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2024 IEEE Global Communications Conference, GLOBECOM 2024

作者： Ding, Kuiyuan Liu, Fangfang Yang, Yang Chen, Mingzhe Guo, Caili Beijing University of Posts and Telecommunications Beijing Key Laboratory of Network System Architecture and Convergence School of Information and Communication Engineering Beijing100876 China University of Miami Department of Electrical and Computer Engineering The Institute for Data Science and Computing Coral GablesFL33146 United States Beijing University of Posts and Telecommunications Beijing Laboratory of Advanced Information Networks School of Information and Communication Engineering Beijing100876 China

ISBN: (纸本)9798350351255

Large scale artificial intelligence (AI) models possess excellent capabilities in semantic representation and understanding, making them particularly well-suited for semantic encoding and decoding. However, the substantial scale of these AI models imposes unacceptable computational resources and communication delays. To address this issue, we propose a semantic communication scheme based on robust knowledge distillation (RKD-SC) for large scale model enabled semantic communications. In the considered system, a transmitter extracts the features of the source image for robust transmission and accurate image classification at the receiver. To effectively utilize the superior capability of large scale model while make the cost affordable, we first transfer knowledge from a large scale model to a smaller scale model to serve as the semantic encoder. Then, to enhance the robustness of the system against channel noise, we propose a channel-aware autoencoder (CAA) based on the Transformer architecture. Experimental results show that the encoder of proposed RKD-SC system can achieve over 93.3% of the performance of a large scale model while compressing 96.67% number of parameters. Code: https://***/echojayne/RKD-SC. © 2024 IEEE.

关键词： Channel coding

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A virtual machine-based invasion detection system for the virtual computing environment

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High Technology Letters 2006年第4期12卷 379-384页

作者：曾宇 Wang Jie Sun Ninghui Li Jun Nie Hua Research and Development Center for National Intelligence Computing System Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 P.R. China Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 P.R. China

Under virtualization idea based on large-scale dismantling and sharing, the implementing of network interconnection of calculation components and storage components by loose coupling, which are tightly coupling in traditional server, achieves computing capacity, storage capacity and service capacity distri- bution according to need in application-level. Under the new server model, the segregation and protection of user space and system space as well as the security monitoring of virtual resources are the important factors of ultimate security guarantee. This article presents a large-scale and expansible distributed invasion detection system of virtual computing environment based on virtual machine. The system supports security monitoring management of global resources and provides uniform view of security attacks under virtual computing environment, thereby protecting the user applications and system security under capacity services domain.

关键词： virtual computing environment oriented virtual machine-based invasion detection system （VIDS） capacity services computing

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A HyperTransport-based personal parallel computer

A HyperTransport-based personal parallel computer

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IEEE International Conference on Cluster Computing

作者： Xiaojun Yang Fei Chen Hailiang Cheng Ninghui Sun Institute of Computing Technology Chinese Academy and Sciences Beijing China Chinese Academy of Sciences Beijing China Key Laboratory of Computer System and Architecture Chinese Academy and Sciences Beijing China

Instead of all using commodity components, an approach building a personal parallel computer on top of a non-coherent HyperTransport (HT) fabric is presented in the paper. The advantage is to provide both lower cost and higher performance compared with the existing method. A HT switch is designed and implemented for the interconnection of a set of AMD Opteron processors for building an in-a-box cluster. On our prototyping system, the result of evaluation experiments shows this approach gives the better performance.

关键词： Switches Program processors computers Bandwidth Fabrics Protocols computer architecture

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Particle Swarm Algorithm for the Quality of Service-Oriented Web Services Selection

Particle Swarm Algorithm for the Quality of Service-Oriented...

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International Symposium on Knowledge Acquisition and Modeling, KAM

作者： Hong Xia Zengzhi Li State key Laboratory of Networking and Switch Technology Beijing University of Posts and Telecommunications Beijing China Institute of Computer System Architecture and Network Xi''an Jiaotong University Xi'an Shaanxi China

Existing Web services composition technology, lack of services selecting. A particle swarm optimization algorithm based on the multi-objective optimization strategies was provided to address quality of services to choose the issue of global optimization. It is to transform Web services select the overall optimization problem with QoS into a multi-objective constrained optimization problem based on Qos, using multi-objective PSO intelligent theory, by a number of Qos parameters optimized at the same time, and ultimately produce a set of constraints to meet the Pareto optimal solution. The experimental results show the feasibility and efficiency of the algorithm.

关键词： Particle swarm optimization Web services Quality of service Constraint optimization Pareto optimization Service oriented architecture Switches Constraint theory Logic Optimization methods

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A novel hint-based I/O mechanism for centralized file server of cluster

A novel hint-based I/O mechanism for centralized file server...

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IEEE International Conference on Cluster Computing

作者： Huan Chen Jin Xiong Ninghui Sun Chinese Academy of Sciences Beijing China Institute of Computing Technology Chinese Academy and Sciences Beijing China Key Laboratory of Computer Architecture and System Chinese Academy and Sciences Beijing China

In the medium and small cluster systems, the centralized file server such as NFS is the main approach to provide the storage service with low cost and easy management. However, when multiple parallel applications access the shared storage at the same time, the I/O performance decreases much because of the interference of the I/O requests coming from the different clients. In this paper, a hint-based I/O mechanism is proposed and implemented in the United-FS. By analyzing the hint information of the I/O requests, the related requests are grouped, sorted and scheduled by our hint-based I/O scheduler. The experiments show that our hint-based I/O mechanism nearly doubles the read performance compared with NFS, and has better scalability.

关键词： File systems Servers File servers Performance evaluation Bandwidth Scalability Time factors

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A Unified Framework for Wireless Connectivity Study subject to General Interference Attack

A Unified Framework for Wireless Connectivity Study subject ...

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IEEE International Conference on Communications

作者： Yang Liu Chengzhi Li Changchuan Yin Huaiyu Dai Beijing Key Laboratory of Network System Architecture Convergence Beijing University of Posts and Telecommunications Beijing China Department of Electrical and Computer Engineering North Carolina State University Raleigh NC

Connectivity is crucial to ensure information availability and survivability for wireless networks. In this paper, we propose a unified framework to study the connectivity of wireless networks under a general type of interference attack, which can address diverse applications including Cognitive Radio, Jamming attack and shadowing effect. By considering the primary users, jammers and deep fading as unified Interferers, we investigate a 3-dimensional connectivity region, defined as the set of key system parameters - the density of users, the density of Interferers and the interference range of Interferers - with which the network is connected. Further we study the impact of the Interferers' settings on node isolation probability, which is a fundamental local connectivity metric. Through percolation theory, the sufficient and necessary conditions for global connectivity are also derived. Our study is supported by simulation results.

关键词： Interference Three-dimensional displays Jamming Wireless networks Security Shadow mapping Information systems

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On reducing both shift and capture power for scan-based testing

On reducing both shift and capture power for scan-based test...

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Asia and South Pacific Design Automation Conference

作者： Jia Li Qiang Xu Yu Hu Xiaowei Li Chinese Academy of Sciences Beijing China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong China Key Laboratory of Computer System and Architecture ICT Chinese Academy and Sciences Beijing China

ISBN: (纸本)9781424419210

Power consumption in scan-based testing is a major concern nowadays. In this paper, we present a new X-fllling technique to reduce both shift power and capture power during scan tests, namely LSC-filling . The basic idea is to use as few as possible X-bits to keep the capture power under the peak power limit of the circuit under test (CUT), while using the remaining X-bits to reduce the shift power to cut down the CUT's average power consumption during scan tests as much as possible. In addition, by carefully selecting the X-filling order, our X-filling technique is able to achieve lower capture power when compared to existing methods. Experimental results on ISCAS'89 benchmark circuits show the effectiveness of the proposed methodology.

关键词： Circuit testing Energy consumption Power dissipation system testing Electrical fault detection Fault detection Circuit faults Benchmark testing Laboratories Power engineering computing

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Verification Web Services Composition Based on OWL-S

Verification Web Services Composition Based on OWL-S

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International Symposium on Knowledge Acquisition and Modeling, KAM

In order to ensure the correctness and reliability of Web services composition based on OWL-S, verify the interaction protocol of Web services. It is provided that three lay architecture. Composition service based on OWL-S, GA model is the middle model and the Promela model is the verification model, SPIN as a model validator. The OWL-S composition Web services transform a top-down conversation protocol process into a GA model, use WAST tool into Promela model, the SPIN tool analysis and verification structure and performance of composition services. This method is flexibility and scalability which provide a solution for Web services composition model verification.

关键词： Web services XML Protocols State-space methods Scalability Service oriented architecture computer architecture Switches Automata Asynchronous communication

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QoS-aware transmission management for energy harvesting wireless sensor networks

QoS-aware transmission management for energy harvesting wire...

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International Conference on Telecommunications (ICT)

作者： Dan Liu Yan Sun Yuanyuan Yao Changchuan Yin Beijing Key Laboratory of Network System Architecture Convergence Beijing University of Posts and Telecommunications China School of Electronic Engineering and Computer Science Queen Mary University of London London UK

Wireless sensor networks (WSNs) are widely deployed in many fields nowadays. However, the limited energy storage ability of sensor nodes causes great detrimental effect on the performance of the WSNs. Energy harvesting has been proved as one of the promising ways to replenish the energy constrained sensors for prolonging WSNs lifetime. Another exacerbated problem introduced by non-uniform energy distribution and nonoptimal energy management in WSNs also causes great challenge to WSNs. For realizing the efficient energy utilization and improving the performance of energy harvesting enabled WSNs, two transmission management schemes, Markov decision based packets aggregation allocation (MDPA) and partial Kalman filter with best-match aggregation (PKBPA), are proposed respectively in this paper. MDPA focuses on the node's own energy capabilities to decide the packets number for aggregation, while PKBPA decides the number of packets to be aggregated and transmitted based on the estimated energy state information of the node and its next hop. Simulation results show that the PKBPA scheme outperforms other schemes, especially when the energy is insufficient for the packets transmission.

关键词： Wireless sensor networks Buffer storage Energy harvesting Quality of service Resource management Markov processes Energy states

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A profile-based protein sequence alignment algorithm for a domain clustering database

A profile-based protein sequence alignment algorithm for a d...

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IEEE Symposium on Computational Intelligence and Bioinformatics and Computational Biology (CIBCB)

作者： Lin Xu Fa Zhang Zhiyong Liu Graduate School of Chinese Academy of Sciences China Key Laboratory of Computer System and architecture Institute of Computing Technology Chinese Academy and Sciences China National Natural Science Foundation China

Aiming at the two main shortcomings in Homology Modeling, we have designed and established a domain clustering database. Searching the database is a fundamental work for it. However, current alignment algorithms are mainly based on the sequences, ignoring the structure conservation in domain. This paper proposed a profile-based alignment which considers the structure information into the profile, based on the character of our domain database. We designed an experiment within the database. The results show that both the quality and sensitivity of our scheme are better than pure Smith-Waterman and sequence-based profile algorithms. We strongly believe that this work can help to improve the protein structure prediction

关键词： Protein sequence Clustering algorithms Databases Sequences Heuristic algorithms Laboratories computer architecture Algorithm design and analysis Computational efficiency Acceleration

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