% linear regression -> y=theta0 + theta1*x % parameter: x:m*n theta:n*1 y:m*1 (m=4,n=1) % %Data x=[1;2;3;4]; y=[1.1;2.2;2.7;3.8]; m=size(x,1); hypothesis = h_func(x,theta); delta = hypothesis - y; jVal=sum(delta.^2); gradient(1)=sum(del...
% parameter for linear regression to fit the data points in X and y % Initialize some useful values m = length(y); % number of training examples % You need to return the following variables correctly J = 0;% === YOUR CODE HERE === % Instructions: Compute the cost of a particula...
Ramesh (2011), A MATLABTM code to perform weighted linear regression with (correlated or uncorrelated) errors in bivariate data, J Geol Soc India, 77(4), 377-380.Thirumalai, K., Singh, A., Ramesh, R.: A matlabTM code to perform weighted linear regression with (correlated or uncorrelated...
网格搜索linear regression 网格搜索法matlab程序 目录 1.“成功-失败”法,又称进退法 2.黄金分割法,又称0.618法 3.二分法 4.Newton法 5.二次插值法 通过五种方法实现全局极小值点的求解。其中,“成功-失败法”是试探法;区间收缩法,包括二分法、0.618法;函数逼近法,包括Newton法、二次插值法。 1.“成功-失败...
% parameter for linear regression to fit the data points in X and y % Initialize some useful values m = length(y); % number of training examples % You need to return the following variables correctly J = 0; % === YOUR CODE HERE === % Instructions: Compute the cost of a particu...
regr = linear_model.LinearRegression() #建立模型 regr.fit(x, y) # 训练 # 获取回归的系数。 print(regr.coef_) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 2.3 结果 然后得到薪资和其他自变量的关系:这里展现各自变量求得的系数: 3 算例2 ...
One such application is the fitting of trend lines for a given data set so as to interpret the relationship of the variance of the parameters involved. We provide here a code in MATLAB that performs the weighted linear regression with (correlated or uncorrelated) errors in bivariate data which...
MATLAB Workshop 15 - Linear Regression in MATLAB 线性回归分析
legend('Training data', 'Linear regression') hold off % don't overlay any more plots on this figure fprintf('Program paused. Press enter to continue.\n'); pause; %% === Part 4: Visualizing J(theta_0, theta_1) === fprintf('Visualizing J(theta_0...
Matlab实现线性回归和逻辑回归_ Linear Regression & Logistic Regression - Rachel Zhang的专栏