def __init__(self):
        super(HierarchicalOrderedDict, self).__init__()
        self.base = OrderedDict()
Calculates an ordered sequence of rules terminating with the given
dataset/ETHPy150Open duerrp/pyexperiment/pyexperiment/utils/HierarchicalMapping.py/HierarchicalOrderedDict.__init__--crossover with--dataset/ETHPy150Open google/anvil-build/anvil/graph.py/RuleGraph.calculate_rule_sequence