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Latent-factor-based Quality-of-Service predictors can achieve high prediction accuracy and good scalability. However, most of them are based on first-order models that cannot well deal with their target problem that is inherently non-convex. Since second-order approaches have proven to be effective to such problems, this work proposes to implement a second-order predictor with an aim to achieve the...
Cloud computing has been touted as a revolutionary concept in computing in the Information Age, since it enhances the quality of communication and it is highly cost effective. Cloud computing market has attracted the interest of several providers and corporations, creating an environment in which the user's Quality of Experience (QoE) becomes a competitive advantage. Cloud services are often available...
The ad-hoc mobile markets are increasing daily with providers and consumers ready to participate in these markets. Issues like service discovery and selection are major challenges in these markets. As these markets grow, researchers are working on discovery while little is done on selection. Most scholars have developed different selection mechanisms considering only consumer's quality of service...
Video traffic, which represents an increasing fraction of the Internet traffic, requires end-to-end quality of service (QoS) guarantees for inter-domain routing. However, providing such guarantees remains a challenge essentially because it requires a strong and fair cooperation among the different network operators or Autonomous Systems (ASes), crossed by the traffic. Having a single AS on the path...
The past decade has witnessed immense developments in the field of network computing thanks to the rise of the cloud computing paradigm, which enables shared access to a wealth of computing and storage resources without needing to own them. While cloud computing facilitates on-demand deployment, mobility and collaboration of services, mechanisms for enforcing security and performance constraints when...
Unmanned control vehicles are used for a variety of scenarios where the user can conduct a task from a remote location, scenarios include surveillance, disaster recovery and agricultural farming. The operation of unmanned vehicles is generally conducted over a wireless communication medium. The nature of the wireless broadcast allows attackers to exploit security vulnerabilities through passive and...
Service matching concerns finding suitable services according to the service requester's requirements, which is a complex task due to the increasing number and diversity of cloud services available. Service matching is discussed in web services composition and user oriented service marketplaces contexts. The suggested approaches have different problem definitions and have to be examined closer in...
Nowadays a great number of different software services are available for usage. These services have different attributes and proper selection of software service for solving given problem is very difficult and non-trivial task. This paper focuses on recommendation of software services. We want to achieve selection of software services which fulfills needs of a user to the greatest possible extent...
Long Term Evolution (LTE) subscribers expect seamless Quality of Experience (QoE) during their ubiquitous Internet access. Due to the high degree of application and content diversity, the amount of system resources that enable good QoE is application session specific and varies on a wide scale. Accordingly, good QoE requires dynamic and adaptive application session level resource management. The standard...
Improving energy efficiency of wireless systems by exploiting the context information has received attention recently as the smart phone market keeps expanding. In this paper, we devise energy-saving resource allocation policy for multiple base stations serving non-real-time traffic by exploiting three levels of context information, where the background traffic is assumed to occupy partial resources...
In the last few years, O2O (Online To Offline) mode become more and more popular, which brings offline service and online web service together, it is important to consider the quality attributes of offline service when recommending service for users online. But in the field of service discovery system, most of the studies focused on function and quality requirements of online service, not on offline...
Location based services (LBS) and the recent awareness towards their privacy threats have kindled the research in providing state of the art approaches and techniques to preserve the user location privacy. Most of these approaches make use of the k-anonymity model to provide personalized location privacy. Through personalization, a k-anonymity model is able to achieve privacy based on the input user...
The recent emergence of the cloud opens new challenges for data processing and integration. Indeed, unlimited access to cloud resources and the "pay as U go" model change the hypothesis for integrating and processing big data collections. This is accentuated due to cloud provider incentives to attract data providers and let them choose their cloud. In this context data services are deployed...
The Internet of Things paradigm has gained ground both in the industry and in research worlds, and it is considered to revolution the way the physical and virtual worlds are connected by 2025. Fault tolerance, resilience, and self-healing research face new challenges in the Internet of Things context due to its promise of connecting billions of devices in an Internet-like structure. Objects in the...
The paper describes an innovative and fully cognitive approach which offers the opportunity to cope with some key limitations of the present telecommunication networks by means of the introduction of a novel architecture design in the perspective of the emerging Future Internet framework. Within this architecture, the Quality of Experience (QoE) Management functionalities are aimed at approaching...
The emerging interactive mobile applications rely the effectiveness of their delivery and their users quality of experience (QoS) on the performance of the underlying heterogeneous networking infrastructures, i.e., their quality of service (QoS). However, the performance that the users will be provided with is a priori unknown, depending on their specific context (e.g., location, time, operator)....
With the increasing number of services published on the Web, it is useful to derive desirable service execution plans by identifying relevant and reliable services via an intelligent and automated recommendation process. Different from other proposals, this paper proposes to exploit time-dependant relationships among web services and their quality of service to make better recommendations. We employ...
With the growing number of web service availablein web, selecting web service that satisfies the users need isbecome more difficulties. So to deal with the problem, numerousapproaches are proposed. Some approaches are interested tointegrate the Quality of Service (QoS) to select the suitableservice. The QoS plays an important role in the discovery andselection process of web services within many similar...
The emergence of ubiquitous computing, and the wide adoption of smart phones over the past few years require many Web services to function in a context-aware manner. In such services, not only the functional attributes, but also the QoS attributes (e.g., Response time and availability) also depend on the context of the service. Trust (i.e., The degree of compliance of a service to its specification)...
In this paper, we present a framework for evaluating the QoE of a service that includes functional and non-functional service requirements. Non-functional requirements are classified into objective, subjective, and business parameters that affect Quality of Service (QoS), Quality of Experience (QoE), and Quality of Business (QoBiz), correspondingly. As those metrics have a strong dependency between...
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