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Journal of Zhejiang University SCIENCE C
ISSN 1869-1951(Print), 1869-196x(Online), Monthly
2020 Vol.21 No.6 P.809-962
Special Feature on New Trends in Fractional Calculus for Information Science
(Editor-in-Chief: Yu-dong ZHANG, Deputy Editor-in-Chief: Guo-cheng WU)
Yi-fei Pu, Jian Wang
DOI: 10.1631/FITEE.1900593 Downloaded: 7807 Clicked: 7389 Cited: 0 Commented: 0(p.809-833) <Full Text><PPT> 1888
1四川大学计算机学院，中国成都市，610065
2中国石油大学（华东）理学院，中国青岛市，266580
摘要：本文介绍采用改进的分数阶最速下降法（FSDM）训练分数阶全局最优反向传播机。该反向传播机是一种分数阶反向传播神经网络（FBPNN）。分数阶反向传播神经网络是反向传播神经网络（BPNNs）大家族中一个先进的分数阶分支，它不同于绝大多数传统一阶最速下降法训练的经典一阶BPNNs。本文提出的FBPNN反向增量搜索在其均方误差近似分数阶偏导数的负方向进行。首先，从数学上描述用改进FSDM训练的FBPNN理论概念。然后，详细给出FBPNN分数阶全局最优收敛性的数学证明，分析神经网络结构构建以及分数阶多尺度全局寻优问题。最后，通过实验比较FBPNN和经典一阶BPNN的性能：包括函数逼近、分数阶多尺度全局寻优以及基于实际数据的全局搜索和误差拟合能力比对。相比经典一阶BPNN，FBPNN最主要优点是具有更高效的全局寻优能力，能够判定全局最优解。
关键词组：分数阶微积分；分数阶反向传播算法；分数阶最速下降法；均方误差；分数阶多尺度全局优化
Multi-focus image fusion based on fractional-order derivative and intuitionistic fuzzy sets
Xue-feng Zhang, Hui Yan, Hao He
DOI: 10.1631/FITEE.1900737 Downloaded: 14938 Clicked: 5973 Cited: 0 Commented: 0(p.834-843) <Full Text><PPT> 1717
东北大学理学院，中国沈阳市，110819
摘要：多聚焦图像融合在图像融合中日益重要，在图像处理中扮演着关键角色。本文提出一种基于分数阶导数和直觉模糊集的多聚焦图像融合方法。其将原始图像分解为基础层和细节层，建立一个新的分数阶空间频率来反映图像清晰度。采用分数阶空间频率作为细节层融合准则，并引入直觉模糊集对基础层进行融合。实验结果表明，该方法在多聚焦图像融合方面优于已有先进方法。
关键词组：图像融合；分数阶导数；直觉模糊集；多聚焦图像
Controllability of fractional-order damped systems with time-varying delays in control
Bin-bin He, Hua-cheng Zhou, Chun-hai Kou
DOI: 10.1631/FITEE.1900736 Downloaded: 6714 Clicked: 5660 Cited: 0 Commented: 0(p.844-855) <Full Text><PPT> 1605
An improved ROF denoising model based on time-fractional derivative
Xing-ran Liao
DOI: 10.1631/FITEE.2000067 Downloaded: 4064 Clicked: 5841 Cited: 0 Commented: 0(p.856-865) <Full Text><PPT> 1889
Li-ping Chen, Hao Yin, Li-guo Yuan, Antnio M. Lopes, J. A. Tenreiro Machado, Ran-chao Wu
DOI: 10.1631/FITEE.1900709 Downloaded: 8579 Clicked: 6894 Cited: 0 Commented: 0(p.866-879) <Full Text><PPT> 1807
Correspondence: Discrete fractional watermark technique
Zai-rong Wang, Babak Shiri, Dumitru Baleanu
DOI: 10.1631/FITEE.2000133 Downloaded: 5160 Clicked: 6034 Cited: 0 Commented: 0(p.880-883) <Full Text><PPT> 1716
Regular Papers
Review Article: Development of space-based diffractive telescopes
Wei Zhao, Xin Wang, Hua Liu, Zi-feng Lu, Zhen-wu Lu
DOI: 10.1631/FITEE.1900529 Downloaded: 6850 Clicked: 5132 Cited: 0 Commented: 0(p.884-902) <Full Text><PPT> 1783
Learning to select pseudo labels: a semi-supervised method for named entity recognition
Zhen-zhen Li, Da-wei Feng, Dong-sheng Li, Xi-cheng Lu
DOI: 10.1631/FITEE.1800743 Downloaded: 8131 Clicked: 7504 Cited: 0 Commented: 0(p.903-916) <Full Text><PPT> 1845
MEACC: an energy-efficient framework for smart devices using cloud computing systems
Khalid Alsubhi, Zuhaib Imtiaz, Ayesha Raana, M. Usman Ashraf, Babur Hayat
DOI: 10.1631/FITEE.1900198 Downloaded: 7048 Clicked: 7181 Cited: 0 Commented: 0(p.917-930) <Full Text><PPT> 1954
Coherence analysis and Laplacian energy of recursive trees with controlled initial states
Mei-du Hong, Wei-gang Sun, Su-yu Liu, Teng-fei Xuan
DOI: 10.1631/FITEE.1900133 Downloaded: 9939 Clicked: 6574 Cited: 0 Commented: 0(p.931-938) <Full Text><PPT> 1735
Yi-shui Li, Xin-hai Chen, Jie Liu, Bo Yang, Chun-ye Gong, Xin-biao Gan, Sheng-guo Li, Han Xu
DOI: 10.1631/FITEE.1900075 Downloaded: 5349 Clicked: 6247 Cited: 0 Commented: 0(p.939-949) <Full Text><PPT> 1734
Sifeu Takougang Kingni, Karthikeyan Rajagopal, Serdar iek, Ashokkumar Srinivasan, Anitha Karthikeyan
DOI: 10.1631/FITEE.1900167 Downloaded: 7037 Clicked: 7501 Cited: 0 Commented: 0(p.950-961) <Full Text>
Erratum
Erratum to: Efficient keyword search over graph-structured data based on minimal covered r-cliques
Asieh Ghanbarpour, Abbas Niknafs, Hassan Naderi
DOI: 10.1631/FITEE.18e0133 Downloaded: 13054 Clicked: 5004 Cited: 0 Commented: 0(p.962-962) <Full Text>