Mistakes in Trid function

[gbelouze]

Two mistakes

• the latex formula should read r"f(\mathbf{x})=\sum_{i=1}^{d}(x_i-1)^2-\sum_{i=2}^{d}(x_ix_{i-1})"
• the evaluation formula should be np.sum((X - 1) ** 2) - np.sum(X[1:] * X[:-1])

[AxelThevenot]

Hello,

Thank you for the issues

I have note so much time now so if you want you can make a Pull Request and I'll review it ☺️

[gbelouze]

Hi,
Of course ! I'm still in the process of validating all functions, as I am using them for research purposes (thank you for this repository btw). Once I think I am through with all the issues, I will make a PR that corrects them all at once :)

[AxelThevenot]

Thank you very much for the review

There are so many functions that I might have made a lot of mistakes so it is a great help !

[AxelThevenot]

And what research purpose if it is not secret ? ☺️

[gbelouze]

You can read about it here, if you're interested about the use case of your implementation: https://github.com/gbelouze/forward-gradient (it also links to the associated paper)