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Facing Error in CVX_matlab log_normcdf() function

9 次查看（过去 30 天）
SAM Arani
SAM Arani 2022-5-21
in MATLAB Version: 9.12.0.1884302 (R2022a)
Using CVX_Matlab:
CVX: Software for Disciplined Convex Programming (c)2014 CVX Research
Version 3.0beta, Build 1183 (dda2109)
I get Error when using this Code:
clc;clear;close all;
% Load Data From team_data.m file in the directory
team_data;
A1 = sparse(1:m,train(:,1),train(:,3),m,n);
A2 = sparse(1:m,train(:,2),-train(:,3),m,n);
A = A1+A2;
cvx_begin
variable a_hat(n)
minimize(-sum(log_normcdf(A*a_hat/sigma)))
subject to
a_hat >= 0
a_hat <= 1
cvx_end
%%
The Error happens when using --> log_normcdf(A*a_hat/sigma) --->
which says:
****************************************************************
Unrecognized function or variable 'vx'.
Error in cvx_binary_op (line 48)
vx = repmat( reshape( vx, sx ), bx );
Error in - (line 27)
z = cvx_binary_op( P, x, y );
Error in cvx/bsxfun (line 7)
z = func( x, y, varargin{:} );
Error in log_normcdf>log_normcdf_cncv (line 52)
y = bsxfun( @times, a, bsxfun( @minus, b, x ) );
Error in cvx_unary_op (line 29)
y = p.funcs{abs(vu)}( vec(x), varargin{:} );
Error in log_normcdf (line 36)
y = cvx_unary_op( P, x );
****************************************************************
Can anyone help me?

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