code: def test_initialize_alpha(self):
      kernel = RQKernel()
      kernel.initialize(alpha=3.0)
      actual_value = torch.tensor(3.0).view_as(kernel.alpha)
      self.assertLess(torch.norm(kernel.alpha - actual_value), 1e-5)
  
file_path: gpytorch/test/kernels/test_rq_kernel.py
imports: import math
  import unittest
  import torch
  from gpytorch.kernels import RQKernel
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 12 for calling the TestRQKernel obj's underlying member method code with example usage: obj.test_initialize_alpha() without return types