linear regression(2)-Gradient Descent for Multiple Variables

Gradient Descent For Multiple Variables

The gradient descent equation itself is generally the

repeat until convergence:{θ0:=θ0−α1m∑i=1m(hθ(x(i))−y(i))⋅x0(i)θ1:=θ1−α1m∑i=1m(hθ(x(i))−y(i))⋅x1(i)θ2:=θ2−α1m∑i=1m(hθ(x(i))−y(i))⋅x2(i)⋯}

=

repeat until convergence:{θj:=θj−α1m∑i=1m(hθ(x(i))−y(i))⋅xj(i)for j := 0...n}