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The thousands of streaming data overwhelmingly provide for Internet users on Twitter every day, especially for those Twitter users with many friends. However, the useful tweets that users are really interested in personally could be covered by massive other uninformative and uninteresting information. Therefore, how to bring immediately the interesting tweets for users is always a challenging issue...
A multichannel wireless mesh network is composed of wireless routers with multiple radio interfaces operating on non-overlapping channels. It provides a network backbone to support multi-hop connectivity between wireless users and the Internet gateways. However, robustness is a critical issue in such networks because wireless links could be prone to error. Simulation results show that the proposed...
With the constantly emerging of new ways to release information on the internet, together with the rise of several other technologies such as cloud computing and the internet of things, data is explosively growing at an unprecedented speed, manifesting the coming of the era of big data. Facing the challenge of large-scale, demand diversity and real-time processing for big data, the efficient processing...
NCS (Network Coordinate System) provides us an effective way through which we can predict a network node's distance. NCS has been applied to a huge number of Internet applications. In this paper, we build a differential dynamic model to analyze the global dynamical behavior of a famous NCS algorithm Vivaldi and study the convergence problem existing in it. As a result, our model suggest that TIVs...
Combining with the radio frequency identification (RFID) technology and Internet technology, for tracking and trace technology provides an effective solution: in computer to the Internet, and on the basis of using RFID, wireless communication technology, constructing a cover everything in the world of information network. RFID tag contains standardized and interoperability coding information, through...
As Internet sustains high-speed development, its service quality, reliability and efficiency are taken into account once again. Some solutions are proposed. Network measurement technology can reflects operation condition of IP network and discover network abnormity in time which provides reference for orientation and discovery of network fault. Firstly, interval algorithm of packet pair and packet...
The crawler system in a vertical search engine should format a representative sample web page so at to make sure that the page could meet the W3C standards, which make it available that the processed page can be resolved by the visual XPath generator and then the desired XPath value will be found out. In batch-data-extraction, some exact data will be available when object web pages are parsed by the...
The number of High performance computing (HPC) clusters is rising. They are playing an important role in grid computational. As more users and projects rely on HPC clusters, high availability are requirements for a fast growing adoption and use. In this paper, we are developing software that monitors HPC clusters while users' batch jobs execute, and actively performs corrective actions to handle routine...
Along with the rapid development of network technology, the application of internet is wider. The network service also presents the characteristics of diversification. Thus the traditional real-time services have not already people's need. Immediately what to produce is various multi-media businesses such as, video, audio, the television meeting etc. with high request of real time. The traditional...
High performance computing (HPC) facilities such as HPC clusters, as building blocks of Grid computing, are playing an important role in computational Grid. HPC monitoring in HPC cluster systems presents an important challenge because HPC cluster environments are volatile, heterogeneous, not reliable and are managed by different middleware and systems. In this paper, we propose an HPC cluster monitoring...
In contrast to many techniques exploiting temporal patterns of traffic from a single network element, network-wide traffic analysis mainly focuses on the spatial behavior across the whole network. This paper proposes a spatial hidden Markov model (SHMM) to learn the normal patterns of network-wide traffic. Combined with topology information, SHMM models traffic volumes on links as probabilistic outputs...
Identifying anomaly detection such as failure and attacks rapidly and accurately over the Internet holds interest of both network operators and researchers. Network behavior analysis (NBA) system is usually disposed over an intranet, passively collects SNMP data or flow data, and uses signature and anomaly mechanisms to identify and analyze interesting network activities, including traffic anomaly...
The software codec on mobile device introduces significant power consumption because the energy efficiency of general processor based system is much lower than that of the dedicated hardware such as ASIC based accelerator. Dynamical voltage scaling (DVS) is one of the most efficient techniques to promote the energy efficiency. Most existing papers on this topic use simple heuristics to predict processor...
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