code: def get_salsa_kernel_from_params(
      kernel_type, add_order, kernel_scale, bandwidths, problem_dim
  ):
      """Returns the kernel for SALSA."""
      if kernel_type == "se":
          return ESPKernelSE(
              problem_dim, kernel_scale, add_order, bandwidths
          )
      elif kernel_type.startswith("matern"):
          nu = float(kernel_type[-3:])
          nu_vals = [nu] * problem_dim
          return ESPKernelMatern(
              problem_dim, nu_vals, kernel_scale, add_order, bandwidths
          )
      else:
          raise ValueError("Unknown kernel type %s." % (kernel_type))
  
imports: from __future__ import print_function
  import numpy
  from scipy.linalg import solve_triangular
label_desc: Use image node_id 7 for calling a global function with example usage: get_salsa_kernel_from_params(kernel_type, add_order, kernel_scale, bandwidths, problem_dim) and returns: ESPKernelSE, ESPKernelMatern