最小均方误差 (Least Mean Squares)：线性回归中，我们的目标是通过调整参数 [公式] 使模型 [公式] 的输出与目标值 [公式] 接近，同时最小化误差函数 [公式]。由于误差函数是关于 [formula] 的二次函数，存在唯一最优解 [formula]。通过顺序算法或在线算法，每次迭代只考虑一个数据点，通常使用梯度...
Unified model and ill-posed property of numerical iterative formula for solving nonlinear least squares problem; 非线性最小二乘问题数值迭代法的统一模型及其不适定性 更多例句>> 4) linear least square method 线性最小二乘法 1. This paper analyses the systemetic error of calculating formula of ext...
Least-Squares Methods For Linear Elasticity Based On A Discrete Negative Norm The purpose of this paper is to develop and analyze least-squares approximations for elasticity problems. The major advantage of the least-square formulati... JH Bramble,RD Lazarov,E Pasciak 被引量: 2发表: 1999年 DI...
Gradient vector of the cost function Batch Gradient Descent,Notice that this formula involves calculations over thefull training set X, at each Gradient Descent step! This is why the algorithm is called Batch Gradient Descent: it uses the whole batch of training data at every step (actually, Fu...
1.1. Function: yk(x)=wkTx+wk0, for1≤k≤K , ifyk(x)>yj(x),∀j≠k,x∈Ck 1.2. Formula for 2 classes: min||x0−x||2s.t.wTx+w0=0 , wherewis weight/projection vector,w0is bias,xis input vector. And ify(x)>0,x∈Class1, else ify(x)<0,x∈Class2. Decision boundary...
This paper analyses the systemetic error of calculating formula of extremum detection depth method of undergound metal pipe detector,fites for experimental data by means of linear least square method and obtains the modifying factor of the formula. 本文首先分析了沿用已久的电磁式地下金属管线探测仪极...
It should be noted that when the total non-linear model is represented in the neural network structure of Figure 1, the parameter estimation of the model can be described as the training of neural network weight by minimizing the error 𝐸(𝑡)E(t) in Formula (5). In order to train ...
Tip If you need linear least-squares fitting for custom equations, chooseLinear Fitting. If you don’t know if your equation can be expressed as a set of linear functions, then chooseCustom Equationinstead. SeeSelecting a Custom Equation Fit Interactively. ...
Several other applications of the scattering framework are presented, including doubling formulas for the error covariance, a change of initial conditions formula, equations for a backwards Markov state model and a new derivation of the Chandrasekhar-type equations for the constant parameter case. The ...
This paper proposes an algorithm for the synthesis/optimization of microstructures based on an exact formula for the topological derivative of the macrosco... S Amstutz,SM Giusti,AA Novotny,... - 《International Journal for Numerical Methods in Engineering》 被引量: 107发表: 2010年 A hybridizab...