其实cvx工具箱中有很多专属的数学运算表达式,例如关于变量的次方符号(^)是不允许的,需要替换为pow_pos(x,n)。下面列出一些常见的替换表达式: 1.平方/次方表达式2.矩阵范数、log函数3.cvx除法(cvx最麻烦、最容易出错的表达式)4.其他小技巧七、常见错误
pow_pos(inv_pos(lamda_B1(1,n)),2) <= 2 * lamda_B(1,n) * (lamda_B1(1,n) - lamda_B(1,n))... + (lamda_B(1,n))^2 + (norm(V_B(:,n))/v0)^2 + 2/v0^2 * V_B(:,n)' * (V_B1(:,n) - V_B(:,n)); end for d = 1 : D for n = 1 : N renzhi2(...
‡pow_pos(x,p) \(\max\{x,0\}^p\)for\(x\in\mathbf{R}\)and\(p\geq 1\). Convex and nondecreasing. ‡pow_p(x,p) for\(x\in\mathbf{R}\)and real constant\(p\), computes nonnegative convex and concave branches of the power function: ...
目标函数代码是 maximize(log(pow_pos(1 + C * inv_pos(B + sum(x)), B + sum(x)))报错信...
目标函数代码是 maximize(log(pow_pos(1 + C * inv_pos(B + sum(x)), B + sum(x)))报错信...
functioninv_pos(x), defined as\(1/x\)for\(x>0\)and\(\infty\)otherwise, for the convex portion of\(1/x\); CVX recognizes this function as convex and nonincreasing. In CVX, you can express the concave portion of\(1/x\), where\(x\)is negative, using-inv_pos(-x), which will...
‡pow_pos(x,p) \max\{x,0\}^pforx\in\mathbf{R}andp\geq 1. Convex and nondecreasing. ‡pow_p(x,p) forx\in\mathbf{R}and real constantp, computes nonnegative convex and concave branches of the power function: \begin{array}{ccl} p\leq 0 & f_p(x) \triangleq \begin{cases}...
=0和∞,对应的是函数1/x的凸部分。CVX将该函数识别为凸且⾮递增的函数。在CVX中,您可以使⽤-inv_pos(-x)来表⽰函数1/x 的凹部分,其中x为负,⽽且该函数可以被CVX正确地识别为凹且⾮递增的函数。 对于带有多个参数的函数,曲率被联合考虑,但是单调性还是针对⼀个个参数分别考虑。举个例⼦,函数...
cvx_begin variables x_1 y_1 phi_0 = (T2*inv_pos((1-x_1-(x_1.*T2))) phi_1 = T2*inv_pos(1-y_1-(y_1.*T2)) phi_2 = T2*inv_pos(1-y_1-(y_1.*T2)) T = ((R_1.*((a*inv_pos((b.*phi_0)+(a))...
错误使用 .* Disciplined convex programming error: Cannot perform the operation: {convex} .* {convex} 出错 * (第 36 行) z = feval( oper, x, y ); 出错 Energy_BCD (第 78 行) power_fly(l) = c1pow_pos(norms(V1(:,l),2),3)+(c2inv_…