def grad_l
import bend-ml-tensor-array@0.1.19.0/main.bend as BendMlTensorArrayimport Base
371def grad_l(ps: List<&2, F32>, +label: Nat, +j: Nat, +nf: F32) -> List<&2, F32>:
372 match ps:
373 case Nil{}:
374 Nil{}
375 case Con{+h, t}:
376 (((h - hit(Nat.is_eq(label, j)) : F32) / nf) : F32) <> grad_l(t, label, 1n+j, nf)