code: def beta_linear_log_snr(t):
      return -torch.log(expm1(1e-4 + 10 * (t**2)))
  
imports: import math
  from functools import partial, wraps
  import torch
  import torch.nn
  from einops import repeat
  from torch.special import expm1
  from nemo.collections.multimodal.parts.utils import randn_like
label_desc: Use image node_id 6 for calling a global function with example usage: beta_linear_log_snr(t) and returns: unknown