搜索结果: 1-15 共查到“理学 Fisher”相关记录56条 . 查询时间(0.084 秒)
鲁东大学数学与统计科学学院多元统计分析课件 Fisher判别分析。
CHANGES IN VELOCITY OF FISHER GLACIER, EAST ANTARCTICA USING PIXEL TRACKING METHOD
Glacier velocity image matching Antarctica COSI-corr
2019/2/28
Glacier movement is a crucial factor for assessing cryospheric climate change. Traditional methods of field surveys for studying glacier movement and velocity are often not possible owing to inaccessi...
融合Fisher线性判别分析的多维特征融合情景感知推荐方法
多特征融合 Fisher线性判别分析 属性偏好 时间衰减 情景感知推荐
2017/8/22
针对采用单维特征建立用户的偏好模型所导致的推荐结果无法有效覆盖用户潜在偏好特征而影响推荐质量的问题,提出了一种基于Fisher线性判别分析的多维特征融合情景感知推荐方法。该方法建立了包含时间衰减度、属性偏好、偏好可影响程度等多维特征的偏好样本空间;采用特征融合、投影变换等方法,在最佳鉴别矢量空间基于Fisher判别准则融合用户的多维特征;采用拉格朗日乘子法求解最优投影方向,建立起多维特征优化的偏好...
基于Fisher信息对称的信息完全测量研究进展
量子测量 Fisher信息对称 量子态
2021/9/1
量子测量，作为提取信息的基本手段，是量子信息论中一个基本而重要的概念。量子态层析是指通过对多份同一未知量子态进行量子测量，再利用测量获取的信息对量子态进行估计，以确定真实量子态的过程。如何选择量子测量以有效地获取量子态的信息是量子态层析中的一个核心问题。理想的量子测量方案中涉及的量子测量算子要尽可能少，并且在实验中要易于实现。
视频：河南师范大学数学与信息科学学院高等数理统计教学录像第七讲 Fisher信息与充分统计量
视频 河南师范大学数学与信息科学学院 高等数理统计 教学录像 第七讲 Fisher信息与充分统计量
2016/12/12
视频：河南师范大学数学与信息科学学院高等数理统计教学录像第七讲 Fisher信息与充分统计量。
Professor Steven A. Fisher，Department of Microbiology & Immunology at University of Maryland（图）
Professor Steven A. Fisher Department of Microbiology & Immunology at University of Maryland
2015/12/31
Professor Steven A. Fisher，Department of Microbiology & Immunology at University of Maryland,Dr. Fisher’s research interests revolve around the regulation of gene expression in relation to (a) vascula...
NEW MULTICATEGORY BOOSTING ALGORITHMS BASED ON MULTICATEGORY FISHER-CONSISTENT LOSSES
MULTICATEGORY BOOSTING ALGORITHMS MULTICATEGORY FISHER-CONSISTENT LOSSES
2015/8/21
Fisher-consistent loss functions play a fundamental role in the construction of successful binary margin-based classifiers. In this paper we establish the Fisher-consistency condition for multicategor...
Traveling waves for the Keller-Segel system with Fisher birth terms
Chemotaxis Traveling waves Keller-Segel system Reaction diffusion systems Nonlinear stability
2015/7/14
We consider the traveling wave problem for the one dimensional Keller-Segel system with a birth term of either a Fisher/KPP type or with a truncation for small population densities. We prove that ther...
The non-local Fisher-KPP equation:traveling waves and steady states
non-local Fisher-KPP equation traveling waves steady states
2015/7/14
We consider the Fisher-KPP equation with a nonlocal saturation effect defined through an interaction kernel φ(x) and investigate the possible differences with the standard Fisher-KPP equation. Our fir...
Existence and Non-existence of Fisher-KPP Transition Fronts
Existence Non-existence Fisher-KPP
2015/7/14
We consider Fisher-KPP-type reaction-diffusion equations with spatially inhomogeneous reaction rates. We show that a sufficiently strong localized inhomogeneity may prevent existence of transition-fro...
A short proof of the logarithmic Bramson correction in Fisher-KPP equations
logarithmic Bramson correction Fisher-KPP equations
2015/7/14
In this paper, we explain in simple PDE terms a famous result of Bramson about the logarithmic delay of the position of the solutions u(t, x) of Fisher-KPP reaction-diffusion equations in R, with resp...
Power-like delay in time inhomogeneous Fisher-KPP equations
Power-like delay time inhomogeneous Fisher-KPP equations
2015/7/14
We consider solutions of the KPP equation with a time-dependent diffusivity of the formσ(t/T). For an initial condition that is compactly supported, we show that when σ(s) is increasing in time the fr...
On the nonlocal Fisher-KPP equation:steady states,spreading speed and global bounds
nonlocal Fisher-KPP equation steady states spreading speed global bounds
2015/7/14
We consider the Fisher-KPP equation with a non-local interaction term. We establish a condition on the interaction that allows for existence of non-constant periodic solutions,and prove uniform upper ...
Professor Daniel S. Fisher,Department of Applied Physics at Stanford University（图）
Department of Applied Physics at Stanford University Professor Biophysics Condensed Matter
2015/6/9
Daniel S. Fisher,Professor,Department of Applied Physics at Stanford University.He is Research areas:Biophysics, Condensed Matter, Statistical Physics.Selected Publications:High-Throughput S...
Professor Ian R. Fisher,Department of Applied Physics at Stanford University（图）
Department of Applied Physics at Stanford University Professor Condensed Matter
2015/6/9
Ian R. Fisher,Professor,Department of Applied Physics at Stanford University.He is Research areas:Condensed Matter.Selected Publications:Evidence for charge Kondo effect in superconducting Tl-doped Pb...