code: def quantization_int8(x, s, z):
      x_q = quantization(x, s, z, alpha_q=-128, beta_q=127)
      x_q = x_q.astype(jnp.int8)
  
      return x_q
  
imports: import typing
  from functools import partial
  import jax
  import jax.numpy
  import matplotlib.pyplot
  import numpy
  import optax
  from datasets import load_dataset
  from flax.experimental import nnx
label_desc: Use image node_id 13 for calling a global function with example usage: quantization_int8(x, s, z) and returns: x_q