error variance 误差方差,误差离散,机误变量 expense variance 费用差异 mean of variance 方差平均 standard variance n.标准方差 相似单词 variance n.[C,U] 1. 变化幅度;差额 2.【数】方差 ♦ at variance with sb./sth. 看法不一,矛盾,冲突 noise n. 1.[C,U]噪音,杂讯,响声,喧闹 2.[pl]...
... y received signal 接收信号 noise variance 噪声方差 A code distance matrix 码距矩阵 ... www1.huachu.com.cn|基于2个网页 例句 释义: 全部,噪声离散,噪声离散声,噪声方差 更多例句筛选 1. The two image parameters, SNR and noise variance, are estimated using different techniques and are ...
noise, bias, variance nancy2019 狡猾的猫偏差大,欠拟合 方差大,过拟合 偏差(bias)大,造成欠拟合;方差(variance)大,散的太开,造成过拟合。编辑于 2023-03-08 11:20・IP 属地天津 机器学习 赞同添加评论 分享喜欢收藏申请转载 ...
偏差Bias和方差Variance是分别从两个视角来表达与描述学习训练到的现实模型与真实模型之间的差距,尽可能多的学习训练的目的是为了让得到的现实模型尽可能地接近真实模型。 在深度神经网络和深度学习中,经常要用到三个数学量,即偏差Bias、方差Variance和噪声Noise,它们分别是什么呢? 一、偏差Bias 它是指预测结果值与真实...
偏差(bias)、方..对于一个预测问题,若真实模型为f(x)f(oldsymbol{x})f(x). 通常我们通过对特定的数据集D=(x1,y1),(
ance Noise Variance Autocovariance Noise VarianceAutocovariance Noise Variance
The paper presents a fast and simple method for estimating the variance of additive zero mean Gaussian noise in an image. The method can also be used to give a local estimate of the noise variance in the situation in which the noise variance varies across the image. It requires only the ...
We also provide an upper bound of the individually optimum receiver performance under noise variance mismatch. Thus we give a theoretical justification for the usual bias towards noise variance underestimation adopted by the community. 展开 关键词: channel estimation code division multiple access error ...
Accurate signal-to-noise ratio (SNR) and noise variance estimation are extremely important aspects of receiver design in multiple-input multiple-output (MIMO) systems. Typically, these parameters are estimated using known pilot/training symbols. However, significant improvements may be made by using bo...
In this study, the noise variance and channel estimation problems are investigated over the UWB channel with narrowband interference (NBI). We first give two ways to construct the samples of noise variance using the least square (LS) channel estimates, by which we model the estimation problem of...