搜索结果: 16-30 共查到“知识库 数学”相关记录24066条 . 查询时间(1.421 秒)
LARNeXt：基于李代数的端到端残差网络人脸识别
李代数 端到端 残差 网络人脸识别
2023/12/13
Face recognition has always been courted in computer vision and is especially amenable to situations with significant variations between frontal and profile faces. Traditional techniques make great st...
投资者信息、市场势力与福利分析
投资者 市场势力 福利分析
2023/12/13
We study the market for a risky asset in which traders are heterogeneous both in terms of their value for the asset and the information that they have about this value. Traders behave strategically an...
求解偏微分方程的预处理迭代方法是计算数学近四十年的一个热门研究方向， 这一方法得以成功的关键是有效预条件子的构造。有效预条件子的构造和分析是技巧性很强的工作， 尤其是对于具强间断系数的偏微分方程， 比如对此情形多层网格预条件子和重叠区域分解预条件子的最优收敛性在理论上一直没有彻底弄清楚。在2007年R. Hiptmair和J. Xu对麦克斯韦方程提出了“辅助空间预条件子”， 这种预条件子曾引起国际...
在实际工程中,设备往往是由多个不同类型元件或部件构成的集合体,其总体性能退化程度是由内部多种随机退化过程综合影响下的结果.不同于现有文献主要采用无记忆效应的单一线性或非线性形式随机过程模型来描述设备的真实退化,首先建立一种基于分数布朗运动(Fractional Brownian motion,FBM)的混合随机退化模型,用以刻画退化过程中的记忆效应与长期依赖性。
对运行设备安装双贮备设备是实现系统高可靠性的有效方法.在双贮备系统冷/温/热三种贮备模型中,选择哪种贮备模型对系统性能指标和经济指标均有重要影响,因此对如何选择双贮备系统的贮备模型从而使系统性能最优或经济效益最大的问题进行研究具有现实意义。
餐前胰岛素剂量精准决策是改善糖尿病患者血糖管理的关键.临床治疗中胰岛素剂量调整一般在较短时间内完成,具有典型的小样本特征;数据驱动建模在该情形下无法准确学习患者餐后血糖代谢规律,难以确保胰岛素剂量的安全和有效决策.针对这一问题,设计一种临床经验辅助的餐前胰岛素剂量自适应优化决策框架,构建高斯过程血糖预测模型和模型有效性在线评估机制,提出基于历史剂量和临床经验决策约束的贝叶斯优化方法,实现小样本下餐...
模逆隐藏数问题的求解及其应用
模逆 隐藏数问题 求解
2023/12/13
The Modular Inversion Hidden Number Problem (MIHNP), which was proposed at Asiacrypt 2001 by Boneh, Halevi, and Howgrave-Graham, is summarized as follows: Assume that the $\delta $ most significant bi...
一般线性群上随机游动系数的大偏差展式
线性群 随机游动系数 大偏差展式
2023/12/13
Consider $(g_n)_{n\geq 1}$ a sequence of independent and identically distributed random matrices and the left random walk $G_n : = g_n \ldots g_1$ on the general linear group $GL(d, \mathbb R)$. Under...
具有乘性噪声的随机三维Burgers方程的全局适性和正则性
乘性噪声 随机三维Burgers方程 全局适性 正则性
2023/12/13
By utilizing the so-called Doss–Sussman transformation, we link our stochastic 3D Burgers equation with linear multiplicative noise to a random 3D Burger equation. With the help of techniques from par...
Most existing works on optimal filtering of linear time-invariant (LTI) stochastic systems with arbitrary unknown inputs assume perfect knowledge of the covariances of the noises in the filter design....
非自伴Dirac算子的椭圆有限带位势
非自伴 Dirac算子 椭圆 有限带位势
2023/12/13
We present an explicit two-parameter family of finite-band Jacobi elliptic potentials given by $q\equiv A\dn(x;m)$, where $m\in(0,1)$ and $A$ can be taken to be positive without loss of generality, fo...
粗糙边界上斯托克斯系统的高阶边界层和正则性
粗糙边界 斯托克斯系统 高阶边界层 正则性
2023/12/13
In this paper, we study the large-scale boundary regularity for the Stokes system in periodically oscillating John domains. Our main contribution is the construction of boundary layer correctors of ar...
对称椭圆特征值问题的一个局部化的最优预处理Newton-Schur方法
对称椭圆 特征值问题 局部化 最优预处理 Newton-Schur
2023/12/13
A locally optimal preconditioned Newton-Schur method is proposed for solving symmetric elliptic eigenvalue problems. Firstly, the Steklov-Poincaré operator is used to project the eigenvalue problem on...
斜多项式稀疏矩阵乘法
斜多项式 稀疏矩阵 乘法
2023/12/13
Based on the observation that \mathbb{Q}^{(p-1) \times (p-1)} is isomorphic to a quotient skew polynomial ring, we propose a new deterministic algorithm for (p-1)\times(p-1) matrix multiplication over...
人口老龄化、均衡膳食与我国粮食需求
人口老龄化 均衡膳食 粮食需求
2023/12/13
The need to make more accurate grain demand (GD) forecasting has become a major topic in the current international grain security discussion. Our research aims to improve short term GD prediction by e...