def clear(self): """ /*! * @brief Clears the node map. */ """ self.__forward_map = [undefined_node() for i in range(len(self.__forward_map))] self.__backward_map = [undefined_node() for i in range(len(self.__backward_map))]
def pre_image(self, node):
if node < len(self._backward_map):
return self._backward_map[node]
else:
raise Exception(
'The node with ID ', str(node),
' is not contained in the target nodes of the node map.')
return undefined_node()
def as_relation(self, relation):
relation.clear()
for i in range(0, len(self._forward_map)):
k = self._forward_map[i]
if k != undefined_node():
relation.append(tuple((i, k)))
for k in range(0, len(self._backward_map)):
i = self._backward_map[k]
if i == dummy_node():
relation.append(tuple((i, k)))
def __init__(self, num_nodes_g, num_nodes_h):
self._forward_map = [undefined_node()] * num_nodes_g
self._backward_map = [undefined_node()] * num_nodes_h
self._induced_cost = np.inf