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# Chantrea Lean

Active since 2015

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Question

how can we know the optimal solution from GA in MATLAB is the best solution? if all the results are always different from each other after run it in several times.
the optimum solutions from GA are always different after I run it in several time, so I wonder that which one is the best soluti...

7 years ago | 2 answers | 0

### 2

Question

Why GA becomes error when we try to click running in second time?
I wonder when I try to run the program optimization using GA in second time ,It becomes error but it will be running after i cli...

7 years ago | 1 answer | 0

### 1

Question

why the analytic hessian has affected to the convergence rate in fmincon using interior-point method?
I want to know the mathematics model in interior point method? why the analytic hessian has affected to the convergence rate?

7 years ago | 1 answer | 0

### 1

Question

how can we obtain the golobal minimum? in case nonconvex optimization using fmincon.
in case our constraint functions are nonconvex how can we obtain the global minimun using fmincon?

7 years ago | 1 answer | 0

### 1

Question

how can we check convex or nonconvex feasible?
example if i have 20 constraints functions.These functions cut the objective function and create the feasible region. Their inte...

7 years ago | 0 answers | 0

### 0

Question

Is there anyway to check the convexity and nonconvexity of functions in MATLAB?
I want to check the convexity and nonconvexity of functions.

7 years ago | 1 answer | 0

### 1

Question

Is there any way to derive the analytic gradient of constraint function in "fmincon" or we have to input it manually ?
Dear sir, i have worked on optimization problem using command fmincon,and i have to input the analytic gradient of constraint...

7 years ago | 1 answer | 0

### 1

Question

can we create other function to call the constraint function or create gradient of constraint function without input directly from other source in fmincon?
Dear sir, I have worked with fmincon when i try to input the gradient of constraint function it's okay when it was small prob...

7 years ago | 1 answer | 0

### 1

Question

why do we need the analytic gradient in fmincon?
Dear sir, I wondered that using command "fmincon" in matlab without analytic gradient and with analytic gradient we got the s...

7 years ago | 1 answer | 0