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As cloud-based services become more numerous and dynamic, resource provisioning becomes more and more challenging. A QoS constrained resource allocation problem is considered in this paper, in which service demanders intend to solve sophisticated parallel computing problem by requesting the usage of resources across a cloud-based network, and a cost of each(More)
Task scheduling problems are of paramount importance which relate to the efficiency of the whole cloud computing facilities. In Hadoop, the open-source implementation of MapReduce, scheduling policies, such as FIFO or delay scheduling in FAIR scheduler is used by the master node to distribute waiting tasks to computing nodes (slaves) in response to the(More)
Statistics-based Internet traffic classification using machine learning techniques has attracted extensive research interest lately, because of the increasing ineffectiveness of traditional port-based and payload-based approaches. In particular, unsupervised learning, that is, traffic clustering, is very important in real-life applications, where labeled(More)
In many environmental monitoring applications, since the data periodically sensed by wireless sensor networks usually are of high temporal redundancy, prediction-based data aggregation is an important approach for reducing redundant data communications and saving sensor nodes' energy. In this paper, a novel prediction-based data collection protocol is(More)
Cloning attacks threaten radio-frequency identification (RFID) applications but are hard to prevent. Existing cloning attack detection methods are enslaved to the knowledge of tag identifiers (IDs). Tag IDs, however, should be protected to enable and secure privacy-sensitive applications in anonymous RFID systems. In a first step, this paper tackles cloning(More)
Cloud computing is a natural evolution for data and compute centers with automated systems management, workload balancing, and virtualization technologies. Cloud-based services integrate globally distributed resources into seamless computing platforms. In an open cloud computing framework, scheduling tasks with guaranteeing QoS constrains presents a(More)
Distributed denial-of-service (DDoS) attacks pose a serious threat to Internet security. While SYN flooding exploits the TCP three-way handshake process by sending many connection requests using spoofed source IP addresses to a victim server. DDoS attack keeps objective host from handling legitimate requests by causing it to populate its backlog queue with(More)