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This function obtains an orthant projection.
orthantProject(w, xi)
(numeric,\(n\)) weights and biases data-vector.
A vector of weights and biases containing zero values.
\( P_{O}(X+h)= \{ 0 \quad if \quad X_i(X_i+h_i)<0; \quad X_i+h_i \quad if \quad otherwise\}\)