Optimization Stableset Error about qiskit-aqua HOT 5 CLOSED

Hi, the issue should come from the potential issue fixed by c92b777. (The created Operator is not valid)

do you mind checking that does QAOA encounter this issue after this commit?

Thanks.

from qiskit-aqua.

Hi, the issue should come from the potential issue fixed by c92b777. (The created Operator is not valid)

do you mind checking that does QAOA encounter this issue after this commit?

Thanks.

I tried it with QAOA and VQE and it gave the same error message as before.
Also, I tried different minimizer functions form scipy, such as TNC, and got the same error message as before.

from qiskit-aqua.

What version of qiskit are you using? With the latest Aqua master, that it seems you are using, the latest qiskit master is reqd. With the above fix, using the logic you provided, I can run ExactEigensolver and VQE to completion. QAOA also runs, but at size 10 I encounter a performance problem, it runs at smaller graph sizes ok and I do not see any of the issues you reported above.

from qiskit-aqua.

I tried this on a different computer, using only qiskit and qiskit_aqua files directly from the Github repository, and it did work for ExactEigensolver, VQE, and QAOA. Although I had to use QAOA.Variational in place of QAOA. And given that I didn't optimize the number of steps, the results weren't accurate, but I didn't encounter the error. Thanks!
As an aside, what is the difference between QAOA.Variational and QAOA?

from qiskit-aqua.

We renamed and re-organized algorithms since the last official release. What we then called QAOA became QAOA.Variational as it uses a variational approach but its the same algorithm. As things are now working for you I will close this issue.

from qiskit-aqua.