Hi all,
I try to solve a non linear equation but it conitnue runiing since 48 hours
now.
``
import sympy as sp
X = sp.MatrixSymbol('X',2,2)
W = sp.MatrixSymbol('W',2,2)
Y = sp.MatrixSymbol('Y',1,2)
W_X = sp.MatMul(W,X.T)
liste = []
for i in range(W_X.shape[0]):
row = []
for j in range(W_X.shape[1]):
row.append(1/(1+sp.exp(-W_X[i,j])))
liste.append(row)
sigmoid = sp.Matrix(liste)
liste = []
for i in range(Y.shape[0]):
row = []
for j in range(Y.shape[1]):
row.append(sp.log(Y[i,j]/(1-Y[i,j])))
liste.append(row)
log_Y = sp.Matrix(liste)
test = sigmoid.inv()
W2 = sp.MatMul(log_Y,test).as_explicit()
liste = []
for index in range(W2.shape[1]):
for i in range(W.shape[0]):
for j in range(W.shape[1]):
liste.append(W2[index].diff(W[i,j]))
p = sp.solve(liste,list(W),check=False,manual=True)
```
Do someone have an idea where i am wrong or if it is from sympy ?
Thanks a lot
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