def to_hgraph(self):
from common.hgraph.hgraph import Hgraph
hgraph = Hgraph()
hgraph.my_hyper_graph = self
for node in self.nodes: # type: GraphNode
label = ""
ext_id = None
ident = "_" + node.name
# Insert a node into the AMR
ignoreme = hgraph[ident] # Initialize dictionary for this node
hgraph.node_to_concepts[ident] = label
if ext_id is not None:
if ident in hgraph.external_nodes and hgraph.external_nodes[
ident] != ext_id:
raise Exception(
"Incompatible external node IDs for node %s." % ident)
hgraph.external_nodes[ident] = ext_id
hgraph.rev_external_nodes[ext_id] = ident
if node.is_root:
hgraph.roots.append(ident)
for edge in self.edges: # type: HyperEdge
hyperchild = tuple("_" + node.name for node in edge.nodes[1:])
ident = "_" + edge.nodes[0].name
new_edge = edge.label
hgraph._add_triple(ident, new_edge, hyperchild)
return hgraph
def delete_nodes(graph, nodes):
g = Hgraph()
for p, r, ch in graph.triples():
if (p not in nodes) and (not (len(ch) == 1 and ch[0] in nodes)):
g._add_triple(p, r, ch, warn=False)
else:
if (p not in nodes) and (p not in g):
g[p] = ListMap()
if len(ch) == 1 and (ch[0] not in nodes) and (ch[0] not in g):
g[ch[0]] = ListMap()
g.roots = g.find_roots(warn=False)
return g
def get_line_graph(graph):
lgraph = Hgraph()
edges_for_node = defaultdict(list)
for p, r, ch in graph.triples():
edges_for_node[p].append(str((p, r, ch)))
for c in ch:
edges_for_node[c].append(str((p, r, ch)))
for r in edges_for_node:
for p, c in itertools.combinations(edges_for_node[r], 2):
lgraph._add_triple(p, r, (c, ), warn=False)
lgraph._add_triple(c, r, (p, ), warn=False)
lgraph.roots = lgraph.find_roots()
return lgraph
def rhs_to_hgraph(self):
from common.cfg import NonterminalLabel
from common.hgraph.hgraph import Hgraph
nt_id_count = 0
hgraph = Hgraph()
for node in self.rhs.nodes: # type: GraphNode
label = ""
try:
ext_id = self.lhs.nodes.index(node)
except ValueError:
ext_id = None
ident = "_" + node.name
# Insert a node into the AMR
ignoreme = hgraph[ident] # Initialize dictionary for this node
hgraph.node_to_concepts[ident] = label
if ext_id is not None:
if ident in hgraph.external_nodes and hgraph.external_nodes[
ident] != ext_id:
raise Exception(
"Incompatible external node IDs for node %s." % ident)
hgraph.external_nodes[ident] = ext_id
hgraph.rev_external_nodes[ext_id] = ident
if ext_id == 0:
hgraph.roots.append(ident)
for edge in self.rhs.edges: # type: HyperEdge
hyperchild = tuple("_" + node.name for node in edge.nodes[1:])
ident = "_" + edge.nodes[0].name
if "_" not in edge.label and not edge.label.startswith("ARG") \
and not edge.label.startswith("BV"):
# this is a nonterminal Edge
new_edge = NonterminalLabel(edge.label)
if not new_edge.index:
new_edge.index = "_%i" % nt_id_count
nt_id_count = nt_id_count + 1
else:
new_edge = edge.label
hgraph._add_triple(ident, new_edge, hyperchild)
return hgraph
