国家自然科学基金(10501026)

作品数:8被引量:2H指数:1
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相关作者:叶培新宋占杰曾守桢宋艳霞胡玉梅更多>>
相关机构:南开大学天津大学更多>>
相关期刊:《南开大学学报(自然科学版)》《Science China Mathematics》《Acta Mathematica Scientia》《Transactions of Tianjin University》更多>>
相关主题:APPROXIMATIONQUERY光滑模英文MINIMAL更多>>
相关领域:理学自动化与计算机技术电子电信更多>>
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QUANTUM COMPLEXITY OF THE APPROXIMATION FOR THE CLASSES B(W_p^r([0,1]~d)) AND B(H_p^r([0,1]~d))
《Acta Mathematica Scientia》2010年第5期1808-1818,共11页叶培新 胡晓菲 
Supported by the Natural Science Foundation of China(10501026,60675010,10971251)
We study the approximation of functions from anisotropic Sobolev classes b(WpR([0, 1]d)) and HSlder-Nikolskii classes B(HPr([0, 1]d)) in the Lq ([0, 1]d) norm with q 〈 p in the quantum model of computation....
关键词:quantum approximation anisotropic classes minimal query error 
Greedy Algorithm in m-Term Approximation for Periodic Besov Class with Mixed Smoothness
《Transactions of Tianjin University》2009年第1期75-78,共4页宋占杰 叶培新 
Supported by National Natural Science Foundation of China (No. 60872161, 10501026, 60675010 and 10626029);Natural Science Foundation of Tianjin (No. 08JCYBJC09600);China Postdoctoral Science Foundation ( No. 20070420708).
Nonlinear m-term approximation plays an important role in machine learning, signal processing and statistical estimating. In this paper by means of a nondecreasing dominated function, a greedy adaptive compression num...
关键词:greedy algorithm m -term approximation Besov space mixed smoothness 
确定性信号的Poisson过程与局部平均采样逼近
《天津大学学报》2008年第12期1518-1520,共3页胡玉梅 叶培新 宋艳霞 赵冠楠 
国家自然科学基金资助项目(10501026,60675010,10626029,60572113);天津市自然科学基金资助项目(08JCYBJC09600)
用新的Ditzian光滑模和统一的新型K泛函导出了利用Poisson过程及局部平均采样定义的Szász-Kantorovich算子逼近确定性信号的强逆不等式,进而给出了[0,∞)上的有界连续函数的光滑性与Szász-Kantorovich算子逼近误差的渐近关系.
关键词:POISSON过程 局部平均采样 Szasz—Kantorovich型算子 统一的K泛函 光滑模 
Optimal query error of quantum approximation on some Sobolev classes被引量:2
《Science China Mathematics》2008年第9期1664-1678,共15页SONG ZhanJie YE PeiXin 
supported by the National Natural Science Foundation of China (Grant Nos. 10501026, 60675010,10626029 and 60572113);the China Postdoctoral Science Foundation (Grant No. 20070420708)
We study the approximation of the imbedding of functions from anisotropic and generalized Sobolev classes into L q ([0, 1]d) space in the quantum model of computation. Based on the quantum algorithms for approximation...
关键词:quantum approximation Sobolev classes n-th minimal query error 41A63 65D15 
序列空间上的可乘等距与渐进可乘等距(英文)
《数学进展》2008年第4期489-493,共5页安桂梅 
NSFC(No.10571090,No.10501026);The Innovation Foundation of Nankai University;LPMC.
本文证明了(l^(β_n))的单位球面间的非满等距在一定条件下可被线性等距延拓至全空间。并刻画了l^p(p>0)上的非满渐进可乘等距算子.
关键词:可乘等距 渐进可乘等距 序列空间 
Generalized Sampling Series Approximation of Random Signals from Local Averages
《Transactions of Tianjin University》2007年第1期8-11,共4页宋占杰 何改云 叶培新 杨德运 
National Natural Science Foundation of China (No60572113,No10501026) and Liuhui Center for Applied Mathematics
Signals are often of random character since they cannot bear any information if they are predictable for any time t, they are usually modelled as stationary random processes .On the other hand, because of the inertia ...
关键词:stochastic processes local averages generalized sampling series 
Optimal error bound of restricted Monte Carlo integration on anisotropic Sobolev classes被引量:1
《Progress in Natural Science:Materials International》2006年第6期588-593,共6页GAO Wenhua YE Peixin WANG Hui 
Supported by National Natural Science Foundation of China (Grant Nos. 10261007 and 10501026)Tianyuan Fund for Mathematics (Grant No.10426020) and the fund of Nankai University
We study the restricted Monte Carlo integration error for anisotropie Sobolev classes. Results prove that with O(log2 n ) random bits we have the optimal order for the n-th minimal Monte Carlo integration error with...
关键词:Monte Carlo integration random bits anisotropic Sobolev classes. 
Szász-Kantorovick概率型算子的点态估计(英文)
《南开大学学报(自然科学版)》2006年第6期90-94,共5页宋占杰 曾守桢 叶培新 
Supported by NNSF of China(60572113,10501026)and the Liuhui Center for Applied Math
利用新的Ditzian光滑模导出了Szász-Kantorovick概率型算子的点态估计.
关键词:泊松过程 概率型算子 点态估计 光滑模 
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