18 NodeLog(vector<float> W0 = vector<float>());
data holding X, y, and Z data
void eval_eqn(State &state)
Evaluates the node symbolically.
NodeLog * rnd_clone_impl() const override
ArrayXf getDerivative(Trace &state, int loc)
NodeLog(vector< float > W0=vector< float >())
NodeLog * clone_impl() const override
void evaluate(const Data &data, State &state)
Safe log: pushes log(abs(x)) or MIN_FLT if x is near zero.
contains various types of State actually used by feat
used for tracing stack outputs for backprop algorithm.