def test_unweighted(self):
edges = [(1, 2), (2, 3), (2, 4), (3, 5), (5, 6), (5, 7)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
edges = [(1, 2), (2, 3), (3, 4), (4, 5), (1, 3), (1, 5), (3, 5)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
def test_unweighted(self):
edges = [(1, 2), (2, 3), (2, 4), (3, 5), (5, 6), (5, 7)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
edges = [(1, 2), (2, 3), (3, 4), (4, 5), (1, 3), (1, 5), (3, 5)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
def test_unweighted(self):
edges = [(1, 2), (2, 3), (2, 4), (3, 5), (5, 6), (5, 7)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
edges = [(1, 2), (2, 3), (3, 4), (4, 5), (1, 3), (1, 5), (3, 5)]
G = nx.DiGraph(edges)
assert_equal(nx.dag_longest_path_length(G), 4)
# test degenerate graphs
G = nx.DiGraph()
G.add_node(1)
assert_equal(nx.dag_longest_path_length(G), 0)
def test_unweighted(self):
edges = [(1, 2), (2, 3), (2, 4), (3, 5), (5, 6), (5, 7)]
G = nx.DiGraph(edges)
assert nx.dag_longest_path_length(G) == 4
edges = [(1, 2), (2, 3), (3, 4), (4, 5), (1, 3), (1, 5), (3, 5)]
G = nx.DiGraph(edges)
assert nx.dag_longest_path_length(G) == 4
# test degenerate graphs
G = nx.DiGraph()
G.add_node(1)
assert nx.dag_longest_path_length(G) == 0
def report_max_delay(
self
): #a function to report the maximum delay based on the longest path of the graph
if self.g is None:
self._update_load_capacitance()
self._create_graph()
return nx.dag_longest_path_length(self.g)
def sta(self, tg):
"""A vanilla STA routine.
Only annotates the arrival and required times of nodes.
Required times of sinks are set to the length of the
longest path, while the arrival times of sources are set
to zero.
Edge delay key is assumed to be "td" and arrival time
is annotated with "ta" while required time is annotated
with "tr".
Parameters
----------
tg : networkx.DiGraph
Graph on which we want to run the STA.
Returns
-------
Critical path delay.
"""
cpd = nx.dag_longest_path_length(tg, weight="td")
topo_nodes = list(nx.topological_sort(tg))
rev_topo_nodes = reversed(topo_nodes)
for v in topo_nodes:
tg.node[v]["ta"] = max([tg.node[u]["ta"] + tg[u][v]["td"]\
for u in tg.pred[v]] + [0])
for u in rev_topo_nodes:
tg.node[u]["tr"] = min([tg.node[v]["tr"] - tg[u][v]["td"]\
for v in tg[u]] + [cpd])
return cpd
def rbc(graph):
"""Rbc computation."""
a = np.where(nx.adj_matrix(graph).toarray() > 0, 1, 0)
g = nx.DiGraph(a)
if nx.is_directed_acyclic_graph(g):
k = nx.dag_longest_path_length(g)
beta = 0.95
else:
lamb = max(np.linalg.eig(a)[0])
if lamb != 0:
beta = 0.95 / lamb
else:
beta = 0.95
k = 10
n = g.number_of_nodes()
ones = np.ones(n)
ba = beta * a
ba_t = np.transpose(ba)
x = np.zeros([n, k * 2])
for i in range(1, k + 1):
x[:, i - 1] = np.dot(np.linalg.matrix_power(ba, i), ones)
x[:, i + k - 1] = np.dot(np.linalg.matrix_power(ba_t, i), ones)
x_norm = normalize(x, axis=1)
y = np.matmul(x_norm, np.transpose(x_norm))
return nx.Graph(y)
def get_skip_lengths(system):
"""
:param system: a system
:return: length of skip connection for each projection in the system, i.e. the length
of the longest path between the nodes
"""
import networkx as nx
g = system.make_graph()
for u, v, d in g.edges(data=True):
d['weight'] = -1
lengths = {}
for pop in system.populations:
lengths[pop.name] = nx.bellman_ford(g, pop.name)
result = []
for p in system.projections:
result.append(-lengths[p.origin.name][1][p.termination.name])
# print some additional information ...
print('longest skip connection: {}'.format(max(result)))
for i in range(len(system.projections)):
if result[i] == max(result):
print([
system.projections[i].origin.name,
system.projections[i].termination.name
])
print('longest path: {}'.format(nx.dag_longest_path_length(g)))
print(nx.dag_longest_path(g))
return result
def sim_lch(H, G, i, j):
# medindo o menor caminho do grafo nao direcionado
#G_undirected = G.to_undirected()
#shortest_path = shortest_path_length(G_undirected, i, j)
shortest_path = sim_spath(H, i, j)
print('shortest_path:' + str(shortest_path))
#print('*********************************************')
#print('i'+str(i))
#print('j'+str(j))
# calcula profundidade do grafo
Depth_ontology = nx.dag_longest_path_length(G)
print('Depth_ontology: ' + str(Depth_ontology))
# formula:
Qlch = shortest_path / (2 * Depth_ontology)
print('Quociente lch: ' + str(Qlch))
if (i == j):
sim_lch = 1.0
else:
sim_lch = -math.log10(Qlch)
print('lch: ' + str(sim_lch))
if i == j:
sim_lch = 1.0
#print('sim_lch'+str(sim_lch))
return (sim_lch)
def main():
args = parse_args()
print("Making subgraph of significant hits in", args.infile)
# Load heritability and graph
targets = load_herits(args.infile, args.max_herit, args.pval_cutoff)
graph = nx.read_gexf(args.graphfile)
# Get sets of terminal significant ones and their ancestors
ancestors = set()
nodes = set(graph.nodes())
added = 0
for t in targets:
if t not in nodes: continue # Skip any hits that aren't targets
added += 1
for a in nx.ancestors(graph, t):
ancestors.add(a)
print("\tAdded ancestors of", added, "nodes to look for")
# Make subgraph
subgraph = graph.subgraph(targets | ancestors)
print("Subgraph has", len(subgraph.nodes()), "nodes of the original",
len(graph.nodes()))
# Output
subgraph = subgraph.reverse(
) #Flip so individual nodes have arrows toward their supercategory, not vice-versa
nx.write_gexf(subgraph, args.outprefix + ".gexf")
nx.draw_networkx(subgraph)
plt.savefig(args.outprefix + ".png")
# Debugging stuff
print("Longest path legnth is", nx.dag_longest_path_length(graph))
print("Longest path is", nx.dag_longest_path(graph))
def sim_lch(G, i, j):
# medindo o menor caminho do grafo nao direcionado
G_undirected = G.to_undirected()
shortest_path = shortest_path_length(G_undirected, i, j)
#print('*********************************************')
#print('i'+str(i))
#print('j'+str(j))
#print('shortest_path'+str(shortest_path))
# calcula profundidade do grafo
Depth_ontology = nx.dag_longest_path_length(G)
#print('Depth_ontology'+str(Depth_ontology))
# formula:
lch = shortest_path / (2 * Depth_ontology)
#print('lch'+str(lch))
if (lch == 0):
sim_lch = 1.0
else:
sim_lch = -math.log10(lch)
if i == j:
sim_lch = 1.0
#print('sim_lch'+str(sim_lch))
return (sim_lch)
def compute_criticalities(self):
"""Computes the exponentiated edge criticalities,
used for movement weighing.
Parameters
----------
None
Returns
-------
None
"""
cpd = nx.dag_longest_path_length(self.tg, weight="td")
topo_nodes = list(nx.topological_sort(self.tg))
rev_topo_nodes = reversed(topo_nodes)
for v in topo_nodes:
self.tg.node[v]["ta"] = max([self.tg.node[u]["ta"] + self.tg[u][v]["td"]\
for u in self.tg.pred[v]] + [0])
for u in rev_topo_nodes:
self.tg.node[u]["tr"] = min([self.tg.node[v]["tr"] - self.tg[u][v]["td"]\
for v in self.tg[u]] + [cpd])
for u, v in self.tg.edges():
slack = self.tg.node[v]["tr"] - self.tg.node[u]["ta"] - self.tg[u][
v]["td"]
crit = 1 - float(slack) / cpd
self.tg[u][v]["t_weight"] = crit**CRIT_EXP
def build_graph(root, current_location, max_depth):
if len(queue) == 0:
return
longest_depth = nx.dag_longest_path_length(graph, root)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
char_system_info_req = esiapp.op['get_universe_systems_system_id'](
system_id=current_location)
char_system_info = esiclient.request(char_system_info_req).data
system_stargates = char_system_info['stargates']
for stargate in system_stargates:
char_system_stargate = esiapp.op['get_universe_stargates_stargate_id'](
stargate_id=stargate)
char_system_stargate = esiclient.request(char_system_stargate).data
stargate_destination = str(
char_system_stargate['destination']['system_id'])
nodes = list(graph.nodes)
# We want to avoid cycles if we want to use dag_longest_path_length, so we want to work with destination that
# are not in the graph yet
if (stargate_destination not in nodes):
print('{} -> {}'.format(current_location, stargate_destination))
graph.add_edge(current_location, stargate_destination)
longest_depth = nx.dag_longest_path_length(graph, root)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
else:
queue.append(stargate_destination)
queue.pop(0)
longest_depth = nx.dag_longest_path_length(graph, root)
print(longest_depth)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
stargate_destination = queue[0]
build_graph(root, stargate_destination, max_depth)
def topology_stages(logical_plan):
"""Return the number of stages in a logical plan."""
graph = networkx.DiGraph(
(input_info["component_name"], bolt_name)
for bolt_name, bolt_info in logical_plan.get("bolts", {}).items()
for input_info in bolt_info["inputs"])
# this is is the same as "diameter" if treating the topology as an undirected graph
return networkx.dag_longest_path_length(graph)
def topology_stages(logical_plan: TopologyInfoLogicalPlan) -> int:
"""Return the number of stages in a logical plan."""
graph = networkx.DiGraph(
(input_info.component_name, bolt_name)
for bolt_name, bolt_info in logical_plan.bolts.items()
for input_info in bolt_info.inputs)
# this is is the same as "diameter" if treating the topology as an undirected graph
return networkx.dag_longest_path_length(graph)
def dijkstraPathExample(fileName="./" + SUBDIRNAME + "/dijkstraSP.png"):
print()
G = nx.DiGraph()
G.add_weighted_edges_from([
(0, 1, 5.0),
(0, 4, 9.0),
(0, 7, 8.0),
(1, 2, 12.0),
(1, 3, 15.0),
(1, 7, 4.0),
(2, 3, 3.0),
(2, 6, 11.0),
(3, 6, 9.0),
(4, 5, 4.0),
(4, 6, 20.0),
(4, 7, 5.0),
(5, 2, 1.0),
(5, 6, 13.0),
(7, 5, 6.0),
(7, 2, 7.0),
])
sourceNode = 0
sp = nx.single_source_dijkstra_path(G, sourceNode)
spL = nx.single_source_dijkstra_path_length(G, sourceNode)
finalEdgeTo = {}
print('Shortest paths and weights')
print('Node\tedgeTo\tWeight')
for node in sorted(sp):
# if (node != sourceNode):
print(str(node) + '\t' + str(sp[node]) + '\t\t' + str(spL[node]))
if (node != sourceNode):
finalEdgeTo[(sp[node][-2], sp[node][-1])] = {
"sp" + str(sourceNode): 'sp' + str(sourceNode)
}
# print (str(node) + '\t' + str((sp[node][-2], sp[node][-1]))+'\t'+str(spL[node]))
nx.set_edge_attributes(G, finalEdgeTo)
print('updated graph')
print(G.edges.data())
print('Calculating longest path using Topological sort if DAG')
print('Is DAG: ' + str(nx.is_directed_acyclic_graph(G)))
if (nx.is_directed_acyclic_graph(G)):
print('Longest Path')
print(nx.dag_longest_path(G))
print('Longest Path Weight')
print(nx.dag_longest_path_length(G))
labels = nx.get_edge_attributes(G, 'sp0')
pos = nx.spring_layout(G)
nx.draw_networkx_edge_labels(G, pos, edge_labels=labels)
nx.draw(G, pos, with_labels=True, font_weight='bold')
print("Saving file to " + str(fileName))
plt.savefig(fileName)
print()
def find_max_distance(wn, pos, relation):
graph = DiGraph()
for synset_id, synset in wn.dat(pos).items():
graph.add_node(synset_id)
for id_of_synset_in_relation, relation_name in synset.ilrs:
if relation_name == relation:
graph.add_node(id_of_synset_in_relation)
graph.add_edge(id_of_synset_in_relation, synset.wnid)
return dag_longest_path_length(graph)
def add_longest_ancestor_distance(graph: nx.DiGraph):
"""Add the longest ancestor distance to all nodes in the graph."""
log.info('longest path length: {}'.format(
max(nx.dag_longest_path_length(graph) + 1, 1)))
for node in nx.topological_sort(graph):
max_dist_predecessors = [graph.nodes[predecessor]['max_pred_dist'] + 1
for predecessor in graph.predecessors(node)]
graph.nodes[node]['max_pred_dist'] = max(max_dist_predecessors,
default=0)
def build_graph(root, current_location, max_depth):
if len(queue) == 0:
return
longest_depth = nx.dag_longest_path_length(graph, root)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
system_stargates = []
for stargate in data['stargates']:
curr_stargate = data['stargates'][stargate]
if curr_stargate['system_id'] == int(current_location):
system_stargates.append(curr_stargate)
for stargate in system_stargates:
stargate_destination = str(stargate['destination']['system_id'])
nodes = list(graph.nodes)
# We want to avoid cycles if we want to use dag_longest_path_length, so we want to work with destination that
# are not in the graph yet
if (stargate_destination not in nodes):
print('{} -> {}'.format(current_location, stargate_destination))
graph.add_edge(current_location, stargate_destination)
longest_depth = nx.dag_longest_path_length(graph, root)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
else:
queue.append(stargate_destination)
queue.pop(0)
longest_depth = nx.dag_longest_path_length(graph, root)
print(longest_depth)
if longest_depth > max_depth:
path = nx.dag_longest_path(graph, root)
graph.remove_node(path[-1])
return
stargate_destination = queue[0]
build_graph(root, stargate_destination, max_depth)
def swc_stats(filename, scale='mum', log=False):
a = pd.read_csv(filename, sep=' ', header=None, comment='#')
X = a.values
if X.shape[1] > 7:
X = X[:, X.shape[1] - 7:]
G = nx.DiGraph()
distance = 0
surface_area = 0
volume = 0
for i in range(X.shape[0]):
if X[i, 6] != -1:
G.add_node(i)
parent = np.where(X[:, 0] == X[i, 6])[0][0]
x_parent = X[parent, 2:5]
x = X[i, 2:5]
h = np.sqrt(np.sum(np.square(x_parent - x)))
G.add_edge(parent, i, weight=h)
distance += h
r_parent = X[parent, 5]
r = X[i, 5]
surface_area += np.pi * (r + r_parent) * np.sqrt(
np.square(r - r_parent) + np.square(h))
volume += np.pi / 3. * (r * r + r * r_parent +
r_parent * r_parent) * h
XX = X[:, 2:5]
w = np.abs(np.max(XX[:, 0]) - np.min(XX[:, 0]))
h = np.abs(np.max(XX[:, 1]) - np.min(XX[:, 1]))
d = np.abs(np.max(XX[:, 2]) - np.min(XX[:, 2]))
bifurcations = len(X[:, 6]) - len(np.unique(X[:, 6]))
max_euclidean_dist = np.max(pdist(XX))
max_path_dist = nx.dag_longest_path_length(G)
if log == True:
print('Total Length: ', distance, scale)
print('Total Surface Area: ', surface_area, scale + '^2')
print('Total Volume: ', volume, scale + '^3')
print('Maximum Euclidean Distance: ', max_euclidean_dist, scale)
print('Width (Orientation Variant): ', w, scale)
print('Height (Orientation Variant): ', h, scale)
print('Depth (Orientation Variant): ', d, scale)
print('Average Diameter: ', 2 * np.mean(X[:, 5]), scale)
print('Number of Bifurcations:', bifurcations)
print('Max Path Distance: ', max_path_dist, scale)
results = {}
results['Total Length'] = distance
results['Total Surface Area'] = surface_area
results['Total Volume'] = volume
results['Maximum Euclidean Distance'] = max_euclidean_dist
results['Width (Orientation Variant)'] = w
results['Height (Orientation Variant)'] = h
results['Depth (Orientation Variant)'] = d
results['Average Diameter'] = 2 * np.mean(X[:, 5])
results['Number of Bifurcations'] = bifurcations
results['Max Path Distance'] = max_path_dist
return results
def test_changing_shape():
"""Ensure the node adding/removing example works."""
random.seed(42)
engine = shape_changing_graph.create_engine()
# should be 3x3 before
print(list(engine.graph.degree()))
max_K = max(v for k, v in engine.graph.degree())
assert max_K == shape_changing_graph.GRAPH_K + 1
max_D = dag_longest_path_length(engine.graph) + 1
assert max_D == shape_changing_graph.GRAPH_D
for _ in zip(range(100), engine):
pass
# shape should change
max_K = max(v for k, v in engine.graph.degree())
assert max_K != shape_changing_graph.GRAPH_K + 1
max_D = dag_longest_path_length(engine.graph) + 1
assert max_D != shape_changing_graph.GRAPH_D
def depth(self):
"""Return the circuit depth.
Returns:
int: the circuit depth
Raises:
DAGCircuitError: if not a directed acyclic graph
"""
if not nx.is_directed_acyclic_graph(self._multi_graph):
raise DAGCircuitError("not a DAG")
depth = nx.dag_longest_path_length(self._multi_graph) - 1
return depth if depth != -1 else 0
def graph_stats(G):
total_nodes = G.number_of_nodes()
# print('Total nodes is %d' % total_nodes)
total_edges = G.number_of_edges()
# print('Total edges is %d' % total_edges)
biomaterialNodes = [
x for x, y in G.nodes(data=True) if y['entity_type'] == "biomaterial"
]
biomaterialNodes.sort()
biomaterial_out_degrees = [x[1] for x in G.out_degree(biomaterialNodes)]
# print('Biomaterial node outdegrees are: ', *biomaterial_out_degrees)
biomaterial_in_degrees = [x[1] for x in G.in_degree(biomaterialNodes)]
# print('Biomaterial node indegrees are: ', *biomaterial_in_degrees)
processNodes = [
x for x, y in G.nodes(data=True) if y['entity_type'] == "process"
]
processNodes.sort()
process_out_degrees = [x[1] for x in G.out_degree(processNodes)]
# print('Process node outdegrees are: ', *process_out_degrees)
process_in_degrees = [x[1] for x in G.in_degree(processNodes)]
# print('Process node indegrees are: ', *process_in_degrees)
fileNodes = [
x for x, y in G.nodes(data=True) if y['entity_type'] == "file"
]
fileNodes.sort()
file_out_degrees = [x[1] for x in G.out_degree(fileNodes)]
# print('File node outdegrees are: ', *file_out_degrees)
file_in_degrees = [x[1] for x in G.in_degree(fileNodes)]
# print('File node indegrees are: ', *file_in_degrees)
max_depth = nx.dag_longest_path_length(G)
# print('Max depth is %d' % max_depth)
# print('\n')
features = {
'totalNodes': total_nodes,
'totalEdges': total_edges,
'maxDepth': max_depth,
'nodeList': ",".join(str(x) for x in sorted(list(set(G)))),
'biomaterialOutdegrees':
",".join(str(x) for x in biomaterial_out_degrees),
'biomaterialIndegrees':
",".join(str(x) for x in biomaterial_in_degrees),
'processOutdegrees': ",".join(str(x) for x in process_out_degrees),
'processIndegrees': ",".join(str(x) for x in process_in_degrees),
'fileOutdegrees': ",".join(str(x) for x in file_out_degrees),
'fileIndegrees': ",".join(str(x) for x in file_in_degrees)
}
return features
def sim_lch(G, node1, node2):
# medindo o menor caminho do grafo nao direcionado
G_undirected = G.to_undirected()
shortest_path = nx.shortest_path_length(G_undirected, node1, node2)
# calcula profundidade do grafo
Depth_ontology = nx.dag_longest_path_length(G)
# formula:
sim_lch = -math.log( shortest_path / (2 * Depth_ontology))
return sim_lch
def _bfs_tree(G):
# twice BFS in undirected acyclic graph (Tree) to find endnodes
# bfs for longest path is performed in Directed Tree
endnodes = [x for x in G.nodes() if G.degree(x) == 1]
DiTree1 = nx.traversal.bfs_tree(G, endnodes[0])
SG1 = G.subgraph(nx.dag_longest_path(DiTree1, weight=weight))
new_root = [
x for x in SG1.nodes() if G.degree(x) == 1 and x != endnodes[0]
][0]
DiTree2 = nx.traversal.bfs_tree(SG1, new_root)
SG2 = G.subgraph(nx.dag_longest_path(DiTree2, weight=weight))
return SG2, nx.dag_longest_path_length(DiTree2)
def path_entropy(graph, backward=False):
u"""Compute the average path entropy of a graph.
There is a more efficient algorithm defined in the paper. It is only
partially implemented so far. This is the naive aproach.
Corominas-Murtra, B., Goñi, J., Solé, R. V, & Rodríguez-Caso, C. (2013).
"On the origins of hierarchy in complex networks". PNAS, 110(33), 13316–21.
"""
gc = nx.condensation(graph)
L = nx.dag_longest_path_length(gc)
B = nx.adj_matrix(gc)
return _path_entropy(gc, B, L, backward=backward)
def get_depth(self):
"""Depth of the quantum circuit (longest path in the DAG)."""
# If there are no operations in the circuit, the depth is 0
if not self.operations:
self._depth = 0
# If there are operations but depth is uncomputed, compute the truncated graph
# with only the operations, and return the longest path + 1 (since the path is
# expressed in terms of edges, and we want it in terms of nodes).
if self._depth is None and self.operations:
if self._operation_graph is None:
self._operation_graph = self.graph.subgraph(self.operations)
self._depth = nx.dag_longest_path_length(self._operation_graph) + 1
return self._depth
def add_blocking_path(self, subg):
"""Adds a blocking path to a subgraph, modeling the longest
path not in the subgraph.
Parameters
----------
subg : networkx.DiGraph
Subgraph to which the blocking path is to be added.
Returns
-------
networkx.DiGraph
Subgraph with the added blocking path.
"""
cpd = nx.dag_longest_path_length(self.graph, weight="td")
blocked = subg.copy()
complement = self.graph.subgraph(
[u for u in self.graph if not u in subg])
external_cpd = nx.dag_longest_path_length(complement, weight="td")
dummy_cnt = 0
while blocked.has_node("dummy_%d" % dummy_cnt):
dummy_cnt += 1
u = "dummy_%d" % dummy_cnt
blocked.add_node(u, ta = 0, tr = cpd - external_cpd,\
coords = NodeCls(0, 0))
while blocked.has_node("dummy_%d" % dummy_cnt):
dummy_cnt += 1
v = "dummy_%d" % dummy_cnt
blocked.add_node(v, ta = external_cpd, tr = cpd,\
coords = NodeCls(0, 0))
blocked.add_edge(u, v, td=external_cpd)
return blocked
def parent_graph_statistic(self, G):
if len(G.edges()) == 0:
return
in_degree, out_degree = G.in_degree, G.out_degree
max_in_degree, max_out_degree = max(
in_degree, key=lambda x: x[1]), max(out_degree, key=lambda x: x[1])
print('max_in_degree: ', max_in_degree)
print('max_out_degree: ', max_out_degree)
n_nodes, n_edges = G.number_of_nodes(), G.number_of_edges()
print('number_of_nodes: ', n_nodes)
print('number_of_edges: ', n_edges)
print('avg_degree: ', 2 * n_edges / n_nodes)
print('dag_longest_path_length: ', nx.dag_longest_path_length(G))
cc_list = list(nx.weakly_connected_components(G))
self.connected_components_statistic(cc_list)
self.cc_list_source_statistic(cc_list)
def function(g):
if nx.dag_longest_path_length(g.network) > 2:
print("skip")
return 0
pheno = g.get_phenotype()
nodes = cart.get_nodes(int(math.sqrt(np.size(pheno))),
two_dimensional,
symmetric,
input_nodes=True)
output_nodes = cart.get_nodes(int(math.sqrt(np.size(pheno))),
two_dimensional,
symmetric,
input_nodes=False)
total_error = 0
#for i in range(256):
# set input values and activate network
result = np.zeros((int(math.sqrt(np.size(pheno))), 256))
input_vector = np.zeros((int(math.sqrt(np.size(pheno))), 256))
for j in range(len(nodes)):
input_vector[nodes[j]] += image_mat[j]
# depth is 4
for j in range(4):
result = np.matmul(np.transpose(pheno), input_vector + result)
result = activation(result)
output_vector = np.zeros((2, 256))
for j in range(len(output_nodes)):
output_vector[j, :] += result[output_nodes[j]]
output_vector = np.clip(output_vector, 0, 1)
# calculate the error for this sample
total_error = np.sum(np.abs(output_vector - label_mat))
return 1000.0 / (1.0 + total_error**2)
def depth(self, local: bool = True) -> int:
"""Return the circuit depth.
Args:
local: If True include local one-qubit gates in depth
calculation. Else return the multi-qubit gate depth.
"""
G = self.graph
if not local:
def remove_local(dagc: DAGCircuit) \
-> Generator[Operation, None, None]:
for elem in dagc:
if dagc.graph.degree[elem] > 2:
yield elem
G = DAGCircuit(remove_local(self)).graph
return nx.dag_longest_path_length(G) - 1
def _analyze_longest_chain(graph, components):
components_by_longest_path = [
(nx.dag_longest_path_length(component), component)
for component in components
]
components_by_longest_path.sort(key=lambda elm: elm[0],
reverse=True)
print("### Longest chain\n\nlength: %d" %
components_by_longest_path[0][0]
if len(components_by_longest_path) else 0,
end="\n\n",
flush=True)
for component in components_by_longest_path:
if component[0] < components_by_longest_path[0][0]:
break
root = self.get_digraph_root(component[1])
print("* %s (%s)" % (graph.nodes[root]['label'], root),
flush=True)
print("", flush=True)
def fill_parent_node(input_matrix, label_list, graph):
"""
If child node will be penalized, the parent node's will be penalized
"""
child_index = get_child_index_list(graph, label_list)
m = np.empty(input_matrix.shape, dtype=int)
for j in range(nx.dag_longest_path_length(graph)):
if j == 0:
matrix = input_matrix
else:
matrix = m
for i, c in enumerate(child_index):
if c == []:
v = matrix[:, i]
else:
v = np.where(np.any(matrix[:, c], axis=1)==1, 1, matrix[:,i])
m[:, i] = v
return m
def test_weighted(self):
edges = [(1, 2, -5), (2, 3, 1), (3, 4, 1), (4, 5, 0), (3, 5, 4),
(1, 6, 2)]
G = nx.DiGraph()
G.add_weighted_edges_from(edges)
assert_equal(nx.dag_longest_path_length(G), 5)
