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Today more, more Web services are exposed to developers through public APIs (API-fication), enabling the spread of new services which create value for end users. The number of these services is expected to grow in the coming years. This will complicate the user experience due to the complexity required to figure out which of the available services are the most relevant and, also, the need for a user...
The increasing use of online social networks (OSNs) in emergency situations shows us a promising future of human cooperation through OSNs. Despite this intense interest, a number of fundamental limitations still exist, such as lack of appropriate conceptual models and limitations on cooperation methods and shareable resources. To address existing limitations, we propose Whistle - a cooperation framework...
Elder care poses an increasingly demanding issue that every aging society has to address. The notion of Ambient Assisted Living aims to solve the issue by promoting the idea of ageing at home through innovative ICT technology. The core technology relies on the real-time identification of occupant's status and prompt notification to supporting service providers before pertinent measures can be taken...
Mobile services are gaining importance in handling data on mobile devices. With heaps of information flowing in the network, a service for caching preferential posts will be helpful. Understanding the profile of an individual in a social network will help determine the relationship value with respect to other individuals in the network. Similarly a post in a social network can have contexts associated...
A smartphone is a personal device and as such usually hosts multiple public user identities such as a phone number, email address, and Facebook account. As each smartphone has a unique Bluetooth MAC address, Bluetooth discovery can be used in combination with the user registration to a server with a Facebook account. This makes it possible to identify a nearby smartphone related to a given Facebook...
Lifelong Learning (LLL) can be enabled by Personal Learning Environments (PLEs), which are usually composed of a mixed set of loosely coupled tools, applications and systems. In such a mixed environment, managing learning content across the PLE can often be challenging and lead to disorganized content and as such, makes content reuse difficult while also possibly causing learners to lose content over...
Facebook applications are more convenient and flexible to use, since students tend to invest a good deal of time in the use of such technologies, given that Facebook retains the educational quality, as it is widely used in instructional contexts. To this direction, our Facebook application promotes language learning. Furthermore, it incorporates machine learning techniques in order to offer user classification...
We present PeerSense, a system that provides meaningful co-presence information which serves as an enabler for various applications that require user's current social proximity information, for example contextual photo-sharing. Unlike traditional approaches for inferring co-presence, PeerSense is both privacy-preserving and easy-to-use.
In this paper we present a fully automatic system for face augmentation on mobile devices. A user can point his mobile phone to a person and the system recognizes his or her face. A tracking algorithm overlays information about the identified person on the screen, thereby achieving an augmented reality effect. The tracker is running on the mobile client, while the recognition is running on a server...
Although community detection has drawn tremendous amount of attention across the sciences in the past decades, no formal consensus has been reached on the very nature of what qualifies a community as such. In this article we take an orthogonal approach by introducing a novel point of view to the problem of overlapping communities. Instead of quantifying the quality of a set of communities, we choose...
Social networking applications leverage valuable information from social graphs and integrate communication capabilities to offer new services. However, currently, these applications are limited to communication capabilities such as click-to-call or click-to-conference. Once the communication session is established the social context and the communication context are not integrated in these services...
Prefetching and Web caching have been known as techniques to increase the speed of Web loading process. Previous studies have been conducted to infuse artificial intelligence such as Artificial Neural Network (ANN) into Web caching. In this paper, we propose a new hybrid technique based on combination of ANN and Particle Swarm Optimization (PSO) for classification Web object either to cache or not...
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