Documentation error (typo) at https://nvidia.github.io/cudaqx/api/solvers/cpp_api.html#_CPPv4N5cudaq5optim6cobylaE

[zaikunzhang]

Hello,

It seems that the text at

https://nvidia.github.io/cudaqx/api/solvers/cpp_api.html#_CPPv4N5cudaq5optim6cobylaE

is not finished --- it shows only "The."

I suggest correcting it to

The COBYLA derivative-free black-box function optimizer from the [PRIMA](https://www.libprima.net) library.

It might be better to indicate that the COBYLA used here comes from the PRIMA library rather than the Fortran-77 version (excuse me for mentioning this as the author of PRIMA). The reasons are as follows.

• The PRIMA version of COBYLA is significantly different from the Fortran-77 version due to the variables rho and delta and other changes, including the bug fixes.

• As a result of the above-mentioned differences, the behavior of the PRIMA COBYLA differs a lot from the Fortran-77 COBYLA. In general, the former produces better solutions while using fewer function evaluations, leading to considerable improvements. Thus, it is important to note that PRIMA is not simply a copy or direct translation of the Fortran 77 code.

• As a professor, I am glad to make my work open-source and free. All I need is that my work is mentioned explicitly when it turns out to be useful to others. This is crucial for the sustainability of the open-source projects by professors, because software development is not well recognized in academia despite its importance and the significant efforts it requires.

Thanks and regards,
Zaikun

[zaikunzhang]

Thank you @melody-ren very much for handling this.