Network Independent Service Research Articles

A Hybrid Service Recommendation Prototype Adapted for the UCWW: A Smart-City Orientation

With the development of ubiquitous computing, recommendation systems have become essential tools in assisting users in discovering services they would find interesting. This process is highly dynamic with an increasing number of services, distributed over networks, bringing the problems of cold start and sparsity for service recommendation to a new level. To alleviate these problems, this paper proposes a hybrid service recommendation prototype utilizing user and item side information, which naturally constitute a heterogeneous information network (HIN) for use in the emerging ubiquitous consumer wireless world (UCWW) wireless communication environment that offers a consumer-centric and network-independent service operation model and allows the accomplishment of a broad range of smart-city scenarios, aiming at providing consumers with the “best” service instances that match their dynamic, contextualized, and personalized requirements and expectations. A layered architecture for the proposed prototype is described. Two recommendation models defined at both global and personalized level are proposed, with model learning based on the Bayesian Personalized Ranking (BPR). A subset of the Yelp dataset is utilized to simulate UCWW data and evaluate the proposed models. Empirical studies show that the proposed recommendation models outperform several widely deployed recommendation approaches.

효율적인 차량제어를 위한 모바일기반의 범용 통합 제어모듈

This paper presents an integrated control module for controlling transportation machine and automatic navigation using a combined technology of mobile telematics and transportation machine telematics, i.e. Mobile In Vehicle (MIV). This development includes hardware implementation and its verification of control mechanism applied to vehicle. In particular, the module is designed to be versatile in such a way that it can collect various information and facilitate various options for convenience by supporting existing networks, such as TCP/IP, Wi-Fi and 3G mobile radio networks. The study offers its versatility, intelligence and cost-effectiveness by enabling the module to support network-independent service, whereas conventional modules operate only in a certain network. Based on this module, a multiple of subsequent convenient functions for transportation machine can further be developed for safe and intelligent transportation machines.

Secure distributed intelligent networks

Intelligent Networks (IN) separate the control and call processing from the switches, leading to fast, vendor and network-independent services, with reduced deployment costs. The integration of new technologies such as CORBA and mobile agents improves the IN performance. However, the use of distributed technologies raises security concerns. In this paper, we present a secure IN architecture using application-level and CORBA-based security mechanisms. Furthermore, through simulations we measure the efficiency burden imposed by the employment of the security mechanisms in the case of Interactive Multimedia Retrieval. Simulation results demonstrate a scalability of performance decrease on the different elements of the network. However, the security architecture is flexible enough to achieve an acceptable trade-off between security and efficiency. Network and security policies can be configured to achieve tolerable levels of performance according to application needs.