S-TRANSFORM

作品数:33被引量:60H指数:4
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相关作者:陆惠玲张金明杜正聪胥德平马宏斌更多>>
相关机构:宁夏医科大学北方民族大学沈阳化工大学太原科技大学更多>>
相关期刊:《物联网技术》《Digital Communications and Networks》《光学精密工程》《Science China Mathematics》更多>>
相关基金:国家自然科学基金黑龙江省自然科学基金更多>>
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Cauchy-Stieltjes Kernel Families and Free Multiplicative Convolution
《Communications in Mathematics and Statistics》2024年第4期679-694,共16页Raouf Fakhfakh Abdelhamid Hassairi 
supported by the Deanship of Scientific Research at Jouf University through research Grant No.(DSR-2021-03-03188).
In this paper,we determine the effect of the free multiplicative convolution on the pseudo-variance function of a Cauchy-Stieltjes kernel family.We then use the machinery of variance functions to establish some limit ...
关键词:Variance function Cauchy kernel Free multiplicative convolution S-TRANSFORM 
DRT Net:面向特征增强的双残差Res-Transformer肺炎识别模型
《光学精密工程》2024年第5期714-726,共13页周涛 彭彩月 杜玉虎 党培 刘凤珍 陆惠玲 
国家自然科学基金资助项目(No.62062003);宁夏自然科学基金资助项目(No.2022AAC03149)。
针对肺部X射线图像的病灶区域较小、形状复杂,与正常组织间的边界模糊,使得肺炎图像中的病灶特征提取不充分的问题,提出了一个面向特征增强的双残差Res-Transformer肺炎识别模型,设计3种不同的特征增强策略对模型特征提取能力进行增强...
关键词:肺炎识别 X射线图像 特征增强 双残差结构 Transformer 
M^(3)Res-Transformer:新冠肺炎胸部X-ray图像识别模型被引量:3
《电子学报》2024年第2期589-601,共13页周涛 刘赟璨 侯森宝 常晓玉 叶鑫宇 陆惠玲 
国家自然科学基金(No.62062003);宁夏自治区重点研发计划(No.2020BEB04022);北方民族大学研究生创新项目(No.YCX22198,No.YCX22190)。
新冠肺炎(COVID-19)自爆发以来严重影响人类生命健康,近年来残差神经网络广泛应用于COVID-19识别任务中,辅助医生快速地诊断COVID-19患者,但是COVID-19图像病变区域形状复杂、大小不一,与周围组织的边界模糊,导致网络难以提取有效特征....
关键词:COVID-19 胸部X-ray图像 残差神经网络 vision transformer 注意力机制 
基于Res-Transformer模型的语音情感识别方法研究被引量:2
《物联网技术》2023年第6期36-39,44,共5页刘方如 王亮 
针对语音情感识别中数据样本不足、识别准确率不高等问题,本文将深度残差网络(Resnet)和Transformer模型相结合,设计了一种基于Resnet结构和Transformer结构的Res-Transformer模型,该模型由两个并行的Resnet结构和Transformer编码器结...
关键词:语音情感识别 深度残差网络 Transformer编码器 MFCC特征 高斯白噪声 中心损失函数 
一种基于FAS-Transformer的人脸防伪方法
《黑龙江大学自然科学学报》2023年第3期369-378,共10页魏鑫 马宏斌 王英丽 
黑龙江省自然科学基金(YQ2020F012);装备重大基础研究项目。
针对人脸防伪方法在应对不同表征攻击和未知表征攻击时,普遍存在有效性和泛化性差的问题,提出了一种人脸防伪方法。将在自然语言处理领域应用的注意力机制引入人脸防伪任务,获取特征之间的成对相似性关系,提升方法的有效性和泛化性。针...
关键词:注意力机制 人脸防伪 迁移学习 FAS-Transformer 
Recognition of Hybrid PQ Disturbances Based on Multi-Resolution S-Transform and Decision Tree
《Energy Engineering》2023年第5期1133-1148,共16页Feng Zhao Di Liao Xiaoqiang Chen Ying Wang 
Foundation of China(No.52067013);the Key Natural Science Fund Project of Gansu Provincial Department of Science and Technology(No.21JR7RA280);the Tianyou Innovation Team Science Foundation of Intelligent Power Supply and State Perception for Rail Transit(No.TY202010);the Natural Science Foundation of Gansu Province(No.20JR5RA395).
Aiming at the problems of multiple types of power quality composite disturbances,strong feature correlation and high recognition error rate,a method of power quality composite disturbances identification based on mult...
关键词:Hybrid power quality disturbances disturbances recognition multi-resolution S-transform decision tree 
Identification Method for Users-Transformer Relationship in Station Area Based on Local Selective Combination in Parallel Outlier Ensembles Algorithm
《Energy Engineering》2023年第3期681-700,共20页Yunlong Ma Junwei Niu Bo Xu Xingtao Song Wei Huang Guoqiang Sun 
In the power distribution system,the missing or incorrect file of users-transformer relationship(UTR)in lowvoltage station area(LVSA)will affect the leanmanagement of the LVSA,and the operation andmaintenance of the d...
关键词:Low-voltage station area users-transformer relationship identification line loss ensemble learning LSCP algorithm 
High impedance fault detection in distribution network based on S-transform and average singular entropy被引量:3
《Global Energy Interconnection》2023年第1期64-80,共17页Xiaofeng Zeng Wei Gao Gengjie Yang 
financial supported by the Natural Science Foundation of Fujian,China(2021J01633).
When a high impedance fault(HIF)occurs in a distribution network,the detection efficiency of traditional protection devices is strongly limited by the weak fault information.In this study,a method based on S-transform...
关键词:High impedance fault(HIF) Wavelet packet transform(WPT) S-transform(ST) Singular entropy(SE) 
Time-extracting S-transform algorithm and its application in rolling bearing fault diagnosis被引量:5
《Science China(Technological Sciences)》2022年第4期932-942,共11页XU YongGang WANG Liang HU AiJun YU Gang 
supported by the National Natural Science Foundation of China (Grant Nos. 51775005 and 51675009)
Time-frequency(TF)analysis(TFA)is one of the effective methods to deal with non-stationary signals.Due to their advantages,many experts and scholars have recently developed post-processing algorithms based on traditio...
关键词:time-extracting S-transform time-frequency analysis pulse signal fault diagnosis short-time Fourier transform 
Study on Azimuth Variation of Airgun Signal Propagation
《Earthquake Research in China》2019年第4期557-572,共16页HE Suge ZHOU Qingyun 
the Science for Earthquake Resilience of China Earthquake Administration(XH18042Y);the Science and Technology Special Project of Yunnan Earthquake Agency(2018ZX02)
Based on the data recorded by the observation network during the intensive excitation period from November to December 2015 at Binchuan Earthquake Signal Transmitting Seismic Station(BESTSS)in Yunnan Province,the nois...
关键词:Airgun source Azimuth change S-TRANSFORM Template matched filtering Crustal medium change 
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