Old engine for Continuous Time Bayesian Networks. Superseded by reCTBN. 🐍
https://github.com/madlabunimib/PyCTBN
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79 lines
2.7 KiB
79 lines
2.7 KiB
"""
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Consistently ordered variants of the default base classes.
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Note that if you are using Python 3.6+, you shouldn't need these classes
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because the dicts in Python 3.6+ are ordered.
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Note also that there are many differing expectations for the word "ordered"
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and that these classes may not provide the order you expect.
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The intent here is to give a consistent order not a particular order.
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The Ordered (Di/Multi/MultiDi) Graphs give a consistent order for reporting of
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nodes and edges. The order of node reporting agrees with node adding, but for
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edges, the order is not necessarily the order that the edges were added.
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In general, you should use the default (i.e., unordered) graph classes.
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However, there are times (e.g., when testing) when you may need the
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order preserved.
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Special care is required when using subgraphs of the Ordered classes.
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The order of nodes in the subclass is not necessarily the same order
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as the original class. In general it is probably better to avoid using
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subgraphs and replace with code similar to:
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.. code-block:: python
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# instead of SG = G.subgraph(ordered_nodes)
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SG = nx.OrderedGraph()
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SG.add_nodes_from(ordered_nodes)
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SG.add_edges_from((u, v) for (u, v) in G.edges() if u in SG if v in SG)
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"""
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from collections import OrderedDict
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from .graph import Graph
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from .multigraph import MultiGraph
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from .digraph import DiGraph
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from .multidigraph import MultiDiGraph
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__all__ = []
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__all__.extend(
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["OrderedGraph", "OrderedDiGraph", "OrderedMultiGraph", "OrderedMultiDiGraph"]
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)
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class OrderedGraph(Graph):
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"""Consistently ordered variant of :class:`~networkx.Graph`."""
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node_dict_factory = OrderedDict
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adjlist_outer_dict_factory = OrderedDict
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adjlist_inner_dict_factory = OrderedDict
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edge_attr_dict_factory = OrderedDict
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class OrderedDiGraph(DiGraph):
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"""Consistently ordered variant of :class:`~networkx.DiGraph`."""
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node_dict_factory = OrderedDict
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adjlist_outer_dict_factory = OrderedDict
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adjlist_inner_dict_factory = OrderedDict
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edge_attr_dict_factory = OrderedDict
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class OrderedMultiGraph(MultiGraph):
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"""Consistently ordered variant of :class:`~networkx.MultiGraph`."""
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node_dict_factory = OrderedDict
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adjlist_outer_dict_factory = OrderedDict
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adjlist_inner_dict_factory = OrderedDict
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edge_key_dict_factory = OrderedDict
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edge_attr_dict_factory = OrderedDict
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class OrderedMultiDiGraph(MultiDiGraph):
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"""Consistently ordered variant of :class:`~networkx.MultiDiGraph`."""
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node_dict_factory = OrderedDict
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adjlist_outer_dict_factory = OrderedDict
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adjlist_inner_dict_factory = OrderedDict
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edge_key_dict_factory = OrderedDict
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edge_attr_dict_factory = OrderedDict
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