def initialise_bias(params):
    """Function to initialise the neuron input biases to 1.0"""
    outputs_l_j = []

    # plus one for input layer
    for _ in range(len(params['hidden_nodes']) + 1):
        outputs_l_j.append([1.0])

    # set 0 output on first output neuron layer to None as this won't have bias
    outputs_l_j.append([None])

    return outputs_l_j