def test_union_all_and_compose_all():
K3=nx.complete_graph(3)
P3=nx.path_graph(3)
G1=nx.DiGraph()
G1.add_edge('A','B')
G1.add_edge('A','C')
G1.add_edge('A','D')
G2=nx.DiGraph()
G2.add_edge('1','2')
G2.add_edge('1','3')
G2.add_edge('1','4')
G=nx.union_all([G1,G2])
H=nx.compose_all([G1,G2])
assert_edges_equal(G.edges(),H.edges())
assert_false(G.has_edge('A','1'))
assert_raises(nx.NetworkXError, nx.union, K3, P3)
H1=nx.union_all([H,G1],rename=('H','G1'))
assert_equal(sorted(H1.nodes()),
['G1A', 'G1B', 'G1C', 'G1D',
'H1', 'H2', 'H3', 'H4', 'HA', 'HB', 'HC', 'HD'])
H2=nx.union_all([H,G2],rename=("H",""))
assert_equal(sorted(H2.nodes()),
['1', '2', '3', '4',
'H1', 'H2', 'H3', 'H4', 'HA', 'HB', 'HC', 'HD'])
assert_false(H1.has_edge('NB','NA'))
G=nx.compose_all([G,G])
assert_edges_equal(G.edges(),H.edges())
G2=nx.union_all([G2,G2],rename=('','copy'))
assert_equal(sorted(G2.nodes()),
['1', '2', '3', '4', 'copy1', 'copy2', 'copy3', 'copy4'])
assert_equal(G2.neighbors('copy4'),[])
assert_equal(sorted(G2.neighbors('copy1')),['copy2', 'copy3', 'copy4'])
assert_equal(len(G),8)
assert_equal(nx.number_of_edges(G),6)
E=nx.disjoint_union_all([G,G])
assert_equal(len(E),16)
assert_equal(nx.number_of_edges(E),12)
E=nx.disjoint_union_all([G1,G2])
assert_equal(sorted(E.nodes()),[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
G1=nx.DiGraph()
G1.add_edge('A','B')
G2=nx.DiGraph()
G2.add_edge(1,2)
G3=nx.DiGraph()
G3.add_edge(11,22)
G4=nx.union_all([G1,G2,G3],rename=("G1","G2","G3"))
assert_equal(sorted(G4.nodes()),
['G1A', 'G1B', 'G21', 'G22',
'G311', 'G322'])
def compare_graphs(graph):
n = nx.number_of_nodes(graph)
m = nx.number_of_edges(graph)
k = np.mean(list(nx.degree(graph).values()))
erdos = nx.erdos_renyi_graph(n, p=m/float(n*(n-1)/2))
barabasi = nx.barabasi_albert_graph(n, m=int(k)-7)
small_world = nx.watts_strogatz_graph(n, int(k), p=0.04)
print(' ')
print('Compare the number of edges')
print(' ')
print('My network: ' + str(nx.number_of_edges(graph)))
print('Erdos: ' + str(nx.number_of_edges(erdos)))
print('Barabasi: ' + str(nx.number_of_edges(barabasi)))
print('SW: ' + str(nx.number_of_edges(small_world)))
print(' ')
print('Compare average clustering coefficients')
print(' ')
print('My network: ' + str(nx.average_clustering(graph)))
print('Erdos: ' + str(nx.average_clustering(erdos)))
print('Barabasi: ' + str(nx.average_clustering(barabasi)))
print('SW: ' + str(nx.average_clustering(small_world)))
print(' ')
print('Compare average path length')
print(' ')
print('My network: ' + str(nx.average_shortest_path_length(graph)))
print('Erdos: ' + str(nx.average_shortest_path_length(erdos)))
print('Barabasi: ' + str(nx.average_shortest_path_length(barabasi)))
print('SW: ' + str(nx.average_shortest_path_length(small_world)))
print(' ')
print('Compare graph diameter')
print(' ')
print('My network: ' + str(nx.diameter(graph)))
print('Erdos: ' + str(nx.diameter(erdos)))
print('Barabasi: ' + str(nx.diameter(barabasi)))
print('SW: ' + str(nx.diameter(small_world)))
def algorithm(w1,w2,w3,w4,G1,G2,G3,G4):
try:
cc=np.array([nx.average_clustering(G1,weight='weight'),nx.average_clustering(G2,weight='weight'),nx.average_clustering(G3,weight='weight'),nx.average_clustering(G4,weight='weight')])
spl=np.array([nx.average_shortest_path_length(G1,weight='weight'),nx.average_shortest_path_length(G2,weight='weight'),nx.average_shortest_path_length(G3,weight='weight'),nx.average_shortest_path_length(G4,weight='weight')])
nds=np.array([nx.number_of_nodes(G1),nx.number_of_nodes(G2),nx.number_of_nodes(G3),nx.number_of_nodes(G4)])
edgs= np.array([nx.number_of_edges(G1),nx.number_of_edges(G2),nx.number_of_edges(G3),nx.number_of_edges(G4)])
if valid(cc):
cc=stats.zscore(cc)
else:
cc=np.array([.1,.1,.1,.1])
cc= cc-min(cc)+.1
if valid(spl):
spl=stats.zscore(spl)
else:
spl=np.array([.1,.1,.1,.1])
spl= spl-min(spl)+.1
if valid(nds):
nds=stats.zscore(nds)
else:
nds=np.array([.1,.1,.1,.1])
nds = nds-min(nds)+.1
if valid(edgs):
edgs=stats.zscore(edgs)
else:
edgs=np.array([.1,.1,.1,.1])
edgs=edgs-min(edgs)+.1
r1=(w1*cc[0]+w2*spl[0]+w3*nds[0]+w4*edgs[0])*1000
r2=(w1*cc[1]+w2*spl[1]+w3*nds[1]+w4*edgs[1])*1000
r3=(w1*cc[2]+w2*spl[2]+w3*nds[2]+w4*edgs[2])*1000
r4=(w1*cc[3]+w2*spl[3]+w3*nds[3]+w4*edgs[3])*1000
d={'Player 1:': r1, 'Player 2:': r2,'Player 3:': r3, 'Player 4:': r4}
rank = sorted(d.items(), key=lambda x: x[1], reverse=True)
return ["USAU RANKINGS",str(rank[0][0])+ " " + str(int(rank[0][1])),str(rank[1][0])+" "+ str(int(rank[1][1])),str(rank[2][0])+" "+ str(int(rank[2][1])),str(rank[3][0])+" "+str(int(rank[3][1]))]
except:
return ["Unable to compute rankings! Need data","Player 1","Player 2","Player 3","Player 4"]
def reduceGraph(read_g, write_g, minEdgeWeight, minNodeDegree, Lp, Sp):
"""
Simplify the undirected graph and then update the 3 undirected weight properties.
:param read_g: is the graph pickle to read
:param write_g: is the updated graph pickle to write
:param minEdgeWeight: the original weight of each edge should be >= minEdgeWeight
:param minNodeDegree: the degree of each node should be >= minNodeDegree. the degree here is G.degree(node), NOT G.degree(node,weight='weight)
:return: None
"""
G=nx.read_gpickle(read_g)
print 'number of original nodes: ', nx.number_of_nodes(G)
print 'number of original edges: ', nx.number_of_edges(G)
for (u,v,w) in G.edges(data='weight'):
if w < minEdgeWeight:
G.remove_edge(u,v)
for n in G.nodes():
if G.degree(n)<minNodeDegree:
G.remove_node(n)
print 'number of new nodes: ', nx.number_of_nodes(G)
print 'number of new edges: ', nx.number_of_edges(G)
for (a, b, w) in G.edges_iter(data='weight'):
unweight_allocation(G, a, b, w,Lp,Sp)
print 'update weight ok'
nx.write_gpickle(G, write_g)
return
def run_main():
file = str(sys.argv[1])
f = open(file, 'r')
print "\nReading inputfile:", file, "..."
edgelist = []
for line in f.readlines():
edgelist.append((int(line.split()[0]), int(line.split()[1])))
Directed_G = nx.DiGraph(edgelist)
Undirected_G = Directed_G.to_undirected()
#plt.figure(figsize=(8,8))
#nx.draw(Directed_G,pos=nx.spring_layout(Directed_G))
#plt.draw()
#time.sleep(0.1)
# compute other things
print "Number of nodes involved in network:", nx.number_of_nodes(Undirected_G)
print "Number of edges:", nx.number_of_edges(Undirected_G)
print "Average degree:", nx.number_of_edges(Undirected_G) / float(nx.number_of_nodes(Undirected_G))
t0 = time.clock()
print "Average clustering coefficient:", compute_clustering_coefficient(Directed_G, Undirected_G)
print "Took:", time.clock() - t0, "seconds"
t1 = time.clock()
print "Average path length:", average_shortest_path(Directed_G, Undirected_G)
print "Took:", time.clock() - t1, "seconds"
print "Total time:", time.clock() - t0, "seconds"
report_final_stats()
counter += 1
second_counter += 1
def mcmc_subgraph_sample (master, eg): #import pdb; pdb.set_trace() new_graph = eg.copy() new_num_edges = curr_num_edges = num_eg_edges = nx.number_of_edges (eg) iterations = 2 * nx.number_of_nodes (eg) # play around w/ this number step_size = 1 # play around w/ this number sample_set = set(master.nodes_iter()) - set(eg.nodes_iter()) coeff = 1 for i in range(iterations): new_nodes = random.sample(sample_set, step_size) old_nodes = random.sample(new_graph.nodes(), step_size) new_graph = replace_in_context(new_nodes, old_nodes, new_graph, master) new_num_edges = nx.number_of_edges(new_graph) new_stat = abs(new_num_edges - num_eg_edges) old_stat = abs(curr_num_edges - num_eg_edges) rval = random.random() if (new_stat <= old_stat) or (rval < math.exp(coeff * (old_stat - new_stat))): # use new graph curr_num_edges = new_num_edges sample_set = (sample_set | set(new_nodes)) - set(old_nodes) else: # swap back old graph new_graph = replace_in_context(old_nodes, new_nodes, new_graph, master) if new_stat > num_eg_edges: coeff *= 1 return new_graph.nodes_iter()
def validate_constituency_parse(tokenization):
"""
Args:
tokenization (concrete.structure.ttypes.Tokenization)
Returns:
bool: True if tokenization's constituency parse is valid, False otherwise
"""
valid = True
if tokenization.parse:
total_constituents = len(tokenization.parse.constituentList)
logging.debug(ilm(6, "tokenization '%s' has %d constituents" % (tokenization.uuid, total_constituents)))
total_uuid_mismatches = 0
constituent_id_set = set()
constituent_parse_tree = nx.DiGraph()
for constituent in tokenization.parse.constituentList:
# Add nodes to parse tree
constituent_parse_tree.add_node(constituent.id)
if constituent.id not in constituent_id_set:
constituent_id_set.add(constituent.id)
else:
valid = False
logging.error(ilm(7, "constituent ID %d has already been used in this sentence's tokenization" % constituent.id))
# Per the Concrete 'structure.thrift' file, tokenSequence may not be defined:
# "Typically, this field will only be defined for leaf constituents (i.e., constituents with no children)."
if constituent.tokenSequence and constituent.tokenSequence.tokenizationId != tokenization.uuid:
total_uuid_mismatches += 1
if total_uuid_mismatches > 0:
valid = False
logging.error(ilm(6, "tokenization '%s' has UUID mismatch for %d/%d constituents" %
(tokenization.uuid, total_uuid_mismatches, total_constituents)))
# Add edges to constituent parse tree
for constituent in tokenization.parse.constituentList:
if constituent.childList:
for child_id in constituent.childList:
constituent_parse_tree.add_edge(constituent.id, child_id)
# Check if constituent parse "tree" is actually a tree
undirected_graph = constituent_parse_tree.to_undirected()
if not nx.is_connected(undirected_graph):
valid = False
logging.error(ilm(6, "The constituent parse \"tree\" is not a fully connected graph - the graph has %d components" %
len(nx.connected_components(undirected_graph))))
if nx.number_of_nodes(constituent_parse_tree) != nx.number_of_edges(constituent_parse_tree) + 1:
valid = False
logging.error(ilm(6, "The constituent parse \"tree\" is not a tree. |V| != |E|+1 (|V|=%d, |E|=%d)" %
(nx.number_of_nodes(constituent_parse_tree), nx.number_of_edges(constituent_parse_tree))))
return valid
def eval_proximity_vertices(network,graph_xml) :
'''returns the proximity of proportion of vertices between synthetic network(test) and real network (goal)'''
number_of_nodes_test = float(nx.number_of_nodes(network))
if network.isDirected() :
proportion_edges_test = nx.number_of_edges(network)/(number_of_nodes_test*(number_of_nodes_test-1))
else :
proportion_edges_test = 2.*nx.number_of_edges(network)/(number_of_nodes_test*(number_of_nodes_test-1))
proportion_edges_goal = eval(graph_xml.find('vertices').get('value'))
proximity = proximity_numbers(proportion_edges_goal,proportion_edges_test )
return proximity
def reformat2Igraph(self,graph): print nx.number_of_nodes(graph) print nx.number_of_edges(graph) G=Graph(0) for i in range(nx.number_of_nodes(graph)): G.add_vertices(1) for i in graph.edge: for j in graph.edge[i]: if i<=j: G.add_edges([(i,j)]) return G
def get_number_of_edges(filename):
import networkx as nx
threshold = 0
f = open(filename[:-4]+'_edges.dat','w')
for i in range(0,101):
threshold = float(i)/100
G = get_threshold_matrix(filename, threshold)
print 'number of edges:', nx.number_of_edges(G)
max_number_edges = nx.number_of_nodes(G) * (nx.number_of_nodes(G) - 1.) / 2
f.write("%f\t%d\t%f\n" % (threshold, nx.number_of_edges(G), nx.number_of_edges(G)/max_number_edges))
f.close()
def modularity(subgs, G):
Q = 0
total_edges = float(nx.number_of_edges(G))
for g in subgs:
nodes = g.node.keys()
degree_sum = sum(nx.degree(G, nodes).values())
edges_num = nx.number_of_edges(g)
Q += edges_num / total_edges - (degree_sum / (2 * total_edges))**2
return Q
def test_union_all_and_compose_all():
K3 = nx.complete_graph(3)
P3 = nx.path_graph(3)
G1 = nx.DiGraph()
G1.add_edge("A", "B")
G1.add_edge("A", "C")
G1.add_edge("A", "D")
G2 = nx.DiGraph()
G2.add_edge("1", "2")
G2.add_edge("1", "3")
G2.add_edge("1", "4")
G = nx.union_all([G1, G2])
H = nx.compose_all([G1, G2])
assert_edges_equal(G.edges(), H.edges())
assert_false(G.has_edge("A", "1"))
assert_raises(nx.NetworkXError, nx.union, K3, P3)
H1 = nx.union_all([H, G1], rename=("H", "G1"))
assert_equal(sorted(H1.nodes()), ["G1A", "G1B", "G1C", "G1D", "H1", "H2", "H3", "H4", "HA", "HB", "HC", "HD"])
H2 = nx.union_all([H, G2], rename=("H", ""))
assert_equal(sorted(H2.nodes()), ["1", "2", "3", "4", "H1", "H2", "H3", "H4", "HA", "HB", "HC", "HD"])
assert_false(H1.has_edge("NB", "NA"))
G = nx.compose_all([G, G])
assert_edges_equal(G.edges(), H.edges())
G2 = nx.union_all([G2, G2], rename=("", "copy"))
assert_equal(sorted(G2.nodes()), ["1", "2", "3", "4", "copy1", "copy2", "copy3", "copy4"])
assert_equal(G2.neighbors("copy4"), [])
assert_equal(sorted(G2.neighbors("copy1")), ["copy2", "copy3", "copy4"])
assert_equal(len(G), 8)
assert_equal(nx.number_of_edges(G), 6)
E = nx.disjoint_union_all([G, G])
assert_equal(len(E), 16)
assert_equal(nx.number_of_edges(E), 12)
E = nx.disjoint_union_all([G1, G2])
assert_equal(sorted(E.nodes()), [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
G1 = nx.DiGraph()
G1.add_edge("A", "B")
G2 = nx.DiGraph()
G2.add_edge(1, 2)
G3 = nx.DiGraph()
G3.add_edge(11, 22)
G4 = nx.union_all([G1, G2, G3], rename=("G1", "G2", "G3"))
assert_equal(sorted(G4.nodes()), ["G1A", "G1B", "G21", "G22", "G311", "G322"])
def test_equivalence_transform(self, ch2, ch3, methane):
ch2_atoms = list(ch2.particles())
methane_atoms = list(methane.particles())
equivalence_transform(ch2, ch2_atoms[0], methane_atoms[0], add_bond=False)
assert (ch2_atoms[0].pos == methane_atoms[0].pos).all()
equivalence_transform(ch2, ch2['up'], ch3['up'])
assert ch2.n_bonds == 2
assert nx.number_of_edges(ch2.root.bond_graph) == 3
assert nx.number_of_edges(ch3.root.bond_graph) == 4
ethyl = mb.Compound([ch2, ch3])
assert ethyl.n_bonds == 6
def main(DAG, cite, out):
DAG = create(cite, DAG)
print nx.number_of_edges(DAG)
# largest_component = component(DAG) #uses component function to select the largest subgraph in the data
# if not largest_component.is_directed():
# out.write('\n' + 'yup not directed')
# out.write('\n' + 'There are %d nodes in the largest component' %nx.number_of_nodes(largest_component))
# largest_component_DAG = redirect(DAG,largest_component)
# if not largest_component_DAG.is_directed():
# out.write('\n' + 'Not directed')
# else:
# out.write('\n' + 'Directed!')
# out.write('\n' + 'There are now %d nodes in the largest component' %nx.number_of_nodes(largest_component_DAG))
#check if it's connected etc!
# out.write(str(DAG.number_of_edges()))
# if not nx.is_connected(largest_component_DAG.to_undirected()):
# out.write('\n'+'The network is disconnected')
# out.write('\n' + "There are %d connected components" %nx.number_connected_components(largest_component_DAG.to_undirected()))
#out.write(str(nx.average_shortest_path_length(largest_component_DAG)))
print age('0001001', '9401139')
print age('0103030', '0204161')
print simple_age('33', '100')
print simple_age('45', '2')
paths = find_all_paths(DAG,'8', '0')
# print paths
empty = []
listofpaths = make_list_of_paths(paths, empty)
pathset = []
for path in listofpaths:
if path not in pathset:
pathset.append(path)
for path in pathset:
out.write('\n' + str(path))
out.write('\n' + 'The longest path is ' + str(max(pathset, key=len)))
# setofpaths = set(listofpaths)
#Uses method 2 of assigning a number to each node reflecting the path length between that node and the youngest node
print 'Testing using numbering started'
paths3 = distance_to_all_nodes(box, extremal_points[0] , n) #creates list containing lists of lists of lists...containing a list of the nodes in path
empty3 = [] #creates the list which will contain all of the paths
listofpaths3 = make_list_of_paths(paths3, empty3) #looks through 'paths' to extract proper paths from the various levels of sublists
pathset3 = [] #creates the list which will contain all unique paths
for path in listofpaths3:
if path not in pathset3:
pathset3.append(path) #only adds unique paths to pathset
out.write('\n' + 'Path testing using number...%d unique paths found' %(len(pathset3)))
for path in pathset3:
out.write('\n' + str(path)) #prints all the unique paths
# longestpath3 = max(pathset3, key=len) #identifies the longest path in the set of paths
# out.write('\n' + 'The longest path from numbering is %s which is %d nodes long' %(str(longestpath3), len(longestpath3)))
print 'Testing using numbering completed'
def compareNumberOfEdges(masterGraph,wordGraph,worksheet,row):
numberOfEdgesMasterGraph = nx.number_of_edges(masterGraph)
numberOfEdgesWordGraph = nx.number_of_edges(wordGraph)
# worksheet.write(row,1,numberOfEdgesMasterGraph)
# worksheet.write(row,2,numberOfEdgesWordGraph)
result = False
if(numberOfEdgesMasterGraph >= numberOfEdgesWordGraph):
result = True
# worksheet.write(row,3,result)
if result == True:
return 1
else:
return -1
def generate_smtcode_old(self): #convert_mpnf
st = time.time()
self.mdg = get_weighted_graph(self.graph, self.pair_mp_prop, self.opts)
self.info.extend([('g_nodes', nx.number_of_nodes(self.graph)),
('g_edges', nx.number_of_edges(self.graph)),
('mdg_nodes', nx.number_of_nodes(self.mdg)),
('mdg_edges', nx.number_of_edges(self.mdg))])
sccs = self._gen_sccs(self.mdg)
self._gen_smt_from_graph(sccs)
en = time.time()
self.time.append(('total gen_smt: graph->mdg->mdg(scc)', en - st))
def split_edges(G):
Gsmaller = nx.DiGraph()
Glarger = nx.DiGraph()
for node in G.nodes():
Gsmaller.add_node(node)
Glarger.add_node(node)
for (u,v) in G.edges():
if G.node[u]['index'] < G.node[v]['index']:
Gsmaller.add_edge(u,v)
elif G.node[u]['index'] > G.node[v]['index']:
Glarger.add_edge(u,v)
if nx.number_of_edges(Gsmaller) > nx.number_of_edges(Glarger):
return topological_sort(Gsmaller)
else:
return topological_sort(Glarger)
def get_SMTCode(mdg, mp_prop, opts):
# input mdg
# output SMTCode list, result per
results = {'SCCs':[], 'AccSCCs':[]}
if opts.tgba:
all_acceptlist = mdg.graph['acccond']
SCCs = nx.strongly_connected_component_subgraphs(mdg)
for scc in SCCs:
results['SCCs'].append({'edges':nx.number_of_edges(scc), 'nodes':nx.number_of_nodes(scc)})
if scc.edges() == []:
pass
else:
# nx.draw_circular(scc)
accept = 0
if opts.tgba:
a = reduce(lambda x, y : x | y , [set(edge[2]['acc']) for edge in scc.edges(data=True)])
print a
acceptlist = list(a)
print acceptlist
"""for edge in scc.edges(data=True):
for acc in edge[2]['acc']:
if not acc in acceptlist:
acceptlist.append(acc)
if opts.debug:
print acceptlist
"""
if all_acceptlist.sort() == acceptlist.sort():
if opts.pdebug:
print acceptlist,' ==? ',all_acceptlist
print ' TGBA-Accept'
accept = 1
else:
for node in scc.nodes():
if 'accept' in node:
accept = 1
break
if accept == 1:
if opts.debug:
print '\t found BA/TGBA-Accept SCC'
code_time = runsmt.gen_smtcodelist_time(scc, mp_prop, opts)
results['AccSCCs'].append({'SMTCode':code_time['code'],
'edges':nx.number_of_edges(scc), 'nodes':nx.number_of_nodes(scc),
'gen_time':code_time['time'], 'sat_time':0})
else:
if opts.pdebug:
print ' non accept SCC'
return results
def get_single_network_measures(G, thr):
f = open(out_prfx + 'single_network_measures.dat', 'a')
N = nx.number_of_nodes(G)
L = nx.number_of_edges(G)
D = nx.density(G)
cc = nx.average_clustering(G)
compon = nx.number_connected_components(G)
Con_sub = nx.connected_component_subgraphs(G)
values = []
values_2 =[]
for node in G:
values.append(G.degree(node))
ave_deg = float(sum(values)) / float(N)
f.write("%f\t%d\t%f\t%f\t%f\t%f\t" % (thr, L, D, cc, ave_deg, compon))
#1. threshold, 2. edges, 3. density 4.clustering coefficient
#5. average degree, 6. number of connected components
for i in range(len(Con_sub)):
if nx.number_of_nodes(Con_sub[i])>1:
values_2.append(nx.average_shortest_path_length(Con_sub[i]))
if len(values_2)==0:
f.write("0.\n")
else:
f.write("%f\n" % (sum(values_2)/len(values_2)))
#7. shortest pathway
f.close()
def Attributes_of_Graph(G):
print "*Statistic attributes of graphs:"
print "N", nx.number_of_nodes(G)
print "M", nx.number_of_edges(G)
print "C", nx.average_clustering(G)
#print "<d>", nx.average_shortest_path_length(G)
print "r", nx.degree_assortativity_coefficient(G)
degree_list = list(G.degree_iter())
max_degree = 0
min_degree = 0
avg_degree_1 = 0.0
avg_degree_2 = 0.0
for node in degree_list:
avg_degree_1 = avg_degree_1 + node[1]
avg_degree_2 = avg_degree_2 + node[1]*node[1]
if node[1] > max_degree:
max_degree = node[1]
if node[1] < min_degree:
min_degree = node[1]
#end for
avg_degree = avg_degree_1/len(degree_list)
avg_degree_square = (avg_degree_2/len(degree_list)) / (avg_degree*avg_degree)
print "<k>", avg_degree
print "k_max", max_degree
print "H", avg_degree_square
print "DH", float(max_degree-min_degree)/G.number_of_nodes()
def save_graph(self, graphname, fmt='edgelist'):
"""
Saves the graph to disk
**Positional Arguments:**
graphname:
- Filename for the graph
**Optional Arguments:**
fmt:
- Output graph format
"""
self.g.graph['ecount'] = nx.number_of_edges(self.g)
g = nx.convert_node_labels_to_integers(self.g, first_label=1)
if fmt == 'edgelist':
nx.write_weighted_edgelist(g, graphname, encoding='utf-8')
elif fmt == 'gpickle':
nx.write_gpickle(g, graphname)
elif fmt == 'graphml':
nx.write_graphml(g, graphname)
else:
raise ValueError('edgelist, gpickle, and graphml currently supported')
pass
def load_graph(gid, with_followers = False):
users = db.graph_users.find({ 'gid': str(gid) }, { 'id': 1, '_id': 0 })
nodes = set()
graph = nx.Graph()
for u in users:
nodes.update([u['id']])
print 'Nodes to load:', len(nodes)
for uid in nodes:
graph.add_node(int(uid))
friends = db.user_friends.find_one({ '_id': uid })
if friends is None:
friends = { 'friends': [] }
for f in friends['friends']:
if f in nodes:
graph.add_edge(int(uid), int(f))
if with_followers:
followers = db.followers.find_one({ '_id': uid })
if followers is None:
followers = { 'followers': [] }
for f in followers['followers']:
if f in nodes:
graph.add_edge(int(uid), int(f))
print 'Graph loaded'
print 'Nodes:', nx.number_of_nodes(graph)
print 'Edges:', nx.number_of_edges(graph)
return graph
def get_characteristics(G, filename):
import networkx as nx
print 'calculating characteristics'
n_nodes = nx.number_of_nodes(G)
n_edges = nx.number_of_edges(G)
n_components = nx.number_connected_components(G)
print 'number of nodes:', n_nodes
print 'number of edges:', n_edges
print 'number of components:', n_components
print 'degree histogram'
check_sum = 0.
degree_hist = {}
for node in G:
if G.degree(node) not in degree_hist:
degree_hist[G.degree(node)] = 1
else:
degree_hist[G.degree(node)] += 1
keys = degree_hist.keys()
keys.sort()
for item in keys:
print item, degree_hist[item]
check_sum += float(degree_hist[item])/float(n_nodes)
print "check sum: %f" % check_sum
#print 'clustering coefficient'
print 'clustering coefficient of full network', nx.average_clustering(G)
return 0
def topology(data, ell):
"""
Computation of topological characteristics.
Parameters
------------
data : array of pathes to the graphs
ell : list of length scales
"""
for i in data:
G = nx.read_gpickle(i)
B = nx.number_of_edges(G)
V = nx.number_of_nodes(G)
Euler = V - B
C = (B-V)/float(V)
eu.append(Euler)
c_t.append(C)
vert.append(V)
bran.append(B)
plt.plot(ell, c_t, '.', label='v23')
#
#np.save('/backup/yuliya/v23/graphs_largedom/Euler.npy', eu)
#np.save('/backup/yuliya/v23/graphs_largedom/C_t.npy', c_t)
#np.save('/backup/yuliya/v23/graphs_largedom/V.npy', vert)
#np.save('/backup/yuliya/v23/graphs_largedom/B.npy', bran)
#np.save('/backup/yuliya/vsi01/graphs_largdom/time.npv23/graphs_largedom/y', t)
plt.yscale('log')
def _build_subgraph(self):
if self.rebuildgraph:
self._build_graph()
self.log.info("Building domain transition subgraph.")
self.log.debug("Excluding {0}".format(self.exclude))
self.log.debug("Reverse {0}".format(self.reverse))
# reverse graph for reverse DTA
if self.reverse:
self.subG = self.G.reverse(copy=True)
else:
self.subG = self.G.copy()
if self.exclude:
# delete excluded domains from subgraph
self.subG.remove_nodes_from(self.exclude)
# delete excluded entrypoints from subgraph
self.__remove_excluded_entrypoints()
self.rebuildsubgraph = False
self.log.info("Completed building domain transition subgraph.")
self.log.debug("Subgraph stats: nodes: {0}, edges: {1}.".format(
nx.number_of_nodes(self.subG),
nx.number_of_edges(self.subG)))
def get_characteristics(G, thr, input_name):
N = nx.number_of_nodes(G) #total number of nodes : N
L = nx.number_of_edges(G) #total number of links : L
Compon = nx.number_connected_components(G) #number of connected components
cc = nx.average_clustering(G) # clustering coefficient : cc
D = nx.density(G) # network density: Kappa
check_sum = 0.
degree_hist = {}
values = []
for node in G:
if G.degree(node) not in degree_hist:
degree_hist[G.degree(node)] = 1
else:
degree_hist[G.degree(node)] += 1
values.append(G.degree(node))
ave_degree = float(sum(values)/float(N)) # average degree: <Kappa>
keys = degree_hist.keys()
keys.sort()
for item in keys :
check_sum += float(degree_hist[item])/float(N)
print 'Test matrix: ', input_name
print 'Threshold: ', thr
print 'Number of nodes: ', N
print 'Number of links: ', L
print 'Number of connected components: ', Compon
print 'Clustering coefficient of full network: ', cc
print 'Check degree distribution sum: ', check_sum
print 'Network density: ', D
print 'Average network degree: ', ave_degree
return 0
def _build_subgraph(self):
if self.rebuildgraph:
self._build_graph()
self.log.info("Building information flow subgraph...")
self.log.debug("Excluding {0!r}".format(self.exclude))
self.log.debug("Min weight {0}".format(self.min_weight))
# delete excluded types from subgraph
nodes = [n for n in self.G.nodes() if n not in self.exclude]
self.subG = self.G.subgraph(nodes).copy()
# delete edges below minimum weight.
# no need if weight is 1, since that
# does not exclude any edges.
if self.min_weight > 1:
delete_list = []
for s, t in self.subG.edges():
edge = Edge(self.subG, s, t)
if edge.weight < self.min_weight:
delete_list.append(edge)
self.subG.remove_edges_from(delete_list)
self.rebuildsubgraph = False
self.log.info("Completed building information flow subgraph.")
self.log.debug("Subgraph stats: nodes: {0}, edges: {1}.".format(
nx.number_of_nodes(self.subG),
nx.number_of_edges(self.subG)))
def _build_graph(self):
self.G.clear()
self.G.name = "Information flow graph for {0}.".format(self.policy)
self.perm_map.map_policy(self.policy)
self.log.info("Building information flow graph from {0}...".format(self.policy))
for rule in self.policy.terules():
if rule.ruletype != TERuletype.allow:
continue
(rweight, wweight) = self.perm_map.rule_weight(rule)
for s, t in itertools.product(rule.source.expand(), rule.target.expand()):
# only add flows if they actually flow
# in or out of the source type type
if s != t:
if wweight:
edge = Edge(self.G, s, t, create=True)
edge.rules.append(rule)
edge.weight = wweight
if rweight:
edge = Edge(self.G, t, s, create=True)
edge.rules.append(rule)
edge.weight = rweight
self.rebuildgraph = False
self.rebuildsubgraph = True
self.log.info("Completed building information flow graph.")
self.log.debug("Graph stats: nodes: {0}, edges: {1}.".format(
nx.number_of_nodes(self.G),
nx.number_of_edges(self.G)))
def calculate(g, voltage):
edges_num = nx.number_of_edges(g)
# sort nodes in edges
edges = [edge if edge[0] < edge[1] else (edge[1], edge[0])
for edge in nx.edges(g)]
a = np.zeros((edges_num, edges_num))
b = np.zeros((edges_num, 1))
i = 0
# first law
for node in [node for node in nx.nodes(g) if node != 0]:
for neighbor in nx.all_neighbors(g, node):
edge = tuple(sorted((node, neighbor)))
a[i][edges.index(edge)] = 1 if neighbor < node else -1
i += 1
# second law
cycles = nx.cycle_basis(g, 0)
for cycle in cycles:
for j in range(0, len(cycle)):
node = cycle[j]
next_node = cycle[(j + 1) % len(cycle)]
edge = tuple(sorted((node, next_node)))
resistance = g[node][next_node]['weight']
a[i][edges.index(edge)] = resistance if node < next_node else -resistance
if 0 in cycle:
b[i] = voltage
i += 1
# solve
x = np.linalg.solve(a, b)
for (x1, x2), res in zip(edges, x):
g[x1][x2]['current'] = res[0]
def modularity(graph, membership):
try:
noOfEdges = nx.number_of_edges(graph)
types = max(membership) + 1
print types, len(membership)
a = {}
e = {}
for i in range(types):
a[i] = 0
e[i] = 0
for edge in graph.edges():
fromNode = int(edge[0])
toNode = int(edge[1])
c1 = membership[fromNode]
c2 = membership[toNode]
if c1 == c2:
e[c1] += 2
# print "c1= ", c1, "c2=", c2
a[c1] += 1
a[c2] += 1
modularity = 0.0
if noOfEdges > 0:
for i in range(types):
tmp = a[i] / 2 / noOfEdges
modularity += e[i] / 2 / noOfEdges
modularity -= tmp * tmp
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print (exc_type, fname, exc_tb.tb_lineno)
raise e
return modularity
def random_reference(G, niter=1, connectivity=True, seed=None):
"""Compute a random graph by swapping edges of a given graph.
Parameters
----------
G : graph
An undirected graph with 4 or more nodes.
niter : integer (optional, default=1)
An edge is rewired approximately `niter` times.
connectivity : boolean (optional, default=True)
When True, ensure connectivity for the randomized graph.
seed : integer, random_state, or None (default)
Indicator of random number generation state.
See :ref:`Randomness<randomness>`.
Returns
-------
G : graph
The randomized graph.
Notes
-----
The implementation is adapted from the algorithm by Maslov and Sneppen
(2002) [1]_.
References
----------
.. [1] Maslov, Sergei, and Kim Sneppen.
"Specificity and stability in topology of protein networks."
Science 296.5569 (2002): 910-913.
"""
if G.is_directed():
msg = "random_reference() not defined for directed graphs."
raise nx.NetworkXError(msg)
if len(G) < 4:
raise nx.NetworkXError("Graph has less than four nodes.")
from networkx.utils import cumulative_distribution, discrete_sequence
local_conn = nx.connectivity.local_edge_connectivity
G = G.copy()
keys, degrees = zip(*G.degree()) # keys, degree
cdf = cumulative_distribution(degrees) # cdf of degree
nnodes = len(G)
nedges = nx.number_of_edges(G)
niter = niter * nedges
ntries = int(nnodes * nedges / (nnodes * (nnodes - 1) / 2))
swapcount = 0
for i in range(niter):
n = 0
while n < ntries:
# pick two random edges without creating edge list
# choose source node indices from discrete distribution
(ai, ci) = discrete_sequence(2, cdistribution=cdf, seed=seed)
if ai == ci:
continue # same source, skip
a = keys[ai] # convert index to label
c = keys[ci]
# choose target uniformly from neighbors
b = seed.choice(list(G.neighbors(a)))
d = seed.choice(list(G.neighbors(c)))
bi = keys.index(b)
di = keys.index(d)
if b in [a, c, d] or d in [a, b, c]:
continue # all vertices should be different
# don't create parallel edges
if (d not in G[a]) and (b not in G[c]):
G.add_edge(a, d)
G.add_edge(c, b)
G.remove_edge(a, b)
G.remove_edge(c, d)
# Check if the graph is still connected
if connectivity and local_conn(G, a, b) == 0:
# Not connected, revert the swap
G.remove_edge(a, d)
G.remove_edge(c, b)
G.add_edge(a, b)
G.add_edge(c, d)
else:
swapcount += 1
break
n += 1
return G
def correction(self, graph, err):
"""
Given a syndrome graph with negative edge weights, finds the
maximum-weight perfect matching and produces a
sparse_pauli.Pauli
"""
if self.useBlossom:
#----------- c processing
# print('C Processing')
# print( 'graph nodes: {0}'.format( graph.nodes() ) )
# print( 'graph edges: {0}'.format( graph.edges() ) )
node_num = nx.number_of_nodes(graph)
edge_num = nx.number_of_edges(graph)
# print( 'no of nodes : {0}, no of edges : {1}'.format(node_num,edge_num) )
edges = self.ffi.new('Edge[%d]' % (edge_num))
cmatching = self.ffi.new('int[%d]' % (2 * node_num))
node2id = {val: index for index, val in enumerate(graph.nodes())}
id2node = {v: k for k, v in node2id.items()}
# print(node2id)
e = 0
for u, v in graph.edges():
uid = int(node2id[u])
vid = int(node2id[v])
wt = -int(graph[u][v]['weight']) # weights from NetworkX
# print('weight of edge[{0}][{1}] = {2}'.format( uid, vid, wt) )
edges[e].uid = uid
edges[e].vid = vid
edges[e].weight = wt
e += 1
# print('printing edges before calling blossom')
# for e in range(edge_num):
# print(edges[e].uid, edges[e].vid, edges[e].weight)
retVal = self.blossom.Init()
retVal = self.blossom.Process(node_num, edge_num, edges)
# retVal = self.blossom.PrintMatching()
nMatching = self.blossom.GetMatching(cmatching)
retVal = self.blossom.Clean()
pairs = []
# print('recieved C matching :')
for i in range(0, nMatching, 2):
u, v = id2node[cmatching[i]], id2node[cmatching[i + 1]]
pairs.append((u, v))
# print( '{0}, {1} '.format(u,v) )
#----------- end of c processing
else:
# Tom MWPM
"""
bulk_vs = sorted(list([_ for _ in graph.nodes() if type(_) is int]))
bdy_vs = sorted(list([_ for _ in graph.nodes() if type(_) is tuple]))
if bulk_vs == []:
return sp.I
sz = len(bulk_vs) + 1
weight_mat = np.zeros((sz, sz), dtype=np.int_)
for r, c in it.product(range(1, sz), repeat=2):
if r != c:
u, v = bulk_vs[r - 1], bulk_vs[c - 1]
weight_mat[r, c] = -graph[u][v]['weight']
for dx in range(1, sz):
u = bulk_vs[dx - 1]
v = (u, 'b')
weight_mat[0, dx] = -graph[u][v]['weight']
weight_mat[dx, 0] = weight_mat[0, dx]
# eliminate mixed sign
min_wt = np.amin(weight_mat) - 1
if min_wt != -1:
for r, c in it.product(range(1, sz), repeat=2):
if weight_mat[r, c] != 0:
weight_mat[r, c] -= min_wt
# weight_mat = weight_mat.clip(0, np.inf)
try:
match_lst = bw.insert_wm(weight_mat)
except:
with open('error_wts.pkl', 'w') as phil:
pkl.dump(weight_mat, phil)
raise ValueError("Tom's Blossom has gone wrong: "
"weight_mat saved to error_wts.pkl.")
redundant_pairs = [(n_lst[j], n_lst[k-1])
for j, k in enumerate(match_lst[1:])]
"""
# """ NX MWPM
matching = nx.max_weight_matching(graph, maxcardinality=True)
redundant_pairs = matching.items()
# """
# get rid of non-digraph duplicates
pairs = []
for tpl in redundant_pairs:
if tuple(reversed(tpl)) not in pairs:
pairs.append(tpl)
# print(tpl)
x = self.layout.map.inv
pauli_lst = []
for u, v in pairs:
if isinstance(u, int) & isinstance(v, int):
pauli_lst.append(self.path_pauli(x[u], x[v], err))
elif isinstance(u, int) ^ isinstance(v, int):
bdy_pt = graph[u][v]['close_pt']
vert = u if isinstance(u, int) else v
pauli_lst.append(self.path_pauli(bdy_pt, x[vert], err))
else:
pass #both boundary points, no correction
return product(pauli_lst)
import community
from community import community_louvain
myNetXGraph = nx.karate_club_graph()
# Prints summary information about the graph
print(nx.info(myNetXGraph))
# Print the degree of each node
print("Node Degree")
for v in myNetXGraph:
print('%s %s' % (v, myNetXGraph.degree(v)))
# Computer and print other stats
nbr_nodes = nx.number_of_nodes(myNetXGraph)
nbr_edges = nx.number_of_edges(myNetXGraph)
nbr_components = nx.number_connected_components(myNetXGraph)
print("Number of nodes:", nbr_nodes)
print("Number of edges:", nbr_edges)
print("Number of connected components:", nbr_components)
print("Density:", nbr_edges / (nbr_nodes * (nbr_nodes - 1) / 2))
# Draw the network using the default settings
nx.draw(myNetXGraph)
plt.clf()
# Draw, but change the color to to blue
nx.draw(myNetXGraph, node_color="blue")
plt.clf()
def nedges(self):
return nx.number_of_edges(self.net)
def get_min_fill_factor(Gn):
return np.amin([nx.number_of_edges(G) / (nx.number_of_nodes(G)
* nx.number_of_nodes(G)) for G in Gn])
def get_all_edge_num(Gn):
return [nx.number_of_edges(G) for G in Gn]
from networkx.algorithms import community
# read edge list
g = nx.read_edgelist("C:/Users/aayesha/Desktop/DiscreteProject/OUTFILE.txt")
ug = nx.to_undirected(g)
# print basic info (is the graph ok?)
print(nx.info(ug))
# basic analysis
# number of nodes
print("number of nodes:", nx.number_of_nodes(ug))
#number of edges
print("number of edges:", nx.number_of_edges(ug))
#average clustering
print(nx.average_clustering(ug))
## diameter
#print("Diameter:",nx.diameter(ug))
# this diameter shows ...
# average degree
sum = 0
for n in ug.nodes():
sum = sum + ug.degree(n)
print("Average degree:", sum / ug.number_of_nodes())
options = {
def run(args):
# Check arguments.
assert len(args.num_sampled_vertices_network)==len(args.index_vertex_files)==len(args.edge_list_files)
assert len(args.num_sampled_vertices_weights)==len(args.vertex_weight_files)
assert args.num_vertices>0
assert args.min_num_edges>0
assert args.min_num_edges<=args.num_vertices*(args.num_vertices-1)/2
# Create random network.
n = args.num_vertices
for i in range(1, n):
G = nx.barabasi_albert_graph(n, i, seed=args.seed)
if nx.number_of_edges(G)>args.min_num_edges:
break
# Use letters instead of integers for the vertex labels.
vertices = letter_range(n)
edges = [(vertices[i], vertices[j]) for i, j in G.edges()]
G = nx.Graph()
G.add_nodes_from(vertices)
G.add_edges_from(edges)
# Implant cliques.
random.seed(args.seed)
implanted_vertices = set()
nonimplanted_vertices = set(vertices)
for implant_size in args.implant_sizes:
implant = set(random.sample(sorted(nonimplanted_vertices), implant_size))
implanted_vertices = set.union(implanted_vertices, implant)
nonimplanted_vertices = set.difference(nonimplanted_vertices, implant)
for u, v in combinations(implant, 2):
G.add_edge(u, v)
implanted_vertices = sorted(implanted_vertices)
nonimplanted_vertices = sorted(nonimplanted_vertices)
# Create random weights.
np.random.seed(args.seed)
weights = np.random.exponential(scale=1.0, size=n)
# Assign high weights to implanted vertices and low weights to other vertices.
random.seed(args.seed)
sorted_weights = np.sort(weights)[::-1]
random.shuffle(implanted_vertices)
random.shuffle(nonimplanted_vertices)
sorted_vertices = implanted_vertices + nonimplanted_vertices
vertex_to_weight = dict((v, w) for v, w in zip(sorted_vertices, sorted_weights))
# Sample the random network.
G_samples = []
for num_sampled_vertices in args.num_sampled_vertices_network:
random.seed(args.seed)
sampled_vertices = random.sample(vertices, num_sampled_vertices)
G_sample = G.subgraph(sampled_vertices)
G_samples.append(G_sample)
# Sample the random weights.
vertex_to_weight_samples = []
for num_sampled_vertices in args.num_sampled_vertices_weights:
random.seed(args.seed)
sampled_vertices = random.sample(vertices, num_sampled_vertices)
vertex_to_weight_sample = dict((v, vertex_to_weight[v]) for v in sampled_vertices)
vertex_to_weight_samples.append(vertex_to_weight_sample)
# Output sampled random networks.
for G_sample, index_vertex_file, edge_list_file in zip(G_samples, args.index_vertex_files, args.edge_list_files):
np.random.seed(args.seed)
sampled_vertices = np.random.permutation(G_sample.nodes())
vertex_to_index = dict((v, i+1) for i, v in enumerate(sampled_vertices))
edge_list = [[vertex_to_index[u], vertex_to_index[v]] for u, v in G_sample.edges() if u!=v]
with open(index_vertex_file, 'w') as f:
index_vertex_string = '\n'.join('\t'.join(map(str, (i, v))) for v, i in vertex_to_index.items())
f.write(index_vertex_string)
with open(edge_list_file, 'w') as f:
edge_list_string = '\n'.join('\t'.join(map(str, edge)) for edge in edge_list)
f.write(edge_list_string)
# Output sample random weights.
for vertex_to_weight_sample, vertex_weight_file in zip(vertex_to_weight_samples, args.vertex_weight_files):
with open(vertex_weight_file, 'w') as f:
vertex_weight_string = '\n'.join('\t'.join(map(str, (v, w))) for v, w in vertex_to_weight_sample.items())
f.write(vertex_weight_string)
def main(argv):
input_file = None
output_file = None
k = None
noise = None
try:
opts, args = getopt.getopt(argv, "i:o:k:n:")
except getopt.GetoptError:
sys.exit(
"test.py -i <inputfile> -o <outputfile> -k <k-anonymity level> -n <noise>"
)
for opt, arg in opts:
if opt == '-i':
input_file = arg
elif opt == '-o':
output_file = arg
elif opt == '-k':
k = int(arg)
elif opt == '-n':
noise = int(arg)
error = False
if input_file is None:
print("Please specify an input file")
error = True
if output_file is None:
print("Please specify an output file")
error = True
if error:
sys.exit(
"Syntax: test.py -i <inputfile> -o <outputfile> -k <k-anonymity level> -n <noise>"
)
if k is None:
k = 2
print("Using default k = 2")
if noise is None:
noise = 1
print("Using default n = 1")
if not path.exists(input_file):
sys.exit("Cannot find the input file")
log = open(output_file + '.log', 'w')
sys.stdout = log
G = nx.read_edgelist(input_file, nodetype=int)
start = time.time()
Ga = kd.graph_anonymiser(G, k=k, noise=noise, with_deletions=True)
print("Total execution time =", time.time() - start)
H = nx.intersection(G, Ga)
num_edges_in_G = len(set(G.edges()))
num_edges_in_both = len(set(H.edges()))
print("Edges overlap = " + str(100 * num_edges_in_both / num_edges_in_G) +
"%")
print("Num edges original graph = " + str(nx.number_of_edges(G)))
print("Num edges anonymised graph = " + str(nx.number_of_edges(Ga)))
nx.write_edgelist(Ga, output_file, data=False)
test_pairs.append((line_list[1], line_list[2]))
time1 = timeit.default_timer()
print('Time for reading file: ', time1 - time0)
'''Create a digraph for the task'''
DG = nx.DiGraph()
DG.add_edges_from(pairs)
'''Create a undirected graph for computing AA, JC and RA'''
UDG = nx.Graph()
UDG.add_edges_from(pairs)
time2 = timeit.default_timer()
print('Time for creating graphs: ', time2 - time1)
print("Num. nodes: ", nx.number_of_nodes(DG))
print("Num. edges: ", nx.number_of_edges(DG))
'''Get nodes edges, and non-edges'''
nodes = nx.nodes(DG)
edges = nx.edges(DG)
non_edges = nx.non_edges(DG)
'''Compute HAA, HJC and HRA'''
HAA = []
HJC = []
HRA = []
SD = []
for e in test_pairs:
if not DG.has_node(e[0]):
DG.add_node(e[0])
UDG.add_node(e[0])
if not DG.has_node(e[1]):
DG.add_node(e[1])
def main():
parser = argparse.ArgumentParser(
prog="build-red-blue-graph",
description="construct red-blu graph from WIF.",
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('-w',
'--wif',
help="Input WIF file.",
required=True,
dest='wif_file')
parser.add_argument('-o',
'--out',
help="Output WIF merged file.",
required=True,
dest='out_file')
parser.add_argument('-g',
'--graph',
help="Output graph CCS file.",
required=False,
dest='graph_file')
parser.add_argument(
'-t',
'--thr',
required=False,
dest='thr',
type=int,
default=1000000,
help=
"Threshold of the ratio between the probabilities that the two reads come from the same side or from different sides."
)
parser.add_argument('-e',
'--error_rate',
required=False,
dest='err_rate',
type=float,
default=0.15,
help="Probability that any nucleotide is wrong.")
parser.add_argument(
'-m',
'--max_error_rate',
required=False,
dest='max_err_rate',
type=float,
default=0.25,
help=
"If an edge has too many errors, we discard it, since it is not reliable."
)
parser.add_argument(
'-n',
'--neg_thr',
required=False,
dest='neg_thr',
type=int,
default=1000,
help=
"Threshold_neg is a more conservative threshold for the evidence that two reads should not be clustered together."
)
parser.add_argument('-v',
'--verbose',
help='increase output verbosity',
action='count',
default=0)
args = parser.parse_args()
if args.verbose == 0:
log_level = logging.INFO
elif args.verbose == 1:
log_level = logging.DEBUG
else:
log_level = logging.DEBUG
logging.basicConfig(level=log_level,
format='%(levelname)-8s [%(asctime)s] %(message)s',
datefmt="%y%m%d %H%M%S")
logging.info("Program started.")
gblue = nx.Graph()
gred = nx.Graph()
gnotblue = nx.Graph()
gnotred = nx.Graph()
# Probability that any nucleotide is wrong
error_rate = args.err_rate
logging.info("Error Rate: %s", error_rate)
# If an edge has too many errors, we discard it, since it is not reliable
max_error_rate = args.max_err_rate
logging.info("Max Error Rate: %s", max_error_rate)
# Threshold of the ratio between the probabilities that the two reads come from
# the same side or from different sides
thr = args.thr
logging.info("Positive Threshold: %s", thr)
# Threshold_neg is a more conservative threshold for the evidence
# that two reads should not be clustered together.
thr_neg = args.neg_thr
logging.info("Negative Threshold: %s", thr_neg)
thr_diff = 1 + int(math.log(thr, (1 - error_rate) / (error_rate / 3)))
thr_neg_diff = 1 + int(
math.log(thr_neg, (1 - error_rate) / (error_rate / 3)))
logging.debug("Thr. Diff.: %s - Thr. Neg. Diff.: %s", thr_diff,
thr_neg_diff)
logging.info("Started reading WIF file...")
id = 0
orig_reads = {}
site_alleles = {} # dic[site] = major and minor allele
with open(args.wif_file, "r") as f:
queue = {}
reads = {}
for line in f:
id += 1
# tokenize line, get first and last site
tokens = line.split(' : ')[:-2]
begin_str = tokens[0].split()[0]
snps = []
for t in tokens:
toks = t.split()
site = int(toks[0])
nucl = toks[1]
zyg = int(toks[2])
qual = int(toks[3])
if int(zyg) == 0:
snps.append('G')
else:
snps.append('C')
# add to alleles dictionary, checking for discordancy (multi-allelic)
if site not in site_alleles:
site_alleles[site] = ['', '']
if not site_alleles[site][zyg]:
site_alleles[site][zyg] = nucl
else:
deg = 'minor' if zyg else 'major'
cur = str(site_alleles[site][zyg])
errsuf = ', current ' + deg + ' allele: ' + cur
errsuf += '\n\tis discordant with new allele: ' + nucl
assert site_alleles[site][zyg] == nucl, 'at site: ' + str(
site) + errsuf
#(id, begin_str, *snps) = line.split()
begin = int(begin_str)
end = begin + len(snps)
logging.debug("id: %s - pos: %s - snps: %s", id, begin,
"".join(snps))
orig_reads[id] = [t.split() for t in tokens]
gblue.add_node(id, begin=begin, end=end, sites="".join(snps))
gnotblue.add_node(id, begin=begin, end=end, sites="".join(snps))
gred.add_node(id, begin=begin, end=end, sites="".join(snps))
gnotred.add_node(id, begin=begin, end=end, sites="".join(snps))
queue[id] = {'begin': begin, 'end': end, 'sites': snps}
reads[id] = {'begin': begin, 'end': end, 'sites': snps}
for x in [id for id in queue.keys() if queue[id]['end'] <= begin]:
del queue[x]
for id1 in queue.keys():
if id != id1:
match, mismatch = eval_overlap(queue[id1], queue[id])
if match + mismatch >= thr_neg_diff and min(
match,
mismatch) / (match + mismatch) <= max_error_rate:
if match - mismatch >= thr_diff:
gblue.add_edge(id1,
id,
match=match,
mismatch=mismatch)
if mismatch - match >= thr_diff:
gred.add_edge(id1,
id,
match=match,
mismatch=mismatch)
if match - mismatch >= thr_neg_diff:
gnotred.add_edge(id1,
id,
match=match,
mismatch=mismatch)
if mismatch - match >= thr_neg_diff:
gnotblue.add_edge(id1,
id,
match=match,
mismatch=mismatch)
logging.info("Finished reading WIF file.")
logging.info("N. WIF entries: %s", id)
logging.info("Blue Graph")
logging.info("Nodes: %s - Edges: %s - ConnComp: %s",
nx.number_of_nodes(gblue), nx.number_of_edges(gblue),
len(list(nx.connected_components(gblue))))
logging.info("Non-Blue Graph")
logging.info("Nodes: %s - Edges: %s - ConnComp: %s",
nx.number_of_nodes(gnotblue), nx.number_of_edges(gnotblue),
len(list(nx.connected_components(gnotblue))))
logging.info("Red Graph")
logging.info("Nodes: %s - Edges: %s - ConnComp: %s",
nx.number_of_nodes(gred), nx.number_of_edges(gred),
len(list(nx.connected_components(gred))))
logging.info("Non-Red Graph")
logging.info("Nodes: %s - Edges: %s - ConnComp: %s",
nx.number_of_nodes(gnotred), nx.number_of_edges(gnotred),
len(list(nx.connected_components(gnotred))))
# We consider the notblue edges as an evidence that two reads
# should not be merged together
# Since we want to merge each blue connected components into
# a single superread, we check each notblue edge (r1, r2) and
# we remove some blue edges so that r1 and r2 are not in the
# same blue connected component
blue_component = {}
current_component = 0
for conncomp in nx.connected_components(gblue):
for v in conncomp:
blue_component[v] = current_component
current_component += 1
# Keep only the notblue edges that are inside a blue connected component
good_notblue_edges = [(v, w) for (v, w) in gnotblue.edges()
if blue_component[v] == blue_component[w]]
notblue_counter = 0
num_notblue = len(good_notblue_edges)
block = num_notblue // 100
num_blue = len(list(nx.connected_components(gblue)))
for (u, v) in good_notblue_edges:
while v in nx.node_connected_component(gblue, u):
path = nx.shortest_path(gblue, source=u, target=v)
# Remove the edge with the smallest support
# A better strategy is to weight each edge with -log p
# and remove the minimum (u,v)-cut
w, x = (min(zip(path[:-1], path[1:]),
key=lambda p: gblue[p[0]][p[1]]['match'] - gblue[p[0]][
p[1]]['mismatch']))
gblue.remove_edge(w, x)
# Merge blue components (somehow)
logging.info("Started Merging Reads...")
superreads = {} # superreads given by the clusters (if clustering)
rep = {} # cluster representative of a read in a cluster
if (args.graph_file):
logging.info("Printing graph in %s file", args.graph_file)
graph_out = open(args.graph_file, "w")
for cc in nx.connected_components(gblue):
if len(cc) > 1:
if (args.graph_file):
graph_out.write(' '.join([str(id) for id in cc]) + "\n")
r = min(cc)
superreads[r] = {}
for id in cc:
rep[id] = r
logging.debug("rep: %s - cc: %s", r,
",".join([str(id) for id in cc]))
for id in orig_reads:
if id in rep:
for tok in orig_reads[id]:
site = int(tok[0])
zyg = int(tok[2])
qual = int(tok[3])
r = rep[id]
if site not in superreads[r]:
superreads[r][site] = [0, 0]
superreads[r][site][zyg] += qual
with open(args.out_file, "w") as out:
for id in orig_reads:
if id in rep:
if id == rep[id]:
for site in sorted(superreads[id]):
z = superreads[id][site]
if z[0] >= z[1]:
out.write(" ".join(
str(el) for el in [
site, site_alleles[site][0], 0, z[0] -
z[1], ':', ''
]))
elif z[1] > z[0]:
out.write(" ".join(
str(el) for el in [
site, site_alleles[site][1], 1, z[1] -
z[0], ':', ''
]))
out.write("# X : X\n")
else:
for tok in orig_reads[id]:
out.write(" ".join(str(t) for t in tok) + " : ")
out.write("# X : X\n")
logging.info("Finished Merging Reads.")
logging.info("Program Finshed")
# load data
num_nodes = 1991
num_partitions = 12
with open('data/India_database.p', 'rb') as f:
database = pickle.load(f)
G = nx.Graph()
nG = nx.Graph()
for i in range(num_nodes):
G.add_node(i)
nG.add_node(i)
for edge in database['edges']:
G.add_edge(edge[0], edge[1])
nG.add_edge(edge[0], edge[1])
start_edges = nx.number_of_edges(G)
# Load precomputed noisy version
save_name = "village_noise.txt"
with open(save_name, "rb") as fp:
nG = pickle.load(fp)
database['labels'] = database['label']
print('---Data files loaded. Computing...\n')
def process_sgwl_village(cost,
database,
num_nodes,
num_partitions,
network_name = args.pickle[:-7]
with open(network_name + "_properties.txt", "w") as file:
#------------------------------------------------#
### Network properties ###
#------------------------------------------------#
file.write("### Network properties ###\n")
### Number of nodes ###
nnodes = nx.number_of_nodes(G)
nnodes_str = str(nx.number_of_nodes(G))
file.write("Number_of_nodes\t" + nnodes_str + "\n")
### Number of edges ###
nedges = nx.number_of_edges(G)
nedges_str = str(nx.number_of_edges(G))
file.write("Number_of_edges\t" + nedges_str + "\n")
### Mean degree ###
mean_degree = str((2 * nedges) / nnodes)
file.write("Mean_degree\t" + mean_degree + "\n")
### Average clustering coefficient ###
# The following code works exactly like the nx method, but the nx version was not outputting any values at first
clust_coef = nx.clustering(G)
cc_holder = []
for key, value in clust_coef.items():
cc_holder.append(value)
file.write("Average_clustering_coefficient\t" +
def graph_test(filename):
print('')
print('Getting graph..')
DG, terms, root = get_graph(filename, with_root=True)
print('Getting graph is finished')
print("")
terms = list(set(terms) - {root})
# DG, terms = get_graph('WRP4/wrp4-11.stp')
print_graph(DG)
v = nx.number_of_nodes(DG)
e = nx.number_of_edges(DG)
print("Number of vertices: ", v)
print("Number of reachable vertices: ", len(nx.descendants(DG, root)) + 1)
print("Number of edges: ", e)
print('')
print('apsp started')
start_time = time.time()
tr_cl = trans_clos(DG)
elapsed_time = time.time() - start_time
print('apsp finished in', elapsed_time)
# print_graph(tr_cl)
max_len = 0
max_node = None
for node in nx.nodes(tr_cl):
# print(node, tr_cl.out_edges(node))
if len(tr_cl.out_edges(node)) > max_len:
max_len = len(tr_cl.out_edges(node))
max_node = node
print("max node ", max_node)
print("intersect",
set(v for x, v in tr_cl.out_edges(max_node)) & set(terms))
i = 1
print('Alg6 with i = ', i, 'started')
start_time = time.time()
set_start_time(start_time)
terms.sort()
tree = alg6(tr_cl, i=2, k=len(terms), r=root, x=terms)
elapsed_time = time.time() - start_time
print('Elapsed time = ', elapsed_time)
tot_weight = tree.size(weight='weight')
print('Weight of MSTw = ', tot_weight)
print_graph(tree)
exit()
prev = dict()
for i in [1, 2]:
# try:
# if not (('alg3-' + str(i)) not in prev or prev[('alg3-' + str(i))]):
# raise Exception('')
# raise Exception()
# print('alg3-' + str(i), 'started..')
# start_time = time.time()
# set_start_time(start_time)
# tree = alg3(tr_cl, i=i, k=len(terms.copy()), r=root, x=terms.copy())
# elapsed_time = time.time() - start_time
# tot_weight = tot_weight = tree.size(weight='weight')
# print('alg3-' + str(i), 'finished in', elapsed_time, 'with res =', tot_weight)
# print('')
# save_time(v, e, 'alg3-' + str(i), elapsed_time, tot_weight)
# prev['alg3-' + str(i)] = True
# except:
# save_time(v, e, 'alg3-' + str(i), '-', '-')
# print('Alg took to long to compute')
# prev['alg3-' + str(i)] = False
# try:
# if not (('alg4-' + str(i)) not in prev or prev[('alg3-' + str(i))]):
# raise Exception('')
# raise Exception()
# print('alg4-' + str(i), 'started..')
# start_time = time.time()
# set_start_time(start_time)
# tree = alg4(tr_cl, i=i, k=len(terms.copy()), r=root, x=terms.copy())
# elapsed_time = time.time() - start_time
# tot_weight = tree.size(weight='weight')
# print('alg4-' + str(i), 'finished in', elapsed_time, 'with res =', tot_weight)
# print('')
# save_time(v, e, 'alg4-' + str(i), elapsed_time, tot_weight)
# prev['alg4-' + str(i)] = True
# except:
# save_time(v, e, 'alg4-' + str(i), '-', '-')
# print('Alg took to long to compute')
# prev['alg4-' + str(i)] = False
# try:
if not (('alg6-' + str(i)) not in prev or prev[('alg6-' + str(i))]):
raise Exception('')
print('alg6-' + str(i), 'started..')
start_time = time.time()
set_start_time(start_time)
tree = alg6(tr_cl, i=i, k=len(terms.copy()), r=root, x=terms.copy())
elapsed_time = time.time() - start_time
tot_weight = tree.size(weight='weight')
print('alg6-' + str(i), 'finished in', elapsed_time, 'with res =',
tot_weight)
print('')
save_time(v, e, 'alg6-' + str(i), elapsed_time, tot_weight)
prev['alg6-' + str(i)] = True
def get_ave_fill_factor(Gn):
return np.mean([nx.number_of_edges(G) / (nx.number_of_nodes(G)
* nx.number_of_nodes(G)) for G in Gn])
def wrp_test(filename=None, g=None, terms=None, root=None):
global prev
if g is None:
# print('')
# print('Getting graph..')
DG, terms, root = get_graph(filename, with_root=True)
# print_graph(DG)
v = nx.number_of_nodes(DG)
e = nx.number_of_edges(DG)
print('root is', root)
print("Number of vertices: ", v)
print("Number of reachable vertices: ",
len(nx.descendants(DG, root)) + 1)
print("Number of edges: ", e)
print('')
print('apsp started')
start_time = time.time()
tr_cl = trans_clos_dense(DG)
# print_graph(tr_cl)
elapsed_time = time.time() - start_time
print('apsp finished in', elapsed_time)
terms = list(set(terms) - {root})
terms.sort()
i = 2
print('Alg6 with i = ', i, 'started')
start_time = time.time()
set_start_time(start_time)
terms.sort()
tree = alg3(tr_cl, i=4, k=len(terms), r=root, x=terms)
elapsed_time = time.time() - start_time
print('Elapsed time = ', elapsed_time)
tot_weight = tree.size(weight='weight')
print('Weight of MSTw = ', tot_weight)
print_graph(tree)
exit()
else:
DG = g
v = nx.number_of_nodes(DG)
e = nx.number_of_edges(DG)
print('root is', root)
print("Number of vertices: ", v)
print("Number of reachable vertices: ",
len(nx.descendants(DG, root)) + 1)
print("Number of edges: ", e)
print('')
print('apsp started')
start_time = time.time()
tr_cl = trans_clos_dense(DG)
# print_graph(tr_cl)
elapsed_time = time.time() - start_time
print('apsp finished in', elapsed_time)
terms = list(set(terms) - {root})
terms.sort()
for i in [4]:
try:
if not (('alg3-' + str(i)) not in prev
or prev[('alg3-' + str(i))]):
raise Exception('')
print('alg3-' + str(i), 'started..')
start_time = time.time()
set_start_time(start_time)
tree = alg3(tr_cl,
i=i,
k=len(terms.copy()),
r=root,
x=terms.copy())
elapsed_time = time.time() - start_time
tot_weight = tree.size(weight='weight')
print('alg3-' + str(i), 'finished in', elapsed_time, 'with res =',
tot_weight)
print('')
save_time(v, e, len(terms), 'alg3-' + str(i), elapsed_time,
tot_weight)
prev['alg3-' + str(i)] = True
except:
save_time(v, e, len(terms), 'alg3-' + str(i), '-', '-')
print('Alg took to long to compute')
prev['alg3-' + str(i)] = False
try:
if not (('alg4-' + str(i)) not in prev
or prev[('alg3-' + str(i))]):
raise Exception('')
print('alg4-' + str(i), 'started..')
start_time = time.time()
set_start_time(start_time)
tree = alg4(tr_cl,
i=i,
k=len(terms.copy()),
r=root,
x=terms.copy())
elapsed_time = time.time() - start_time
tot_weight = tree.size(weight='weight')
print('alg4-' + str(i), 'finished in', elapsed_time, 'with res =',
tot_weight)
print('')
save_time(v, e, len(terms), 'alg4-' + str(i), elapsed_time,
tot_weight)
prev['alg4-' + str(i)] = True
except:
save_time(v, e, len(terms), 'alg4-' + str(i), '-', '-')
print('Alg took to long to compute')
prev['alg4-' + str(i)] = False
try:
if not (('alg6-' + str(i)) not in prev
or prev[('alg6-' + str(i))]):
raise Exception('')
print('alg6-' + str(i), 'started..')
start_time = time.time()
set_start_time(start_time)
tree = alg6(tr_cl,
i=i,
k=len(terms.copy()),
r=root,
x=terms.copy())
elapsed_time = time.time() - start_time
tot_weight = tree.size(weight='weight')
print('alg6-' + str(i), 'finished in', elapsed_time, 'with res =',
tot_weight)
print('')
save_time(v, e, len(terms), 'alg6-' + str(i), elapsed_time,
tot_weight)
prev['alg6-' + str(i)] = True
except:
save_time(v, e, len(terms), 'alg6-' + str(i), '-', '-')
print('Alg took to long to compute')
prev['alg6-' + str(i)] = False
ideal_ratio_negpos = expec_neg / expec_pos
#Calculate the non-normalized deviation from the expected (full) graph
dev_posneg = obs_posneg_ratio / ideal_ratio_posneg
dev_negpos = obs_negpos_ratio / ideal_ratio_negpos
#Calculate the normalized deviation from the expected (full) graph
dev_norm_posneg = (obs_posneg_ratio - ideal_ratio_posneg) / ideal_ratio_posneg
dev_norm_negpos = (obs_negpos_ratio - ideal_ratio_negpos) / ideal_ratio_negpos
# calculate the normalized deviation of the edge:node (density) from the full graph
dens_dev = (abs(obs_edge_node_ratio -
expec_edge_node_ratio)) / expec_edge_node_ratio
# Calculate PUC (the proportion of edges that do not follow the expected direction)
puc = puc_noncompliant / nx.number_of_edges(G)
dev_dict = {}
dev_dict['OBSERVED_number_nodes_positive'] = pos_nodes
dev_dict['OBSERVED_number_nodes_negative'] = neg_nodes
dev_dict['OBSERVED_number_edges_positive'] = pos_corr
dev_dict['OBSERVED_number_edges_negative'] = neg_corr
dev_dict['OBSERVED_ratio_pos_to_neg_nodes'] = round(obs_posneg_node_ratio, 2)
dev_dict['OBSERVED_ratio_neg_to_pos_nodes'] = round(obs_negpos_node_ratio, 2)
dev_dict['OBSERVED_edge_node_ratio'] = round(obs_edge_node_ratio, 2)
dev_dict['OBSERVED_ratio_pos_to_neg_edges'] = round(obs_posneg_ratio, 2)
dev_dict['OBSERVED_ratio_neg_to_pos_edges'] = round(obs_negpos_ratio, 2)
dev_dict['IDEAL_total_number_edges_full_graph'] = expec_total
dev_dict['IDEAL_number_positive_edges_full_graph'] = expec_pos
dev_dict['IDEAL_number_negative_edges_full_graph'] = expec_neg
dev_dict['IDEAL_density_full_graph'] = round(expec_edge_node_ratio, 2)
@author: megan squire
"""
import networkx as nx
import operator
# create a graph, filling it with one of the edgelists
g = nx.read_weighted_edgelist('data/edgelist24.csv')
# analyze the basic graph
# make a Python dictionary full of each node and their degrees
degree = nx.degree(g)
# calculate some basic stuff about the nodes & degrees
numNodes = nx.number_of_nodes(g)
numEdges = nx.number_of_edges(g)
minDegree = min(degree.values())
maxDegree = max(degree.values())
print('numNodes:', numNodes)
print('numEdges:', numEdges)
print('minDegree:', minDegree)
print('maxDegree:', maxDegree)
# sort the dictionary by highest degrees
degreeSorted = sorted(degree.items(), key=operator.itemgetter(1), reverse=True)
# print out the top ten nodes with the highest degrees
print(degreeSorted[0:9])
# draw the graph - you will see that it is very crowded,
# but some structure is apparent
import networkx as nx
import matplotlib.pyplot as plt
import numpy as np
filename = "CA-CondMat.txt"
RN = nx.read_edgelist(filename)
n_RN = nx.number_of_edges(RN)
RN_list = [RN]
for i in range(4):
RN_list.append(
nx.double_edge_swap(RN.copy(),
nswap=int(n_RN * (i + 1) * 0.1),
max_tries=2 * (i + 1) * n_RN))
nx.write_edgelist(RN_list[i], 'RN_' + str(i + 1) + '.txt', data=False)
nn_RN = nx.number_of_nodes(RN)
avg_deg_of_node = np.mean((RN.degree()).values())
GN_list = []
for i in range(5):
GN_list.append(
nx.barabasi_albert_graph(nn_RN + 1000 * i, int(avg_deg_of_node)))
nx.write_edgelist(GN_list[i], 'GN_' + str(i + 1) + '.txt', data=False)
def _build_graph(self) -> None:
self.G.clear()
self.G.name = "Domain transition graph for {0}.".format(self.policy)
self.log.info("Building domain transition graph from {0}...".format(
self.policy))
# hash tables keyed on domain type
setexec: RuleHash = defaultdict(list)
setcurrent: RuleHash = defaultdict(list)
# hash tables keyed on (domain, entrypoint file type)
# the parameter for defaultdict has to be callable
# hence the lambda for the nested defaultdict
execute: DefaultDict[Type,
RuleHash] = defaultdict(lambda: defaultdict(list))
entrypoint: DefaultDict[Type, RuleHash] = defaultdict(
lambda: defaultdict(list))
# hash table keyed on (domain, entrypoint, target domain)
type_trans: DefaultDict[Type, DefaultDict[Type, RuleHash]] = \
defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
for rule in self.policy.terules():
if rule.ruletype == TERuletype.allow:
if rule.tclass not in ["process", "file"]:
continue
if rule.tclass == "process":
if "transition" in rule.perms:
for s, t in itertools.product(rule.source.expand(),
rule.target.expand()):
# only add edges if they actually
# transition to a new type
if s != t:
edge = Edge(self.G, s, t, create=True)
edge.transition.append(rule)
if "dyntransition" in rule.perms:
for s, t in itertools.product(rule.source.expand(),
rule.target.expand()):
# only add edges if they actually
# transition to a new type
if s != t:
e = Edge(self.G, s, t, create=True)
e.dyntransition.append(rule)
if "setexec" in rule.perms:
for s in rule.source.expand():
setexec[s].append(rule)
if "setcurrent" in rule.perms:
for s in rule.source.expand():
setcurrent[s].append(rule)
else:
if "execute" in rule.perms:
for s, t in itertools.product(rule.source.expand(),
rule.target.expand()):
execute[s][t].append(rule)
if "entrypoint" in rule.perms:
for s, t in itertools.product(rule.source.expand(),
rule.target.expand()):
entrypoint[s][t].append(rule)
elif rule.ruletype == TERuletype.type_transition:
if rule.tclass != "process":
continue
d = rule.default
for s, t in itertools.product(rule.source.expand(),
rule.target.expand()):
type_trans[s][t][d].append(rule)
invalid_edge: List[Edge] = []
clear_transition: List[Edge] = []
clear_dyntransition: List[Edge] = []
for s, t in self.G.edges():
edge = Edge(self.G, s, t)
invalid_trans = False
invalid_dyntrans = False
if edge.transition:
# get matching domain exec w/entrypoint type
entry = set(entrypoint[t].keys())
exe = set(execute[s].keys())
match = entry.intersection(exe)
if not match:
# there are no valid entrypoints
invalid_trans = True
else:
# TODO try to improve the
# efficiency in this loop
for m in match:
# pylint: disable=unsupported-assignment-operation
if s in setexec or type_trans[s][m]:
# add key for each entrypoint
edge.entrypoint[m] += entrypoint[t][m]
edge.execute[m] += execute[s][m]
if type_trans[s][m][t]:
edge.type_transition[m] += type_trans[s][m][t]
if s in setexec:
edge.setexec.extend(setexec[s])
if not edge.setexec and not edge.type_transition:
invalid_trans = True
else:
invalid_trans = True
if edge.dyntransition:
if s in setcurrent:
edge.setcurrent.extend(setcurrent[s])
else:
invalid_dyntrans = True
else:
invalid_dyntrans = True
# cannot change the edges while iterating over them,
# so keep appropriate lists
if invalid_trans and invalid_dyntrans:
invalid_edge.append(edge)
elif invalid_trans:
clear_transition.append(edge)
elif invalid_dyntrans:
clear_dyntransition.append(edge)
# Remove invalid transitions
self.G.remove_edges_from(invalid_edge)
for edge in clear_transition:
# if only the regular transition is invalid,
# clear the relevant lists
del edge.transition
del edge.execute
del edge.entrypoint
del edge.type_transition
del edge.setexec
for edge in clear_dyntransition:
# if only the dynamic transition is invalid,
# clear the relevant lists
del edge.dyntransition
del edge.setcurrent
self.rebuildgraph = False
self.rebuildsubgraph = True
self.log.info("Completed building domain transition graph.")
self.log.debug("Graph stats: nodes: {0}, edges: {1}.".format(
nx.number_of_nodes(self.G), nx.number_of_edges(self.G)))
def test_union_and_compose():
K3 = nx.complete_graph(3)
P3 = nx.path_graph(3)
G1 = nx.DiGraph()
G1.add_edge("A", "B")
G1.add_edge("A", "C")
G1.add_edge("A", "D")
G2 = nx.DiGraph()
G2.add_edge("1", "2")
G2.add_edge("1", "3")
G2.add_edge("1", "4")
G = nx.union(G1, G2)
H = nx.compose(G1, G2)
assert edges_equal(G.edges(), H.edges())
assert not G.has_edge("A", 1)
pytest.raises(nx.NetworkXError, nx.union, K3, P3)
H1 = nx.union(H, G1, rename=("H", "G1"))
assert sorted(H1.nodes()) == [
"G1A",
"G1B",
"G1C",
"G1D",
"H1",
"H2",
"H3",
"H4",
"HA",
"HB",
"HC",
"HD",
]
H2 = nx.union(H, G2, rename=("H", ""))
assert sorted(H2.nodes()) == [
"1",
"2",
"3",
"4",
"H1",
"H2",
"H3",
"H4",
"HA",
"HB",
"HC",
"HD",
]
assert not H1.has_edge("NB", "NA")
G = nx.compose(G, G)
assert edges_equal(G.edges(), H.edges())
G2 = nx.union(G2, G2, rename=("", "copy"))
assert sorted(G2.nodes()) == [
"1",
"2",
"3",
"4",
"copy1",
"copy2",
"copy3",
"copy4",
]
assert sorted(G2.neighbors("copy4")) == []
assert sorted(G2.neighbors("copy1")) == ["copy2", "copy3", "copy4"]
assert len(G) == 8
assert nx.number_of_edges(G) == 6
E = nx.disjoint_union(G, G)
assert len(E) == 16
assert nx.number_of_edges(E) == 12
E = nx.disjoint_union(G1, G2)
assert sorted(E.nodes()) == [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
G = nx.Graph()
H = nx.Graph()
G.add_nodes_from([(1, {"a1": 1})])
H.add_nodes_from([(1, {"b1": 1})])
R = nx.compose(G, H)
assert R.nodes == {1: {"a1": 1, "b1": 1}}
print(
"USAGE: provide input TSV edge list filepath, followed by output filepath."
)
file_path = sys.argv[1]
output_file_path = sys.argv[2]
# Create a directed graph from the edgelist file
G = nx.read_edgelist(file_path, create_using=nx.DiGraph())
# Remove self-loops
G.remove_edges_from(G.selfloop_edges())
# Consider only the largest component
G = max(nx.strongly_connected_component_subgraphs(G), key=len)
G = nx.convert_node_labels_to_integers(G)
graph_file = open(output_file_path, "w")
n = nx.number_of_nodes(G)
m = nx.number_of_edges(G)
graph_file.write(f"{n:d} {m:d}\n")
for u in range(n):
# Add random capacity in the range [1,10]
graph_file.write(" ".join(
str(v) + " " + str(np.random.randint(1, 11))
for v in set(nx.all_neighbors(G, u))) + "\n")
graph_file.close()
def lattice_reference(G, niter=1, D=None, connectivity=True, seed=None):
"""Latticize the given graph by swapping edges.
Parameters
----------
G : graph
An undirected graph with 4 or more nodes.
niter : integer (optional, default=1)
An edge is rewired approximatively niter times.
D : numpy.array (optional, default=None)
Distance to the diagonal matrix.
connectivity : boolean (optional, default=True)
Ensure connectivity for the latticized graph when set to True.
seed : integer, random_state, or None (default)
Indicator of random number generation state.
See :ref:`Randomness<randomness>`.
Returns
-------
G : graph
The latticized graph.
Notes
-----
The implementation is adapted from the algorithm by Sporns et al. [1]_.
which is inspired from the original work by Maslov and Sneppen(2002) [2]_.
References
----------
.. [1] Sporns, Olaf, and Jonathan D. Zwi.
"The small world of the cerebral cortex."
Neuroinformatics 2.2 (2004): 145-162.
.. [2] Maslov, Sergei, and Kim Sneppen.
"Specificity and stability in topology of protein networks."
Science 296.5569 (2002): 910-913.
"""
import numpy as np
from networkx.utils import cumulative_distribution, discrete_sequence
local_conn = nx.connectivity.local_edge_connectivity
if G.is_directed():
msg = "lattice_reference() not defined for directed graphs."
raise nx.NetworkXError(msg)
if len(G) < 4:
raise nx.NetworkXError("Graph has less than four nodes.")
# Instead of choosing uniformly at random from a generated edge list,
# this algorithm chooses nonuniformly from the set of nodes with
# probability weighted by degree.
G = G.copy()
keys, degrees = zip(*G.degree()) # keys, degree
cdf = cumulative_distribution(degrees) # cdf of degree
nnodes = len(G)
nedges = nx.number_of_edges(G)
if D is None:
D = np.zeros((nnodes, nnodes))
un = np.arange(1, nnodes)
um = np.arange(nnodes - 1, 0, -1)
u = np.append((0, ), np.where(un < um, un, um))
for v in range(int(np.ceil(nnodes / 2))):
D[nnodes - v - 1, :] = np.append(u[v + 1:], u[:v + 1])
D[v, :] = D[nnodes - v - 1, :][::-1]
niter = niter * nedges
ntries = int(nnodes * nedges / (nnodes * (nnodes - 1) / 2))
swapcount = 0
for i in range(niter):
n = 0
while n < ntries:
# pick two random edges without creating edge list
# choose source node indices from discrete distribution
(ai, ci) = discrete_sequence(2, cdistribution=cdf, seed=seed)
if ai == ci:
continue # same source, skip
a = keys[ai] # convert index to label
c = keys[ci]
# choose target uniformly from neighbors
b = seed.choice(list(G.neighbors(a)))
d = seed.choice(list(G.neighbors(c)))
bi = keys.index(b)
di = keys.index(d)
if b in [a, c, d] or d in [a, b, c]:
continue # all vertices should be different
# don't create parallel edges
if (d not in G[a]) and (b not in G[c]):
if D[ai, bi] + D[ci, di] >= D[ai, ci] + D[bi, di]:
# only swap if we get closer to the diagonal
G.add_edge(a, d)
G.add_edge(c, b)
G.remove_edge(a, b)
G.remove_edge(c, d)
# Check if the graph is still connected
if connectivity and local_conn(G, a, b) == 0:
# Not connected, revert the swap
G.remove_edge(a, d)
G.remove_edge(c, b)
G.add_edge(a, b)
G.add_edge(c, d)
else:
swapcount += 1
break
n += 1
return G
words2 = G.node[j]["text"]
sum = 0
avgSimilarity = 0
for x in words:
for y in words2:
if (len(words) !=0 and len(words2) !=0):
sum += model.wv.similarity(w1=x, w2=y)
if (len(words) !=0 and len(words2) !=0):
avg = sum /(len(words) * len(words2))
# print(avg)
for z in range(0,len(G.node[i]["topic"])):
if G.node[i]["topic"][z] in G.node[j]["topic"]:
G.add_edge(i, j, weight=avg)
print(datetime.datetime.now())
print(nx.number_of_edges(G))
print(nx.number_of_nodes(G))
# print(G.node[16]["text"])
# print(G.node[16]["topic"])
# print(G.get_edge_data(0,16))
# print(G.node[0]["text"])
# print(G.node[0]["topic"])
elarge = [(u, v) for (u, v, d) in G.edges(data=True) if d['weight'] > 0.2]
esmall = [(u, v) for (u, v, d) in G.edges(data=True) if d['weight'] <= 0.2]
nx.draw(G, with_labels=True, font_weight='bold', node_size=100, edgelist=elarge,
width=1, edge_color='b')
nx.draw(G, with_labels=True, font_weight='bold', node_size=100, edgelist=esmall,edge_color='g')
words = set()
for line in fh.readlines():
line = line.decode()
if line.startswith("*"):
continue
w = str(line[0:4])
words.add(w)
return generate_graph(words)
if __name__ == "__main__":
G = words_graph()
print("Loaded words_dat.txt containing 2174 four-letter English words.")
print("Two words are connected if they differ in one letter.")
print("Graph has %d nodes with %d edges" %
(nx.number_of_nodes(G), nx.number_of_edges(G)))
print("%d connected components" % nx.number_connected_components(G))
for (source, target) in [
("cold", "warm"),
("love", "hate"),
("good", "evil"),
("pear", "beef"),
("make", "take"),
]:
print("Shortest path between %s and %s is" % (source, target))
try:
sp = nx.shortest_path(G, source, target)
for n in sp:
print(n)
except nx.NetworkXNoPath:
# Read graph as a MultiGraph.
g = nx.read_edgelist(sys.argv[1],
nodetype=int,
create_using=nx.MultiGraph(),
data=[("key", int)])
# Combine edges with the reverse sorted pair of the degree of their nodes,
# then sort based on degrees pairs, breaking ties with the smallest degree.
data = sorted([(e, (g.degree(e[0]), g.degree(e[1])))
if g.degree(e[0]) > g.degree(e[1])
else (e, (g.degree(e[1]),g.degree(e[0])))
for e in g.edges],
key=lambda x: x[1], reverse=True)
T = nx.number_of_edges(g)
avg = (T - 1) / 2
# Output ordering, with an average rank for tied edges.
class_content = []
class_type = data[0][1] # degree-degree pair
class_base_time = 0
for t, x in enumerate(data):
if x[1] != class_type:
for c in class_content:
# if class_base_time > avg:
# print(*c, class_base_time)
# elif class_base_time + len(class_content) < avg:
# print(*c, class_base_time + len(class_content))
# else:
# print(*c, avg)
def test_nX_decompose(primal_graph):
# check that missing geoms throw an error
G = primal_graph.copy()
del G[0][1][0]['geom']
with pytest.raises(KeyError):
graphs.nX_decompose(G, 20)
# check that non-LineString geoms throw an error
G = primal_graph.copy()
for s, e, k in G.edges(keys=True):
G[s][e][k]['geom'] = geometry.Point([G.nodes[s]['x'], G.nodes[s]['y']])
break
with pytest.raises(TypeError):
graphs.nX_decompose(G, 20)
# test decomposition
G = primal_graph.copy()
# first clean the graph to strip disconnected looping component
# this gives a start == end node situation for testing
G_simple = graphs.nX_remove_filler_nodes(G)
G_decompose = graphs.nX_decompose(G_simple, 50)
# from cityseer.tools import plot
# plot.plot_nX(G_simple, labels=True, node_size=80, plot_geoms=True)
# plot.plot_nX(G_decompose, plot_geoms=True)
assert nx.number_of_nodes(G_decompose) == 292
assert nx.number_of_edges(G_decompose) == 314
for s, e in G_decompose.edges():
assert G_decompose.number_of_edges(s, e) == 1
# check that total lengths are the same
G_lens = 0
for s, e, e_data in G_simple.edges(data=True):
G_lens += e_data['geom'].length
G_d_lens = 0
for s, e, e_data in G_decompose.edges(data=True):
G_d_lens += e_data['geom'].length
assert np.allclose(G_lens, G_d_lens, atol=0.001, rtol=0)
# check that geoms are correctly flipped
G_forward = primal_graph.copy()
G_forward_decompose = graphs.nX_decompose(G_forward, 20)
G_backward = primal_graph.copy()
for i, (s, e, k, d) in enumerate(G_backward.edges(data=True, keys=True)):
# flip each third geom
if i % 3 == 0:
G[s][e][k]['geom'] = geometry.LineString(d['geom'].coords[::-1])
G_backward_decompose = graphs.nX_decompose(G_backward, 20)
for n, d in G_forward_decompose.nodes(data=True):
assert d['x'] == G_backward_decompose.nodes[n]['x']
assert d['y'] == G_backward_decompose.nodes[n]['y']
# test that geom coordinate mismatch throws an error
G = primal_graph.copy()
for k in ['x', 'y']:
for n in G.nodes():
G.nodes[n][k] = G.nodes[n][k] + 1
break
with pytest.raises(ValueError):
graphs.nX_decompose(G, 20)
movie = 'Batman'
movie_actors = []
for row in spamreader:
if row[2] not in actors:
actors.append(row[2])
G.add_node(row[2])
if movie == row[1]:
for a in movie_actors:
G.add_edge(a,row[2])
else:
movie = row[1]
movie_actors = []
movie_actors.append(row[2])
print "Nodes:",nx.number_of_nodes(G)
print "Edges:",nx.number_of_edges(G)
print "Density:",nx.density(G)
if(nx.is_connected(G)): print("Graph connected")
else: print("Graph disconnected")
c = [degree_centrality, eigenvector_centrality]
for cen in c:
best = 0
top = []
ce = cen(G)
for i in range(1,10):
best = max(ce, key=ce.get)
ce.pop(best,None)
top.append(best)
print(top)
sSQL = sSQL + " 'Country-Router' AS RouterType"
sSQL = sSQL + " from"
sSQL = sSQL + " Assess_IP_DATA as A"
sSQL = sSQL + " ORDER BY A.Country;"
CompanyData = pd.read_sql_query(sSQL, conn)
print('################')
for i in range(CompanyData.shape[0]):
sNode = str(CompanyData['NodeName'][i])
sRouterType = str(CompanyData['RouterType'][i])
sGroupName0 = str(CompanyData['GroupName0'][i])
G.add_node(sNode, routertype=sRouterType, group0=sGroupName0)
print('################################')
print("Nodes of graph: ", nx.number_of_nodes(G))
print("Edges of graph: ", nx.number_of_edges(G))
print('################################')
print('################')
sTable = 'Assess_IP_Country'
print('Storing :', sDatabaseName, ' Table:', sTable)
CompanyData.to_sql(sTable, conn, if_exists="replace")
print('################')
################################################################
print('################')
sTable = 'Assess_IP_DATA'
print('Loading :', sDatabaseName, ' Table:', sTable)
sSQL = "select distinct"
sSQL = sSQL + " A.Country,"
sSQL = sSQL + " A.PlaceName,"
sSQL = sSQL + " A.PlaceName || '-' || A.Country AS NodeName,"
def MVC_BnB(self, G, cutOffTime):
initialUpdaterate = 10
if G.number_of_nodes() > 10000:
initialUpdaterate = G.number_of_nodes()/500
trace = open(self.traceFileName, 'w')
start_time = time.time()
sub_problems = indexMinPQ()
approxVC = self.approxMVC(G)
lowerBound = len(approxVC)/2
sub_problems.push( (None, tuple(G.nodes()), tuple(G.nodes()), lowerBound),
G.number_of_edges())
#Initialize the optimum to the approximate vertex cover
optimum = (len(approxVC), approxVC)
current_time = time.time() - start_time
trace.write(str(current_time) + ', ' + str(optimum[0]) + '\n')
counter = 0
while not sub_problems.isEmpty():
subProblem = sub_problems.pop()
if subProblem[0] is None:
sub_cover = []
else:
sub_cover = list(subProblem[0])
available_vertices = list(subProblem[1])
remaining_graph = G.subgraph(list(subProblem[2]))
currentLowerbound = subProblem[3]
if currentLowerbound >= optimum[0]:
pass
if len(subProblem[2]) < 500:
updateRate = 1
else:
updateRate = initialUpdaterate
max_degree_v = self.maxDegreeVertex(remaining_graph, available_vertices)
cover_add_v = list(sub_cover)
cover_add_v.append(max_degree_v)
new_residual_vertices = self.residual_graph(remaining_graph, max_degree_v)
new_available_vertices = list(set(new_residual_vertices) & set(available_vertices))
new_residual_graph = G.subgraph(new_residual_vertices)
if nx.number_of_edges( new_residual_graph ) == 0:
#Check if new optimum found, if yes update the optimum
if len(cover_add_v) < optimum[0]:
optimum = (len(cover_add_v), cover_add_v)
current_time = time.time() - start_time
trace.write(str(current_time) + ', ' + str(optimum[0]) + '\n')
elif len(new_available_vertices) > 0:
if counter % updateRate == 0:
lowerBound = len(cover_add_v) + len(self.approxMVC(new_residual_graph))/2
counter = 0
else:
lowerBound = currentLowerbound
counter += 1
if lowerBound < optimum[0]:
sub_problems.push((tuple(cover_add_v), tuple(new_available_vertices),
tuple(new_residual_vertices), lowerBound),
new_residual_graph.number_of_edges())
cover_unselect_v = list(sub_cover)
available_vertices_delete_v = list(available_vertices)
available_vertices_delete_v.remove(max_degree_v)
if len(available_vertices_delete_v) > 0 and self.isCover(max_degree_v, available_vertices_delete_v, remaining_graph):
if currentLowerbound < optimum[0]:
sub_problems.push((tuple(cover_unselect_v), tuple(available_vertices_delete_v),
subProblem[2], currentLowerbound), remaining_graph.number_of_edges())
if time.time() - start_time > cutOffTime:
break
trace.close()
output = open(self.outputFileName, 'w')
result = list(optimum[1])
result = sorted(result)
output.write(str(optimum[0])+'\n' + ' '.join(str(v)for v in result))
result = list(optimum[1])
result = sorted(result)
output.close()
