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nish-ant avatar nish-ant commented on August 23, 2024 1

I think you are referring the code for the identification problem (discussed in Part II of the paper) whereas you need to refer the code for the inference problem (Part I).

The points are selected at random from the whole domain in the identification problem:

PINNs/appendix/continuous_time_identification (Burgers)/Burgers.py

Lines 178 to 180 in 0542794

idx = np.random.choice(X_star.shape[0], N_u, replace=False)
X_u_train = X_star[idx,:]
u_train = u_star[idx,:]

whereas only the solution at the boundaries is used in the inference problem (indices 0:1 and -1: correspond to the boundary data):

PINNs/appendix/continuous_time_inference (Burgers)/Burgers.py

Lines 164 to 167 in 0542794

xx2 = np.hstack((X[:,0:1], T[:,0:1]))
uu2 = Exact[:,0:1]
xx3 = np.hstack((X[:,-1:], T[:,-1:]))
uu3 = Exact[:,-1:]

from pinns.

Aiswaryamg avatar Aiswaryamg commented on August 23, 2024

Oh yes. Thank you.

from pinns.

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