficiently determine alikeness and affinity between such contexts. Inspired by mechanisms from locationaware computing, we tackle the issue of contextual proximi...