class_docstr: Tests for ViT+ utilities.
class_docstr_tok: ["Tests","for","ViT+","utilities","."]
code: def test_init_classification_bias(
      self, prior_prob, expected_init_bias
  ):
      bias = jnp.zeros((1))
      init_bias = utils.init_classification_bias(bias, prior_prob)
      self.assertAlmostEqual(expected_init_bias, init_bias[0])
  
file_path: scenic/scenic/projects/owl_vit/tests/utils_test.py
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import jax
  import jax.numpy
  import numpy
  from scenic.projects.owl_vit import utils
label_desc: Use image node_id 6 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_init_classification_bias(prior_prob, expected_init_bias) without return types