CENTROIDS

作品数：8被引量：16H指数：3
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相关领域：自动化与计算机技术更多>>
相关作者：朱晓荣更多>>
相关机构：南京邮电大学江南大学更多>>
相关期刊：《Journal of Ocean University of China》《Chinese Physics B》《Journal of Mountain Science》《Chinese Physics Letters》更多>>
相关基金：国家自然科学基金江苏省高校自然科学研究项目更多>>
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Comparison of different sampling strategies for debris flow susceptibility mapping: A case study using the centroids of the scarp area, flowing area and accumulation area of debris flow watersheds被引量：3
《Journal of Mountain Science》2021年第6期1476-1488,共13页GAO Rui-yuan WANG Chang-ming LIANG Zhu 
This work was supported by National Natural Science Foundation of China(Grant no.41972267 and no.41572257);Graduate Innovation Fund of Jilin University(Grant no.101832020CX232)。
The quality of debris flow susceptibility mapping varies with sampling strategies. This paper aims at comparing three sampling strategies and determining the optimal one to sample the debris flow watersheds. The three...
关键词：Debris flow Artificial neural network Support vector machine Random forest SUSCEPTIBILITY Sampling strategy 
基于数据挖掘的RPMA低功耗广域网网络规划方法被引量：3
《通信学报》2019年第3期28-35,共8页朱晓荣 沈瑶 
江苏省研究生科研实践创新计划基金资助项目(No.KYCX17_0766);国家自然科学基金资助项目(No.61871237);江苏省高校自然科学研究重大项目基金资助项目(No.16KJA510005)~~
针对RPMA低功耗广域网基站密度大、业务分布不均匀等特点,提出了一种基于数据挖掘的网络规划方法。首先,利用提升回归树算法建立了信号质量预测模型,用于提取网络的覆盖分布空间模式;然后,针对覆盖分布空间模式,采用加权k-centroids分...
关键词：低功耗广域网 提升回归树 加权k-centroids 基站部署 
Spatio-temporal analysis of the geographical centroids for three major crops in China from 1949 to 2014被引量：3
《Journal of Geographical Sciences》2018年第11期1672-1684,共13页范玲玲 梁社芳 陈浩 胡亚南 张小飞 刘珍环 吴文斌 杨鹏 
National Key Research and Development Program of China,No.2017YFD0300201;National Natural Science Foundation of China,No.41401116;Ministry of Finance of China through the Non-Profit National Research Institute,No.Y2017JC30;Field Strategic Research Project of Medium and Long-Term Development Strategy of China’s Engineering Science and Technology,No.2016-ZCQ-08
Spatial distribution changes in major crops can reveal important information about cropping systems. Here, a new centroid method that applies physics and mathematics to spatial pattern analysis in agriculture is propo...
关键词：geographical centroid rice MAIZE WHEAT China 
Centroids analysis for circle of confusion in reverse Hartmann test
《Chinese Physics B》2017年第5期43-51,共9页赵柱 惠梅 夏峥铮 赵跃进 
Project supported by the National Natural Science Foundation of China(Grant No.61475018)
The point spread function（PSF） is investigated in order to study the centroids algorithm in a reverse Hartmann test（RHT） system. Instead of the diffractive Airy disk in previous researches, the intensity of PSF be...
关键词：confusion circle averaged fringe pixel fitted segmental Hartmann compensation fitting 
Centroid-based sifting for empirical mode decomposition被引量：1
《Journal of Zhejiang University-Science C(Computers and Electronics)》2011年第2期88-95,共8页Hong HONG Xin-long WANG Zhi-yong TAO Shuan-ping DU 
Project supported by the National Natural Science Foundation of China (No. 10574070);the State Key Laboratory Foundation of China (No. 9140C240207060C24)
A novel sifting method based on the concept of the 'local centroids' of a signal is developed for empirical mode decomposition (EMD), with the aim of reducing the mode-mixing effect and decomposing those modes whose f...
关键词：SIFTING Empirical mode decomposition (EMD) Mode mixing effect Frequency resolution Local centroids Noise resistance 
Advances in Studies and Applications of Centroidal Voronoi Tessellations被引量：6
《Numerical Mathematics(Theory,Methods and Applications)》2010年第2期119-142,共24页Qiang Du Max Gunzburger Lili Ju 
supported by the US Department of Energy Office of Science Climate Change Prediction Program through grant numbers DE-FG02-07ER64431 and DE-FG02-07ER64432;the US National Science Foundation under grant numbers DMS-0609575 and DMS-0913491
Centroidal Voronoi tessellations(CVTs) have become a useful tool in many applications ranging from geometric modeling,image and data analysis,and numerical partial differential equations,to problems in physics,astroph...
关键词：Voronoi tessellations CENTROIDS CLUSTERING mesh generation and optimization IMAGEPROCESSING model reduction point sampling. 
Franck-Condon factors and γ-Centroids for the A^1 ∑^＋ u-X^1∑^＋ 9 Band System of ^107,109Ag2： Comparison of the Observed and Calculated Absorption Band Strengths
《Chinese Physics Letters》2007年第9期2566-2568,共3页A.Antic-Jovanovic M.Kuzmanovic V.Bojovic Murtadha A.Khakoo Russ R.Laher 
Franck-Condon factors and r-centrolds for the, A^1 ∑^＋ u-X^1∑^＋ 9 band system of ^107,109Ag2 are computed using Morse and Rydberg-Klein-Rees potentials for both lower and upper electronic states. The differences ...
A Preliminary Study on the Relation Between the Thermal and Geometric Surface Centroids of the Western Pacific Warm Pool
《Journal of Ocean University of China》2006年第2期91-98,共8页FANG Mingqiang 
This study has been supported by the Doctoral Startup Foundation of 0cean University of China(2003);partly by the Natural Science Foundation of China(No.40506035).The author is thankful to the NCDC for the SST data.The author also thanks the reviewers for their very valuable suggestions.
Numerous published results have showr the importance of the Wcstern Pacific Warm Pool （WPWP）surface centroid movement in ENSO-（EI Nino/Southcrn Oscillation）rclated studies .Howcver,some rccent research conclusions...
关键词：Western Pacific Warm Pool （WPWP） ENSO thermal centroid geometric centroid mass centroid 
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