scheme which is the Hessian relative to the size of the gradient because the gradient multiplied by your movement is your change in F that's why it's a relative measure yeah so which Darby are measured that has some potential because still the size of the everything is just awesome Park is the only parameter moving is f so then the norm doesn't matter but the the size of the parameter depends on that sorry you should be L to a spectrum but everything in that paper pretend so the only thing changing us out sure but