public Tensor[] Step(Graph.Graph f, Tensor[] x) { var res = new Tensor[x.Length]; var fhs = _f.Step(f, x, false); var bhs = _f.Step(f, x, true); for (var i = 0; i < x.Length; i++) { res[i] = f.Concat(fhs[i], bhs[i]); } return(res); }