code: def _get_stride_signal(strides, bias_val, decay):
      """A signal using the strides."""
      strides = np.array(_get_vals_wo_None(strides))
      return np.exp(-decay * abs(strides.mean() - bias_val))
  
file_path: dragonfly/dragonfly/nn/syn_nn_functions.py
imports: import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: _get_stride_signal(strides, bias_val, decay) and returns: np