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Preliminary discussion on the research and application of univariate linear weighted regression in analytical chemistry [PDF]
, 2023 The paper mainly expounds the principles， differences and selection principles of ordinary least squares and weighted least squares in univariate linear regression， and introduces the application in four aspects， including heteroscedasticity test ...
CHEN Jie +6 more
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Research on vulnerability assessment of coal floor groundwater bursting based on improved local variable weight theory [PDF]
, 2023 In order to more scientifically solve the difficult problem of coal seam floor water inrush prediction and evaluation, first of all, a systematic and comprehensive review and comparison of the previous floor water inrush risk evaluation theories and ...
Shouqiang LIU +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2022 运用截断函数方法以及变指数在加权Sobolev空间中的嵌入关系，通过选取适当的检验函数，证明了一类非线性椭圆方程熵解的存在性。
DAILili(代丽丽)
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Zhejiang Daxue xuebao. Lixue ban, 2023 研究了一类一阶半正周期边值问题u'(t)=λa（t）[f（u（t））-k], t∈[0,1],u(0)=u(1)正解的存在性，其中，k>0为常数，λ>0为参数。权函数a：[0，1]→R为连续函数，f或是定义在[0，∞)上的非负连续函数，满足 f(0)=0且在无穷远处是次线性的，或是定义在(0，∞)上的正连续函数且在0处具有奇异性。运用上下解方法证明了该问题正解的存在性。
杨伟(YANG Wei)
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Zhejiang Daxue xuebao. Lixue ban, 2022 研究了一类特殊情形(m=1)的重心权Hermite有理插值，证明了该插值函数的二阶导数在插值节点和非插值节点处分别以O(h2d-1)和O(h2d-3)的速度收敛于函数f″(x)。数值例子进一步验证了方法的有效性。
KANGNing(康宁), JINGKe(荆科)
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Estimation of weighted Christoffel functions(关于加权Christoffel函数的估计)
Zhejiang Daxue xuebao. Lixue ban, 2001 用初等的方法求出了Legendre权的Christorffel函数的下确界和点态估计式中的常数，并给出了Jacobi权w(x) =(1-x)α（1+x)β的Christoffel函数的下界估计.
ZHANGRen-jiang(章仁江)
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Zhejiang Daxue xuebao. Lixue ban, 2008 主要考虑Müntz系统的有理函数在加权连续函数空间中的稠密性和加权Müntz有理逼近的逼近速度的估计问题.
LUCheng-bo(卢诚波) +1 more
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Zhejiang Daxue xuebao. Lixue ban, 2010 局部加权回归方法(Lowess方法)作为一种较常见的基因芯片数据标准化方法涉及到众多的参数和权函数.对于权函数的选择一直以来都是采用三次权函数.因此本文从误差为重尾型的t分布出发,模拟不同自由度的基因芯片数据,然后选择不同的权函数对这些数据进行Lowess方法标准化,并利用残差平方和、标准化后的M和A值的相关系数及MA图作为评判标准,最终得到相关指标量与权函数的变化关系.
DONGFang-ying(董芳英) +1 more
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Zhejiang Daxue xuebao. Lixue ban, 2022 得到离散时间正规鞅平方可积泛函空间L2(M)中广义计数算子Nh的5种表示：（1）量子Bernoulli噪声（quantum Bernoulli noises，QBN）的加权表示；（2）Nh的谱表示，广义计数算子Nh以h-计数测度#h的值域为其点谱；（3）Nh的“对角化”表示，Nh可表示为L2(M)的标准正交基{Zσ；σ∈Γ}所生成的一维对角化正交投影算子的加权极限；（4）广义Skorohod积分-广义随机梯度表示，Nh可表示为互共轭算子δh和∇h的复合算子；（5）对N上的任意非负函数h ...
ZHOUYulan(周玉兰) +4 more
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Three-three-three network architecture and learning optimization mechanism for B5G/6G [PDF]
, 2021 Aiming at the problem that the future B5G/6G network is a complex intelligent network with large connections, coupled with the comprehensive application of 3G, 4G, 5G and even 6G, the future networks will inevitably become extremely complex, a three ...
Jinkang ZHU, Mingyang CHAI, Wuyang ZHOU
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