class_docstr: Calculates the representations by passing the features through a single-layer ReLU neural network.
  :param relu_size: int or None
  The number of nodes in the ReLU layer. If None, the layer will be of size 4*n_components.
code: def __init__(self, relu_size=None):
      self.relu_size = relu_size
  
imports: import abc
  import tensorflow
label_desc: Use image node_id 1 to create a new ReLURepresentationGraph object from inherited base classes: AbstractRepresentationGraph with example: obj = ReLURepresentationGraph(relu_size)