Checkpoint some set-up for optimization by Newton's method.
Checkpoint the logistical regression cost function.
Remember to initialize itsTheta to the zero vector.
Checkpoint Hessian calculation.
Fuss.
Algorithm is broken downstream of the cost function.
Bug fix: itsTheta = itsPriorTheta - h.inv() * g;
Subtract the Hessian's inverse applied to the gradient from the prior.
Complete the exercise.