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| import torch | |
| import numpy as np | |
| from botorch.test_functions.synthetic import Rosenbrock | |
| device = torch.device("cpu") | |
| dtype = torch.double | |
| def RosenbrockND(individuals): | |
| # assert torch.is_tensor(individuals) and individuals.size(1) == 10, "Input must be an n-by-10 PyTorch tensor." | |
| ############################################################################# | |
| ############################################################################# | |
| # Set function here: | |
| dimm = individuals.shape[1] | |
| fun = Rosenbrock(dim=dimm, negate=True) | |
| fun.bounds[0, :].fill_(-5.0) | |
| fun.bounds[1, :].fill_(10.0) | |
| dim = fun.dim | |
| lb, ub = fun.bounds | |
| ############################################################################# | |
| ############################################################################# | |
| n = individuals.size(0) | |
| fx = fun(individuals) | |
| fx = fx.reshape((n, 1)) | |
| ############################################################################# | |
| ## Constraints | |
| # gx1 = torch.sum(individuals,1) # sigma(x) <= 0 | |
| # gx1 = gx1.reshape((n, 1)) | |
| # gx2 = torch.norm(individuals, p=2, dim=1)-5 # norm_2(x) -3 <= 0 | |
| # gx2 = gx2.reshape((n, 1)) | |
| # gx = torch.cat((gx1, gx2), 1) | |
| ############################################################################# | |
| return 0, fx | |
| # return gx, fx | |
| def RosenbrockND_Scaling(X): | |
| # assert torch.is_tensor(X) and X.size(1) == 10, "Input must be an n-by-10 PyTorch tensor." | |
| X_scaled = X*15-5 | |
| return X_scaled | |