Showing 2,661 - 2,680 results of 19,511 for search '"Algorithms"', query time: 0.09s Refine Results
  1. 2661

    Improved packet classification algorithm based on multidimensional space dynamic division and RFC by Xiaoyu CHEN, Yueming LU

    Published 2018-03-01
    “…According to the existing problem that memory usage grows exponentially with the size increase of rule set in RFC (recursive flow classification) algorithm,an improved packet classification algorithm,HRFC (Hybrid-RFC) was put forward.The new algorithm completes the dynamic division of a multidimensional space rule set by a decision tree,accomplishes the mapping of each subset with multiple phase reduction trees,so as to realize fast and efficient packet classification.The simulation results show that the new algorithm can reduce the space usage effectively while guaranteeing the performance of classification speed.…”
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  2. 2662

    Morphological Accuracy Data Clustering: A Novel Algorithm for Enhanced Cluster Analysis by Abdel Fattah Azzam, Ahmed Maghrabi, Eman El-Naqeeb, Mohammed Aldawood, Hewayda ElGhawalby

    Published 2024-01-01
    “…In this study, we propose a novel centroid-based clustering algorithm, namely, the morphological accuracy clustering algorithm (MAC algorithm). …”
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  3. 2663
  4. 2664

    Optimal Prestress Investigation on Tensegrity Structures Using Artificial Fish Swarm Algorithm by Xiaodong Feng, Wanpeng Zhang, Yaozhi Luo, Sergio Zlotnik

    Published 2020-01-01
    “…To obtain the optimal uniform prestress of a tensegrity structure with geometric configuration given, a novel method is developed for prestress design of tensegrity structures by utilizing the artificial fish swarm algorithm (AFSA). In the beginning, the form-finding process is implemented by solving a linear homogeneous system concerning the self-equilibrium system. …”
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    Article
  5. 2665

    BiRch:a bidirectional search algorithm for k-step reachability queries by Jun-feng ZHOU, Wei CHEN, Chun-ping FEI, Zi-yang CHEN

    Published 2015-08-01
    “…A new bidirectional processing algorithm,namely BiRch was proposed.When checking whether a vertex u can reach v within k steps,BiRch firstly compared the out-degree of u and the in-degree of v,and processed the one with smaller degree,such that to avoid large indexes and the inefficiency due to large degree.Two pruning strategies were proposed based on bidirectional breadth-first levels and bidirectional topological levels,such that to reduce the number of visited vertexes.Experimental results on 19 real datasets verify the efficiency of the proposed method in terms of different metrics,including indexing time,index size,query processing time,the number of visited vertexes,and scalability.…”
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  6. 2666

    An External Archive-Based Constrained State Transition Algorithm for Optimal Power Dispatch by Xiaojun Zhou, Jianpeng Long, Chongchong Xu, Guanbo Jia

    Published 2019-01-01
    “…This paper proposes an external archive-based constrained state transition algorithm (EA-CSTA) with a preference trade-off strategy for solving the power dispatch optimization problem in the electrochemical process of zinc (EPZ). …”
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  7. 2667

    Association Analysis of Food Risk Factors Based on Improved FP-growth Algorithm by YU Jiabin, MA Xinyue, ZHAO Zhiyao, WANG Xiaoyi, ZHANG Xin, CUI Xiaoyu, BAI Yuting, CHEN Shuaixiang

    Published 2024-12-01
    Subjects: “…food safety surveillance sampling; association analysis; entropy weight method; minibatchkmeans clustering; frequent pattern-growth algorithm…”
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  8. 2668
  9. 2669

    Link prediction of heterogeneous complex networks based on an improved embedding learning algorithm. by Lang Chai, Rui Huang

    Published 2025-01-01
    “…The study was conducted using multiple real-world and synthetic datasets to validate the proposed algorithm's performance. The results indicate that SW-Metapath2vec significantly outperforms benchmark algorithms. …”
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    Article
  10. 2670

    An Energy Efficient Anchor-Free Localization Algorithm for No-Identity Wireless Sensor Networks by Zhe Qu, Minglei Shu, Ming Yang, Chongqing Zhang, Nuo Wei, Qingbei Guo, Tao Du

    Published 2015-12-01
    “…Subsequently, the effectiveness of the algorithm is confirmed by rigid theory. The simulation results show that the proposed algorithm can improve the performance of localization and energy efficiency in WSN significantly.…”
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  11. 2671

    Energy-efficient resource allocation algorithm for massive MIMO OFDMA downlink system by Ying HU, Bao-feng JI, Yong-ming HUANG, Fei YU, Lv-xi YANG

    Published 2015-07-01
    “…An algorithm is proposed for energy-efficient resource allocation scheme in massive MIMO OFDMA downlink mobile communication system.A mathematical formulation of optimization issue is provided with the objective of maximizing system energy efficiency lower bound under the minimum data rate requirement of user,meanwhile the BS uses a zero-forcing(ZF) precoding.And then for optimizing energy efficiency function,the bandwidth allocation,power allocation and the number of antenna arrays at the BS are adjusted synchronously.First,an iterative algorithm derived from optimality condition for bandwidth assignment is proposed.Second,the properties of fractional programming and convex optimization are used to maximize the energy efficiency.Specifically,both the number of antenna arrays at the BS and the transmit data rate at the user are adjusted.Simulation results show that the proposed schemes not only have less iteration number but also have good perform for system energy efficiency and throughput.…”
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  12. 2672

    Resource Allocation Algorithm for the Downlink of Multi-User OFDM System with Optimized Fairness by Limei Tang, Haiyan Cao, Jun Li, Shiyi Xie

    Published 2015-12-01
    “…A resource allocation algorithm for the downlink of multi-user OFDM system with optimized fairness was studied. …”
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  13. 2673

    Semi-Markov decision process based congestion control algorithm for video transmission by Bo TIAN, Yi-min YANG, Shu-ting CAI

    Published 2014-08-01
    “…Due to the problem that the congestion control algorithm of transmission control protocol (TCP) cannot meet the requirements of quality of experience for Internet video transmission, a semi-Markov decision process based conges-tion control algorithm for video transmission was proposed. …”
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  14. 2674

    An Efficient Adaptive Anticollision Algorithm Based on 4-Ary Pruning Query Tree by Wei Zhang, Yajun Guo, Xueming Tang, Guohua Cui, Longkai Wu, Ying Mei

    Published 2013-12-01
    “…To reduce these excessive idle timeslots the 4-ary tree anticollision algorithm brings, an anti-collision algorithm based on adaptive 4-ary pruning query tree (A4PQT) is proposed in this paper. …”
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  15. 2675

    An Algorithm to Select the Optimal Program Based on Rough Sets and Fuzzy Soft Sets by Liu Wenjun, Li Qingguo

    Published 2014-01-01
    “…Combining rough sets and fuzzy soft sets, we propose an algorithm to obtain the optimal decision program. In this algorithm, firstly, according to fuzzy soft sets, we build up information systems; secondly, we compute the significance of each parameter according to rough set theory; thirdly, combining subjective bias, we give an algorithm to obtain the comprehensive weight of each parameter; at last, we put forward a method to choose the optimal program. …”
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    Article
  16. 2676

    Reverberation multi-source localization algorithm based on compressed sensing with dual microphones by Yi ZHANG, Juan LI, Min ZHANG

    Published 2019-01-01
    “…In traditional multi-source localization field,it is necessary to guarantee that the number of microphone is more than the number of source.To overcome this constraint,a dual-microphone multi-source localization algorithm based on CS was proposed,where the number of sound source localized successfully was more than 3.The multi-source localization was regarded as the block sparse signal reconstruction in this algorithm,and the full room impulse responses normalized were exploited to construct the compressed observation matrix in frequency domain.In reconstructed block sparse signal,the positions of non-zero blocks were corresponded to the positions of sound sources in space.The simulation shows that compared with the SRP-sub algorithm,in reverberation time 0.6s with dual-microphone,the proposed multi-source localization algorithm based on compressed sensing has higher capability which can reach 80% success rate by using 40 frequency points to localize 3 sound sources.…”
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  17. 2677

    A Real-Valued Negative Selection Algorithm Based on Grid for Anomaly Detection by Ruirui Zhang, Tao Li, Xin Xiao

    Published 2013-01-01
    “…Negative selection algorithm is one of the main algorithms of artificial immune systems. …”
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  18. 2678

    A New DG Multiobjective Optimization Method Based on an Improved Evolutionary Algorithm by Wanxing Sheng, Ke-yan Liu, Yongmei Liu, Xiaoli Meng, Xiaohui Song

    Published 2013-01-01
    “…A revised IEEE 33-bus system with multiple DG units was used to test the multiobjective optimization algorithm in a distribution power system. The proposed algorithm was implemented and compared with the strength Pareto evolutionary algorithm 2 (SPEA2), a particle swarm optimization (PSO) algorithm, and nondominated sorting genetic algorithm II (NGSA-II). …”
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  19. 2679

    Coverage control algorithm for wireless sensor networks based on non-cooperative game by Haoran LIU, Heyao ZHAO, Yujing DENG, Xingqi WANG, Rongrong YIN

    Published 2019-01-01
    “…For the redundancy coverage of nodes leads to the phenomenon of low energy efficiency,Non-cooperative game theory was used to solve it.A revenue function was proposed,which considering the coverage of nodes and the residual energy.The lifetime of the node and network path gain were applied to revenue function.The network topology was built by nodes with the appropriate work strategy.Control algorithm coverage in wireless sensor network was proposed based on Non-cooperative game theory.A Nash equilibrium between the coverage rate and the residual energy was proved,and the return function converged to the Pareto optimal.Experiments show that the algorithm can provide reasonable coverage of network nodes and ensure energy efficiency.…”
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    Article
  20. 2680