Showing 1,121 - 1,140 results of 19,511 for search '"algorithm"', query time: 0.10s Refine Results
  1. 1121
  2. 1122
  3. 1123

    An Improved Unscented Kalman Filter Algorithm for Radar Azimuth Mutation by Dazhang You, Pan Liu, Wei Shang, Yepeng Zhang, Yawei Kang, Jun Xiong

    Published 2020-01-01
    “…An improved UKF (Unscented Kalman Filter) algorithm is proposed to solve the problem of radar azimuth mutation. …”
    Get full text
    Article
  4. 1124

    A novel chaotic interleaving algorithm for mobile wireless channels by Xianping WANG, Hui CAO

    Published 2016-07-01
    “…Interleaving technique is an efficient technique to resist serious burst errors over mobile wireless fading channels.To resist 2 dimensionality burst errors effectively,a novel chaotic interleaving algorithm based on Baker map was proposed.In the proposed scheme,the binary source sequence was converted to the data matrix,and then the data matrix was dispersed randomly by using the chaotic Baker map approach,in order to realize the function of transforming 2 dimensionality long bust error into the short 1 dimensionality short bust error after de-interleaving.In additional,the proposed algorithm was combined with the convolution code based on Viterbi decoding,and was applied into the scenario of convolutional codes (2,1,3) and the scenario of (2,1,7) separately for a performance comparison.The simulation results show that the performance of the proposed algorithm outperforms better than the traditional algorithms under image transmission over mobile wireless channel.Moreover,the anti-fading capability of the proposed algorithm grows as the packet length increases,while reducing the complexity significantly.Finally,the chaotic interleaver can also enhance every transmitted packet's security with different secret keys.…”
    Get full text
    Article
  5. 1125

    Image defogging algorithm based on guided filtering and adaptive tolerance by Xianli JIN, Wei ZHANG, Linfeng LIU

    Published 2020-05-01
    “…Aiming at the problem of distortion of dark channel algorithm in defogging the sky region,an improved image defogging algorithm based on the guided filtering and adaptive tolerance mechanism was proposed.Firstly,the fitted transmissivity graphs were calculated for the windows with different sizes.Then,the transmissivity was further refined by the guided filtering technique.After that,the transmissivity in sky area was revised by an adaptive tolerance mechanism.Finally,the restored image was converted from RGB space to HSV space,and thus the brightness and contrast of the images could be color compensated.Experimental results show that the proposed algorithm restores the images effectively and obtain preferable defogging results with regard to the processing of bright areas such as the sky areas.…”
    Get full text
    Article
  6. 1126

    Natural Neighborhood-Based Classification Algorithm Without Parameter k by Ji Feng, Yan Wei, Qingsheng Zhu

    Published 2018-12-01
    “…This article introduces a new supervised classification algorithm, Natural Neighborhood Based Classification Algorithm (NNBCA). …”
    Get full text
    Article
  7. 1127

    Independent semantic feature extraction algorithm based on short text by HU Jia-ni, GUO Jun, DENG Wei-hong, XU Wei-ran

    Published 2007-01-01
    “…An independent semantic feature extraction algorithm was proposed,aiming at reducing the sparseness of short text and enhancing its capability of semantic expression.The algorithm first makes use of latent semantic indexing to re-duce the dimension and wipe off noise,and then it introduces independent component analysis to extract statistic inde-pendent and semantic features.Experimental results prove the feasibility of the algorithm and demonstrate it is superior to latent semantic indexing.…”
    Get full text
    Article
  8. 1128

    An Extrapolated Iterative Algorithm for Multiple-Set Split Feasibility Problem by Yazheng Dang, Yan Gao

    Published 2012-01-01
    “…In this paper, we present an accelerated algorithm by introducing an extrapolated factor to solve the multiple-set split feasibility problem. …”
    Get full text
    Article
  9. 1129

    Research on PSO-based intuitionistic fuzzy kernel clustering algorithm by UXiao-dong Y, EIYing-jie L, UEShao-hua Y, ANGRui W

    Published 2015-05-01
    “…The intuitionistic fuzzy kernel c-means clustering algorithm has several problems such as sensitivity to the ini-tial value,low convergence speed,etc.To overcome these shortages,the particle swarm optimization (PSO) algorithm with powerful ability of global search and quick convergence rate is applied to intuitionistic fuzzy clustering.Firstly,PSO is used to optimize the initial clustering centers.Then,the approach of intuitionistic fuzzy kernel clustering based on PSO,namely PS-IFKCM,is proposed.This algorithm can enhance both the clustering ability and the convergence speed.Fi-nally,experiments based on four measured datasets are carried out to illustrate the performance of the proposed method.Compared with results from FCM and IFKCM,PS-IFKCM is of great efficiency for classification.…”
    Get full text
    Article
  10. 1130

    Dynamic bandwidth allocation algorithm based on transmission rate adaptation by Geng CHEN, Wei-wei XIA, Lian-feng SHEN

    Published 2014-05-01
    “…A dynamic bandwidth allocation algorithm was proposed based on the transmission rate adaptation to guaran-tee the quality of service (QoS) for multi-service in heterogeneous wireless network. …”
    Get full text
    Article
  11. 1131

    Adaptive Multihypothesis Prediction Algorithm for Distributed Compressive Video Sensing by Jinxiu Zhu, Ning Cao, Yu Meng

    Published 2013-05-01
    “…A novel adaptive multihypothesis (MH) prediction algorithm for distributed compressive video sensing (DCVS) is proposed in this paper. …”
    Get full text
    Article
  12. 1132

    New Nonsmooth Equations-Based Algorithms for -Norm Minimization and Applications by Lei Wu, Zhe Sun

    Published 2012-01-01
    “…Under mild conditions, we show that the proposed algorithms are globally convergent. The preliminary numerical results demonstrate the effectiveness of the proposed algorithms.…”
    Get full text
    Article
  13. 1133

    Research on Gearbox Fault Diagnosis based on Improved LMD Algorithm by Haibo Xing, Yue Chen, Jinghao Li

    Published 2020-12-01
    “…Firstly,in order to reduce the modal aliasing problem of the Local Mean Decomposition (LMD) algorithm,an optimized rational spline interpolation algorithm is introduced to the construction of the envelope curve. …”
    Get full text
    Article
  14. 1134

    Improved Algorithm for ODCT Computation of a Running Data Sequence by S. Akhter, V. Karwal, R. C. Jain

    Published 2012-01-01
    “…The complexity of developed algorithm is O(N). The validity of algorithm is tested by MATLAB simulations.…”
    Get full text
    Article
  15. 1135
  16. 1136

    An Adaptive Evolutionary Algorithm for Traveling Salesman Problem with Precedence Constraints by Jinmo Sung, Bongju Jeong

    Published 2014-01-01
    “…We propose a new evolutionary algorithm to efficiently obtain good solutions by improving the search process. …”
    Get full text
    Article
  17. 1137

    Channel width adaptation algorithm in multi-channel vehicular networks by PENG Xin, LI Ren-fa, LIU Liang-jiao

    Published 2010-01-01
    “…Aiming at the low utilization of spectrum resource in vehicular networks,an algorithm base on semidefinite programming was presented,which could be utilized to channel width adaptation of multi-channel vehicular networks.Firstly,the algorithm need to measure the distance with the surrounding vehicles to compute conflict graph.And then the semidefinite programming relaxation was employed to coordinate the competition of spectrum resource.Finally,the ultimate channel width adaptation was computed based on the initial channel assignment and compression process.Simulation results demonstrated that the new algorithm not only can promote network throughput,but also perform well on extremely dynamic topology.…”
    Get full text
    Article
  18. 1138

    Improved KNN Algorithm Based on Preprocessing of Center in Smart Cities by Haiyan Wang, Peidi Xu, Jinghua Zhao

    Published 2021-01-01
    “…The KNN algorithm is one of the most famous algorithms in machine learning and data mining. …”
    Get full text
    Article
  19. 1139
  20. 1140

    Minimum Cost Flow Model and Algorithm of Virtual Network Embedding by Xiaohua Chen, Chunzhi Li, Liangyu Chen, Zhenbing Zeng

    Published 2014-06-01
    “…The dynamic process of network virtualization was studied,and the inversion phenomenon that the revenue did not rely on embedding cost was discovered.Then minimum cost flow model and algorithms of virtual network embedding which fit for creating virtual network online on the large-scale substrate network were proposed.Simulation results reveal that the proposed algorithms can improve virtual network acceptance ratio and system revenue,and significantly reduce the time complexity of multi-path virtual link embedding algorithm which ensures real-time performance of online virtual network embedding.The inversion phenomenon also occurs in the simulation.…”
    Get full text
    Article