def fast_approximate_solution_two(graph):
"""
Given a graph, construct a solution greedily using approximation methods.
Performs bad.
"""
new_graph = nx.Graph()
degrees = nx.degree_centrality(graph)
largest = argmax(degrees)
new_graph.add_node(largest)
while new_graph.number_of_edges() < graph.number_of_nodes() - 1:
degrees = {n: count_uncovered_degree(graph, new_graph, n) for n in nx.nodes(graph)}
neighbor_list = [nx.neighbors(graph, n) for n in new_graph.nodes()]
neighbors = set()
for lst in neighbor_list:
neighbors = neighbors.union(lst)
if not neighbors:
break
next_largest = argmax_in(degrees, neighbors, exceptions = new_graph.nodes())
possible_edge_ends = [n for n in nx.neighbors(graph, next_largest)
if graph.has_edge(n, next_largest)
and n in new_graph.nodes()]
new_graph.add_node(next_largest)
edge_end = argmax_in(degrees, possible_edge_ends)
new_graph.add_edge(edge_end, next_largest)
return new_graph
def main():
universe = nx.read_graphml(sys.argv[1])
beings = filter(lambda x: x[1]["type"] == "Being", universe.nodes(data=True))
clients = filter(lambda x: x[1]["type"] == "client", universe.nodes(data=True))
firm = filter(lambda x: x[1]["type"] == "firm", universe.nodes(data=True))
print len(beings)
print len(clients)
print len(firm)
for b in beings:
ns = nx.neighbors(universe,b[0])
rep = ns[0]
for n in ns[1:]:
for nn in nx.neighbors(universe,n):
universe.add_edge(rep,nn) #doesn't preserve directions or properties, yolo
universe.remove_node(n)
universe.remove_node(b[0])
beings = filter(lambda x: x[1]["type"] == "Being", universe.nodes(data=True))
clients = filter(lambda x: x[1]["type"] == "client", universe.nodes(data=True))
firm = filter(lambda x: x[1]["type"] == "firm", universe.nodes(data=True))
print len(beings)
print len(clients)
print len(firm)
nx.write_graphml(universe,"simplified-{}.graphml".format(int(time.time())))
def chooseNodesByDistributionOld(self):
# try:
self.nodesToChange = [] #reset from previous turns
#choose first node based on distribution
rand = random.random()
cumProb = 0.0
currIndex = 0
currNode = self.controlledNodes[currIndex]
cumProb = cumProb+currNode[1]
while rand>cumProb:
currIndex = currIndex+1
currNode = self.controlledNodes[currIndex]
cumProb = cumProb+currNode[1]
chosenNode = copy.deepcopy(currNode[0])
currNode = chosenNode
self.nodesToChange.append(chosenNode)
#get remaining nodes from neighbors
for i in range(self.actionLimit-1): #TODO: consider randomizing number of nodes chosen; consider prioritizing just neighbors of first node
newNode = random.sample(nx.neighbors(self.knownGraph, currNode),1)
while ((len(newNode)==0)):
newNode = random.sample(nx.neighbors(self.knownGraph, currNode),1)
if newNode in self.nodesToChange:
print 'why?'
self.nodesToChange.append(newNode[0])
currNode = newNode[0]
for i in range(len(self.nodesToChange)):
for j in range(i+1,len(self.nodesToChange)):
if self.nodesToChange[i] == self.nodesToChange[j]:
print 'problem'
return self.nodesToChange
def hinges(self): """ Return a list of all detected hinge nodes """ ret = [] # Consider a node a /possible/ hinge if it meets two criteria: # - it has a degree of at least 3 # - it is in two or more visible faces for node in [x for x in self.graph.nodes_iter() if len(nx.neighbors(self.graph, x)) > 3]: neighbors = nx.neighbors(self.graph, node) faces = set() #print node for n in neighbors: f1 = self.graph[node][n]['face'] f2 = self.graph[n][node]['face'] if f1.visible: faces.add(f1) if f2.visible: faces.add(f2) if len(faces) < 2: continue #print 'sending to examine_hings' result,on = self._examine_hinge(node) if len(result) > 3: #pprint.pprint(on) #pprint.pprint(result) ret.append(node) return ret
def all_children_of(tree, A): """ returns all the children of A """ front = [] children = [] nbrs = nx.neighbors(tree, A) for n in nbrs: if n.i_time > A.i_time: front.append(n) children.append(n) if len(front) < 1: return children while 1: new_front = [] if len(front) < 1: return children for a in front: nbrs = nx.neighbors(tree, a) for n in nbrs: if n.i_time > a.i_time: new_front.append(n) children.append(n) front = new_front
def ministro_ministro(G):
"""
Cria um grafo de ministros conectados de acordo com a sobreposição de seu uso da legislação
Construido a partir to grafo ministro_lei
"""
GM = nx.Graph()
for m in G:
try:
int(m)
except ValueError:# Add only if node is a minister
if m != "None":
GM.add_node(m.decode('utf-8'))
# Add edges
for n in GM:
for m in GM:
if n == m: continue
if GM.has_edge(n,m) or GM.has_edge(m,n): continue
# Edge weight is the cardinality of the intersection each node neighbor set.
w = len(set(nx.neighbors(G,n.encode('utf-8'))) & set(nx.neighbors(G,m.encode('utf-8')))) #encode again to allow for matches
if w > 5:
GM.add_edge(n,m,{'weight':w})
# abreviate node names
GMA = nx.Graph()
GMA.add_weighted_edges_from([(o.replace('MIN.','').strip(),d.replace('MIN.','').strip(),di['weight']) for o,d,di in GM.edges_iter(data=True)])
P.figure()
nx.draw_spectral(GMA)
nx.write_graphml(GMA,'ministro_ministro.graphml')
nx.write_gml(GMA,'ministro_ministro.gml')
nx.write_pajek(GMA,'ministro_ministro.pajek')
nx.write_dot(GMA,'ministro_ministro.dot')
return GMA
def cluster_graph( g, colors, current_color = 0 ):
# Initialize colors
degrees = []
for n in g.nodes( ):
degrees.append( (nx.degree(g, n ), n))
nodeWithMaxDegree = sorted( degrees, reverse = True )[0][1]
# Start with node with maximum degree
current_color += 1
colors[ nodeWithMaxDegree ] = current_color
numIteration = 0
pN = nodeWithMaxDegree
stack = [ nodeWithMaxDegree ]
while stack:
neighbours = nx.neighbors( g, stack.pop( ) )
numIteration += 1
for n in neighbours:
if colors[n] > 0:
continue
# If most neightbours of n are as close to pN as the value current
# iteration, then accept this node.
potentialCandidates = filter(lambda x: colors[x] == 0, nx.neighbors( g, n ))
# print( "Potential neighbours ", potentialCandidates )
distance2pN = [ nx.shortest_path_length( g, x, pN) for x in potentialCandidates ]
goodDist2pN = filter( lambda x: x <= numIteration, distance2pN )
accepted = False
if len( goodDist2pN ) > 0:
accepted = True
colors[ n ] = current_color
stack.append( n )
# print n, ' -> ', distance2pN, ',', goodDist2pN, 'Accepted', accepted
# print stack
return g
def RW_Size(G,r = 1000,m=100):
sampled = []
now_node = random.choice(G.nodes())
sampled.append(now_node)
while True:
next_node = random.choice(nx.neighbors(G,now_node))
now_node = next_node
sampled.append(now_node)
if len(sampled) >= r:
break
print(1)
lst = []
for i in range(0,r-m):
if i+m <= r-1:
for j in range(i+m,r):
# l1 = set(nx.neighbors(G,sampled[i]))
# l2 = set(nx.neighbors(G,sampled[j]))
# if len(list(l1 & l2)) >= 1:
lst.append((sampled[i],sampled[j]))
lst.append((sampled[j],sampled[i]))
sumA = 0.0
sumB = 0.0
print(len(lst))
for nodes in lst:
sumA += float(nx.degree(G,nodes[0]))/nx.degree(G,nodes[1])
l1 = set(nx.neighbors(G,nodes[0]))
l2 = set(nx.neighbors(G,nodes[1]))
count = len(list(l1&l2))
sumB += count/(float(nx.degree(G,nodes[0]))*nx.degree(G,nodes[1]))
return sumA/sumB
def expand(seed_set):
members = seed_set
print 'seed:', members, nx.subgraph(data_graph, set(
flatten(map(lambda mem: nx.neighbors(data_graph, mem), members))) | members).edges()
is_change = True
while is_change:
to_check_neighbors = list(flatten(map(lambda mem: nx.neighbors(data_graph, mem), members)))
random.shuffle(to_check_neighbors)
print to_check_neighbors
is_change = False
# for neighbor in to_check_neighbors:
for neighbor in to_check_neighbors:
if fitness(members | {neighbor}) > fitness(members):
is_change = True
members.add(neighbor)
fitness(members, is_print=True)
print 'add neighbor:', neighbor, members, 'w_in:', w_in, 'w_all:', w_all
break
for member in members:
if fitness(members - {member}) > fitness(members):
is_change = True
members.remove(member)
fitness(members, is_print=True)
print 'remove member:', member, members, 'w_in', w_in, 'w_all:', w_all
break
print set(members)
print '\n----------------------------\n'
def find_sidechains(molecule_graph):
# Identify chiral atoms
atoms = molecule_graph.atoms
chiral_centres = chir.get_chiral_sets(atoms)
# Identify sidechains (Ca-Cb-X), apart from proline and glycine.
sidechains = {}
# Detection of sidechains requires the multiple bonds be present in the atom graph.
chir.multi_bonds(atoms)
for k, v in chiral_centres.items():
carbons = [atom for atom in v if atom.element == "C"]
amides = [
carbon
for carbon in carbons
if any([type(nb) == chir.GhostAtom and nb.element == "O" for nb in nx.neighbors(atoms, carbon)])
and any([nb.element == "N" or nb.element == "O" for nb in nx.neighbors(atoms, carbon)])
]
nbs_n = [nb for nb in v if nb.element == "N"]
if amides and nbs_n:
amide_bond = (k, amides[0])
n_bond = (k, nbs_n[0])
h_bond = (k, [h for h in nx.neighbors(atoms, k) if h.element == "H"][0])
# Now find sidechains by cutting the Ca-C, Ca-N and Ca-H bonds
atoms.remove_edges_from([amide_bond, n_bond, h_bond])
sidechain_atoms = [
atom
for atom in [comp for comp in nx.connected_components(atoms) if k in comp][0]
if type(atom) != chir.GhostAtom
]
atoms.add_edges_from([amide_bond, n_bond, h_bond])
if not any([k in cycle for cycle in nx.cycle_basis(atoms.subgraph(sidechain_atoms))]):
sidechains[k] = atoms.subgraph(sidechain_atoms)
chir.remove_ghost_atoms(atoms)
return sidechains
def m_projection(graph_orig, members, prods, full_graph):
logging.info('Projecting the graph on members')
graph = graph_orig.subgraph(graph_orig.nodes())
#considering only favorable edges
graph.remove_edges_from([e for e in graph.edges(data=True) if e[2]['starRating'] < 4])
assert set(graph) == (set(members) | set(prods))
mg = nx.Graph()
mg.add_nodes_from(members)
prods_len = float(len(prods))
last_pctg = 0
prod_names = dict()
for p_i, p in enumerate(prods):
# first check whether two favorable reviews within a WINDOW is significant enough (p-value < 0.5)
ts = [e['date'] for e in full_graph[p].values()]
# In order for gkde to work, there should be more than one point value
if len(ts) >= MIN_TS_LEN and min(ts) < max(ts):
gkde = gaussian_kde(ts)
p_value, err = dblquad(lambda u, v: gkde(u)*gkde(v), min(ts) - WINDOW/2.0, max(ts) + WINDOW/2.0,
lambda v: v - WINDOW/2.0, lambda v: v + WINDOW/2.0)
if p_value - EPS >= SIGNF_LEVEL and err < EPS:
continue
for m1, m2 in itertools.combinations(nx.neighbors(graph, p), 2):
# order m1,m2 so the key (m1,m2) for prod_names works regardless of edge direction
if m1 > m2:
m1, m2 = m2, m1
#assert m1 in members and m2 in members
if abs(graph[p][m1]['date'] - graph[p][m2]['date']) < WINDOW:
if mg.has_edge(m1, m2):
c = mg[m1][m2]['weight']
else:
c = 0
prod_names[(m1, m2)] = []
prod_names[(m1, m2)].append(p)
mg.add_edge(m1, m2, weight=c + 1)
pctg = int(p_i/prods_len*100)
if pctg % 10 == 0 and pctg > last_pctg:
last_pctg = pctg
logging.info('%d%% Done' % pctg)
logging.debug('Normalizing edge weights: meet/max')
for e in mg.edges():
u, v = e
if mg[u][v]['weight'] <= 1:
mg.remove_edge(u, v)
del prod_names[(min(u, v), max(u, v))]
else:
norm = max(len(nx.neighbors(graph, u)), len(nx.neighbors(graph, v)))
mg.add_edge(u, v, weight=float(mg[u][v]['weight']) / norm, denom=norm)
# remove isolated nodes
degrees = mg.degree()
mg.remove_nodes_from([n for n in mg if degrees[n] == 0])
# adding original graph metadata on nodes
for m in mg:
mg.node[m] = graph_orig.node[m]
logging.debug(r'Projected Nodes = %d, Projected Edges = %d' % (mg.order(), len(mg.edges())))
return mg, prod_names
def printroute(self): for src in self.nodes.iterkeys(): print "[Neighors List] neighbor = %s" % (src) print nx.neighbors(self.graph, src) print "[Shortest Paths] - %s " % (src) for dst in self.nodes.iterkeys(): if src != dst: print nx.shortest_path(self.graph, src, dst)
def mindeg_GSK(BG, variables_index=0, verbose=False):
Vprime1 = [];
Vprime2 = [];
layer = nx.get_node_attributes(BG,'bipartite');
var = [x for x in BG.nodes() if layer[x] == variables_index]
fac = [x for x in BG.nodes() if layer[x] != variables_index]
if verbose==True:
print 'Initial variable nodes:', var;
print 'Initial factor nodes:', fac;
isolated_variables = [x for x in BG.nodes() if nx.degree(BG,x)==0 and layer[x]==variables_index];
[var.remove(x) for x in isolated_variables]
G = BG.copy();
Vprime1.extend(isolated_variables);
G.remove_nodes_from(isolated_variables)
isolated_factors = [x for x in G.nodes() if nx.degree(BG,x)==0 and layer[x]!=variables_index];
[fac.remove(x) for x in isolated_factors]
G.remove_nodes_from(isolated_factors);
while len(var)>0:
if verbose==True:
print '#var:',len(var),'#fac:', len(fac), '#nodes in depleted graph:', G.number_of_nodes(),'#original BG:',BG.number_of_nodes();
pendant = return_mindeg_pendant(G,layer,variables_index);
if len(pendant)==0:
## if not, choose randomly and do the game.
if verbose==True:
print var
m = G.number_of_nodes()*2;
degs = G.degree();
for e in G.edges():
if degs[e[0]] + degs[e[1]] < m:
m = degs[e[0]] + degs[e[1]];
v = e;
if e[0] in var:
v = e[0];
else:
v = e[1];
pendant = []
pendant.append(v);
pendant.extend(nx.neighbors(G,v));
Vprime2.append(pendant[0]);
else:
Vprime1.append(pendant[0]);
augmented_pendant = []
augmented_pendant.extend(pendant);
for n in pendant[1:]:
augmented_pendant.extend(nx.neighbors(G,n));
augmented_pendant = list(set(augmented_pendant));
G.remove_nodes_from(augmented_pendant);
[var.remove(x) for x in augmented_pendant if x in var];
[fac.remove(x) for x in augmented_pendant if x in fac];
return Vprime1,Vprime2;
def __repr__(self):
st = str(self.rootid)+'\n'
levels = nx.neighbors(self,self.rootid)
st = st + '---'+'\n'
for l in levels:
nw = len(nx.neighbors(self,l))
st = st + str(l)+' : '+ str(nw) + '\n'
return(st)
def explore(u, pre):
pre.append(u)
if len(nx.neighbors(G,u)) == 0:
Leafs[u]=set(pre)
return
for v in nx.neighbors(G, u):
explore(v, pre[:])
def __repr__(self):
st = str(self.rootid) + "\n"
levels = nx.neighbors(self, self.rootid)
st = st + "---" + "\n"
for l in levels:
nw = len(nx.neighbors(self, l))
st = st + str(l) + " : " + str(nw) + "\n"
return st
def Welsh_Powell(g,nome):
'''
Função: Resolver o sudoku, é gerado um arquivo com a resolução
a resolução também é mostrada no programa
Parametros: g, grafo de incompatibilidade do sudoku
Retorno: -
'''
#Todos os vértices tem o mesmo grau
#Atribui uma lista de possíveis "cores" para cada vértice
ci = []
for no_atual in range(81):
#verifica se o no não tem valor
if g.node[no_atual] == 0:
g.node[no_atual] = []
#Lista de vértices não resolvidos
ci.append(no_atual)
#recupera o valor que os vizinhos possuem
valores_vertice = [g.node[v] for v in nx.neighbors(g,no_atual)]
#Coloca como possível valor do no os valores que não estão presentes em seus
#vizinhos
for possivel_valor in range(1,10):
if possivel_valor not in valores_vertice:
g.node[no_atual].append(possivel_valor)
#Enquanto houver mais de um elemento por nó
while len(ci):
#Escolhe um no que não tem seu valor definido
for v in ci:
#Escolhe um no que tem só uma possibilidade
if len(g.node[v]) == 1:
no_retirado = g.node[v][0]
g.node[v] = g.node[v][0]
ci.remove(v)
#Remove o valor do no que tinha só uma possibilidade dos vizinhos
for i in nx.neighbors(g,v):
if i in ci and no_retirado in g.node[i]:
g.node[i].remove(no_retirado)
resposta = []
for i in range(81):
resposta.append(g.node[i])
gravar = int(raw_input('Para guardar a resposta em arquivo digite:\n1 - Sim\n2 - Não\n'))
#Grafa a resposta em arquivo
if gravar:
arq_resposta = open(nome,"w")
for i in range(81):
if (i+1) % 9 == 0:
arq_resposta.write(str(resposta[i])+'\n')
else:
arq_resposta.write(str(resposta[i])+" ")
arq_resposta.close()
print '\nResposta: '
#Mostra a resposta no console
for i in range(81):
print g.node[i],
if (i+1) % 9 == 0:
print
def mhrw_sampling(network, desired_order):
''' MHRV algorithm '''
# variables here
g = nx.Graph()
order = 0
go_more = True
# Try to get the first node that is not isolated
trycount = 0
found_node = False
while trycount < 10 and not found_node:
v = random.choice(network.nodes())
neighbors = nx.neighbors(network, v)
if not neighbors:
trycount += 1
else:
found_node = True
# if didnt find the node, just return
if not found_node:
return False, g, 0
# now, with the first node, we start our graph
g.add_node(v)
while order < desired_order and go_more:
# If don't find more neighboors, but almost have the order
neighbors = nx.neighbors(network, v)
if not neighbors:
if order < 0.9*desired_order:
return False, g, order
else:
return True, g, order
# If find neighboors keep going
for i in range(len(neighbors)):
g.add_edge(v, neighbors[i])
order_new = g.order()
# If we are too big now (more than 30%), lets try again
if order_new > 1.3*desired_order:
return False, g, order
# or If we reach the order we want
if order_new >= desired_order:
go_more = False
# If nothing happened, keep going...
v = random.choice(neighbors)
order = order_new
return True, g, order
def coefficient(node_i,node_j,G):
'''
paper : <<Defining and identifying communities in networks>>
'''
neighbors_i = set(nx.neighbors(G, node_i))
neighbors_j = set(nx.neighbors(G, node_j))
common = len(set(neighbors_i & neighbors_j))
min_k = min(len(neighbors_i),len(neighbors_j))-1
if(min_k == 0):
return 1
else:
return common / min_k
def run3(self,cs,ct,cutoff=1):
ns = nx.neighbors(self.L.Gt,cs)
nt = nx.neighbors(self.L.Gt,ct)
print ns
print nt
path=[]
for s in ns:
for t in nt:
p=nx.dijkstra_path(self.L.Gt,s,t)
if not cs in p and not ct in p:
path.append(p)
return path
def CC2(G,node):
n_list = nx.neighbors(G,node)
degree = len(n_list)
if degree <= 1:
return 0
tri = 0
count = 0
for i in range(0,degree-1):
n2_list = nx.neighbors(G,n_list[i])
for j in range(i+1,degree):
count += 1
if n_list[j] in n2_list:
tri += 1
return float(tri)/count
def updateNeighbors(s2,s1,L1,L2,P1,P2,G):
L1.append(s1)
L2.remove(s1)
L2.append(s2)
L1.remove(s2)
if not hasOutsideNeighbor(s1,P1,G) :
L1.remove(s1)
if not hasOutsideNeighbor(s2,P2,G) :
L2.remove(s2)
N1 = nx.neighbors(G,s1)
N2 = nx.neighbors(G,s2)
for node1 in N1 :
if node1 in P1:
#print "Nodes",node1,"and",s1,"in the same partition"
if hasOutsideNeighbor(node1,P1,G) :
#print "Node", node1, "has a neighbor outside from",P1
if node1 not in L1 :
L1.append(node1)
#print "L1 : ajout de", node1
else :
if node1 in L1 :
L1.remove(node1)
#print "L1 : suppression de", node1
else:
#print "Nodes",node1,"and",s1,"not in the same partition"
if not hasOutsideNeighbor(node1,P1,G) and node1 in L1:
L1.remove(node1)
#print "L1 : suppression de", node1
for node2 in N2 :
if node2 in P2 :
#print "Nodes",node2,"and",s2,"in the same partition"
if hasOutsideNeighbor(node2,P2,G) :
#print "Node", node2, "has a neighbor outside from",P2
if node2 not in L2 :
L2.append(node2)
#print "L2 : ajout de", node2
else :
if node2 in L2 :
L2.remove(node2)
#print "L2 : suppression de", node2
else:
#print "Nodes",node2,"and",s2,"not in the same partition"
if not hasOutsideNeighbor(node2,P2,G) and node2 in L2:
L2.remove(node2)
def approximate_solution(graph):
"""
Given a graph, construct a solution greedily using approximation methods.
"""
new_graph = nx.Graph()
degrees = nx.degree_centrality(graph)
largest = argmax(degrees)
new_graph.add_node(largest)
while new_graph.number_of_edges() < graph.number_of_nodes() - 1:
neighbor_list = [nx.neighbors(graph, n) for n in new_graph.nodes()]
neighbors = set()
for lst in neighbor_list:
neighbors = neighbors.union(lst)
if not neighbors:
return
next_largest = argmax_in(degrees, neighbors, exceptions = new_graph.nodes())
next_largest_list = [n for n in neighbors if (n not in new_graph.nodes()) and degrees[n] == degrees[next_largest]]
best_edge = None
best_score = 0
for n_largest in next_largest_list:
possible_edge_ends = [n for n in nx.neighbors(graph, n_largest)
if n in new_graph.nodes()]
new_graph.add_node(n_largest)
edge_end = argmax_in(degrees, possible_edge_ends)
new_graph.add_edge(edge_end, n_largest)
best_subscore = count_leaves(new_graph)
best_end = edge_end
new_graph.remove_edge(edge_end, n_largest)
for end in possible_edge_ends:
new_graph.add_edge(end, n_largest)
subscore = count_leaves(new_graph)
if subscore > best_subscore:
best_end = end
best_subscore = subscore
new_graph.remove_edge(end, n_largest)
new_graph.remove_node(n_largest)
if best_subscore > best_score:
best_edge = (n_largest, best_end)
best_score = best_subscore
new_graph.add_edge(best_edge[0], best_edge[1])
return new_graph
def basic_local_search(graph, solution):
original = solution.copy()
before = count_leaves(solution)
best_solution = solution.copy()
best_leaves = count_leaves(best_solution)
for i in range(10):
best = count_leaves(solution)
candidates = set(get_vertices_with_degree(solution, 2))
leaves = set(get_vertices_with_degree(solution, 1))
leaf_neighbors = []
for leaf in leaves:
leaf_neighbors.extend(nx.neighbors(solution, leaf))
leaf_neighbors = set(leaf_neighbors)
vs = candidates.intersection(leaf_neighbors)
for v in vs:
leafs = [l for l in nx.neighbors(solution, v) if l in leaves]
if leafs:
leaf = leafs[0]
else:
break
solution.remove_edge(v, leaf)
neighbors = nx.neighbors(graph, leaf)
for neighbor in neighbors:
solution.add_edge(leaf, neighbor)
new = count_leaves(solution)
if new > best:
best = new
else:
solution.remove_edge(leaf, neighbor)
if not nx.is_connected(solution):
solution.add_edge(v, leaf)
if count_leaves(solution) < best_leaves:
solution = best_solution.copy()
elif count_leaves(solution) > best_leaves:
best_solution = solution.copy()
best_leaves = count_leaves(best_solution)
after = count_leaves(solution)
if before > after:
solution = original.copy()
if before != after:
print 'before/after: ', before, after
if before > after:
raise Exception('you dun goofed')
if not nx.is_connected(solution):
raise Exception('you dun goofed')
return solution
def triaddist(graph):
t = {0:0, 1:0, 2:0, 3:0}
for i in graph.nodes():
for j in graph.nodes():
for k in graph.nodes():
x = 0
if i in nx.neighbors(graph, j):
x += 1
if i in nx.neighbors(graph, k):
x += 1
if j in nx.neighbors(graph, k):
x += 1
t[x] += 1
for q in t:
t[q] /= 6
return t
def test(rt):
global g
weight = nx.get_node_attributes(g,"weight")
#print "from test :" , weight
print rt
weights=weight.values()
node_words=weight.keys()
parent_node = rt
question_string = rt
neighbours_weights=dict()
prev=""
for i in range(20):
neighbours_weights={}
x=nx.neighbors(g,parent_node)
print x
print prev
try :
if i!=0:
x.remove(prev)
for node in x:
neighbours_weights[node] = weight[node]
prev=parent_node
parent_node = max(neighbours_weights)
print "Parent node is : ", parent_node
question_string = question_string + " " + parent_node
except Exception,e:
print str(e)
def findReachability(self, state, horizon):
""" Finds a reachable set on the graph.
Inputs:
state: starting point of reachability search
horizon: number of edges away from state to be searched.
Outputs: the set of all states that are reachable from state
in exactly horizon transitions.
"""
k = 0
prevSet = set()
prevSet.add(state)
nextSet = set()
while k < horizon:
nextSet.clear()
for node in prevSet:
nextSet = nextSet.union(set(nx.neighbors(self.graphRepresentation, node)))
if len(nextSet) == 1 and None in nextSet:
return None
if None in nextSet:
nextSet.remove(None)
prevSet = copy.deepcopy(nextSet)
k += 1
return nextSet
def install_neighbours(self):
"""
Install the neighbours information inside the Nodes classes.
"""
# Initialize neighbours sets as empty sets:
nodes_nei = [set() for _ in range(self.num_nodes)]
# Build translation tables between graph nodes
# and node numbers 1 .. self.num_nodes
self.graph_to_vec = {}
self.vec_to_graph = []
for i,gnd in enumerate(self.graph.nodes_iter()):
self.vec_to_graph.append(gnd)
self.graph_to_vec[gnd] = i
for i,nd in enumerate(self.nodes):
# Sample a set of indices (Which represent a set of nodes).
# Those nodes will be nd's neighbours:
gneighbours = nx.neighbors(self.graph,self.vec_to_graph[i])
nodes_nei[i].update(map(lambda gnei:\
self.graph_to_vec[gnei],gneighbours))
# Make sure that i is not his own neighbour:
assert i not in nodes_nei[i]
for i,nd in enumerate(self.nodes):
# Initialize a list of neighbours:
nd.set_neighbours(map(self.make_knode,list(nodes_nei[i])))
def compressGraph(graph):
""" compact the gateway nodes to one single node."""
""" Each node in the graph with ID < 0 is a 0.0.0.0/0 HNA route (a gateway
to the Internet). We compact them in one single node for easier analysis."""
newGraph = graph.copy()
if 0 in newGraph.nodes():
print "We use node id 0 for representing an abstract gateway node",\
"please do not use ID 0 in the graph definition"
sys.exit(1)
negNodes = []
negNeighs = []
for node in newGraph.nodes():
if node < 0:
negNodes.append(node)
for neighs in nx.neighbors(newGraph, node):
negNeighs.append(neighs)
if len(negNodes) == 0:
print "no gateway found for the network. Gateways are expected to ",\
"have an ID lower than zero"
newGraph.add_node(0)
for neigh in negNeighs:
newGraph.add_edge(0, neigh, weight=1)
for node in negNodes:
newGraph.remove_node(node)
return newGraph
def sync_label_propagation():
iter_num = 5
for node in nx.nodes(g):
g.node[node]['prev'] = node
g.node[node]['next'] = None
for i in xrange(iter_num):
for node in nx.nodes(g):
label_count_dict = {}
for neighbor in nx.neighbors(g, node):
if g.node[neighbor]['prev'] not in label_count_dict:
label_count_dict[g.node[neighbor]['prev']] = 0
label_count_dict[g.node[neighbor]['prev']] += 1
label_list_dict = reverse_dict(label_count_dict)
tie_list = label_list_dict[max(list(label_list_dict))]
# print label_count_dict
# print tie_list
g.node[node]['next'] = get_rand_element(tie_list)
for node in nx.nodes(g):
g.node[node]['prev'] = g.node[node]['next']
print_result(g, 'prev')
def get_new(graph,road):
"""
Gets a new network from the original synthetic distribution network by
swapping an edge with a minimum length reconnection. The created network is
rejected if power flow is not satisfied.
"""
prim_nodes = [n for n in graph if graph.nodes[n]['label']!='H']
reg_nodes = [n for n in graph if graph.nodes[n]['label']=='R']
prim_edges = [e for e in graph.edges() \
if graph[e[0]][e[1]]['label']!='S']
sub = [n for n in graph if graph.nodes[n]['label']=='S'][0]
# Reconstruct primary network to alter without modifying original
new_graph = graph.__class__()
new_graph.add_nodes_from(prim_nodes)
new_graph.add_edges_from(prim_edges)
# Get edgelist for random sampling and remove an edge
edgelist = [e for e in prim_edges if graph.nodes[e[0]]['label']=='T' \
and graph.nodes[e[1]]['label']=='T']
rand_edge = edgelist[np.random.choice(range(len(edgelist)))]
rem_geom = graph.edges[rand_edge]['geometry']
new_graph.remove_edge(*rand_edge)
# Analyze the two disconnected components
target = rand_edge[1] if nx.has_path(new_graph,sub,rand_edge[0]) else rand_edge[0]
comps = list(nx.connected_components(new_graph))
if sub in list(comps[0]):
not_connected_nodes = list(comps[1])
connected_nodes = list(comps[0])
else:
not_connected_nodes = list(comps[0])
connected_nodes = list(comps[1])
# Create a dummy road network
new_road = road.__class__()
new_road.add_nodes_from(road.nodes)
new_road.add_edges_from(road.edges)
for e in new_road.edges:
new_road.edges[e]['geometry'] = LineString([road.nodes[e[0]]['cord'],
road.nodes[e[1]]['cord']])
new_road.edges[e]['length'] = Link(new_road.edges[e]['geometry']).geod_length
# Delete the same edge/path from the dummy road network
path = [rand_edge[0],rand_edge[1]]
if len(rem_geom.coords)>2:
path_coords = list(rem_geom.coords)[1:-1]
for cord in path_coords:
neighbor_dist = {n: geodist(cord,road.nodes[n]['cord']) \
for n in nx.neighbors(road,path[-2])}
node_in_path = min(neighbor_dist,key=neighbor_dist.get)
path.insert(-1,node_in_path)
rem_road_edge = [(path[i],path[i+1]) for i,_ in enumerate(path[:-1])]
for edge in rem_road_edge:
new_road.remove_edge(*edge)
# Get edgeset
for n in not_connected_nodes:
circle = Point(graph.nodes[n]['cord']).buffer(0.01)
nearby_nodes = [m for m in connected_nodes \
if Point(graph.nodes[m]['cord']).within(circle)]
sys.exit(0)
# Get the set of edges between the disconnected components
# edge_set = []
# for e in new_road:
# if (e[0] in comps[0] and e[1] in comps[1]) or (e[0] in comps[1] and e[1] in comps[0]):
# dict_node = {n:graph.nodes[n]['cord'] for n in connected_nodes \
# if n!=end_node}
# center_node = graph.nodes[other_node]['cord']
# near_node = find_nearest_node(center_node,dict_node)
# new_edge = (near_node,other_node)
# new_graph.add_edge(*new_edge)
# create_network(new_graph,graph)
# print("Checking power flow result...")
powerflow(new_graph)
voltage = [new_graph.nodes[n]['voltage'] for n in new_graph \
if new_graph.nodes[n]['label']!='H']
low_voltage_nodes = [v for v in voltage if v<=0.87]
check = (len(low_voltage_nodes)/len(voltage))*100.0
if check>5.0:
print("Many nodes have low voltage. Percentage:",check)
return graph,0
else:
print("Acceptable power flow results. Percentage:",check)
return new_graph,1
def inducer(graph, node):
nebs = nx.neighbors(graph, node)
sub_nodes = nebs + [node]
sub_g = nx.subgraph(graph, sub_nodes)
out_counts = np.sum(map(lambda x: len(nx.neighbors(graph,x)), sub_nodes))
return sub_g, out_counts, nebs
def detect(self):
"""detect the source with GSBA.
Returns:
@rtype:int
the detected source
"""
'''
这是什么时候调用的？这是公式需要，对别的来说，就不是这个了。所有对于贪心是有两个
先验的，一个是要谣言中心性，一个是其他。
我们要加我们的就是加一个先验的，比如覆盖的操作，模仿其谣言定位方式，自己写一个
然后作为先验，放在先验中。
'''
self.reset_centrality()
self.prior_detector.set_data(self.data)
self.prior_detector.detect()
self.prior = nx.get_node_attributes(self.subgraph, 'centrality')
# print('先验检测器是什么？')
# print(self.prior)
# epa带权重的东西
self.reset_centrality()
epa_weight_object = epa2.EPA_center_weight()
epa_weight_object.set_data(self.data)
epa_weight_object.detect()
epa_weight_cnetralities = nx.get_node_attributes(self.subgraph, 'centrality')
# 覆盖率中心
self.reset_centrality()
cc_object = cc.CoverageCenter()
cc_object.set_data(self.data)
cc_object.detect()
coverage_centralities = nx.get_node_attributes(self.subgraph, 'centrality')
self.reset_centrality()
infected_nodes = set(self.subgraph.nodes())
n = len(infected_nodes)
epa_coverage={}
for node in infected_nodes:
epa_coverage[node] = decimal.Decimal(coverage_centralities[node]*epa_weight_cnetralities[node])
nx.set_node_attributes(self.subgraph,'centrality',epa_coverage)
result= self.sort_nodes_by_centrality()
print('result')
high_value =[x[0] for x in result]
new_subgraph =nx.Graph()
new_subgraph= self.data.graph.subgraph(high_value[0:40])
new_infect_nodes = new_subgraph.nodes()
self.reset_centrality()
posterior = {}
included = set()
neighbours = set()
weights = self.data.weights
for v in new_infect_nodes:
"""find the approximate upper bound by greedy searching"""
included.clear()
neighbours.clear()
included.add(v)
neighbours.add(v)
likelihood = 1
w = {} # effective propagation probabilities: node->w
w_key_sorted = blist()
w[v] = 1
w_key_sorted.append(v)
while len(included) < n and len(w_key_sorted)>1:
# print('邻居用来计算所谓的neighbours')
# print(neighbours)
w_sum = sum([w[j] for j in neighbours])
u = w_key_sorted.pop() # pop out the last element from w_key_sorted with the largest w
likelihood *= w[u] / w_sum
# print('分母是？')
# print(w_sum)
# print('likelihood')
# print(likelihood)
included.add(u)
neighbours.remove(u)
new = nx.neighbors(new_subgraph, u)
# print('new也就是在总图中的邻居')
# print(new)
for h in new:
# print('遍历到某个邻居')
# print(h)
if h in included:
continue
neighbours.add(h)
# compute w for h
w_h2u = weights[self.data.node2index[u], self.data.node2index[h]]
# w_h2u = weights[self.data.node2index[u]][self.data.node2index[h]]
if h in w.keys():
# print('------')
# print(w[h])
# print(w_h2u)
w[h] = 1 - (1 - w[h]) * (1 - w_h2u)
# print('w[h]，，，，h在keys')
# print(w[h])
else:
# print('h不在keys')
w[h] = w_h2u
# print(w[h])
# print('w是什么')
# print(w)
# h_neighbor = nx.neighbors(self.data.graph, h)
# w_h = 1
# for be in included.intersection(h_neighbor):
# w_h *= 1 - self.data.get_weight(h, be)
# w[h] = 1 - w_h
"""insert h into w_key_sorted, ranking by w from small to large"""
if h in infected_nodes:
# print('开始排序了')
if h in w_key_sorted:
w_key_sorted.remove(h) # remove the old w[h]
k = 0
while k < len(w_key_sorted):
if w[w_key_sorted[k]] > w[h]:
break
k += 1
# print(w_key_sorted)
w_key_sorted.insert(k, h) # 安排降序加入，就是排列可能性加入，安排顺序插入进去
# print('w_key_sorted')
# print(w_key_sorted)
# w_key_sorted[k:k] = [h]
# print('每次开始的是那个节点呢？')
# print(v)
# print('每一个的可能性是likehood')
# print(likelihood)
posterior[v] = (decimal.Decimal(self.prior[v]) * decimal.Decimal(likelihood) * self.prior[v])
nx.set_node_attributes(self.subgraph, 'centrality', posterior)
return self.sort_nodes_by_centrality()
def algo9(G):
T = nx.Graph()
n = len(G)
B = nx.Graph()
# Add nodes with the node attribute "bipartite"
B.add_nodes_from(G.nodes)
for node in G.nodes():
tmp = n + node
B.add_node(tmp)
for a in G.nodes():
for b in nx.neighbors(G, a):
# print(G[a][b]['weight'])
B.add_edge(a, n + b, weight=G[a][b]['weight'])
weightOfNodes = nodesWeight(B, n)
currentNode = weightOfNodes[0][0]
T.add_node(currentNode)
B_prime = B.copy()
for node in nx.neighbors(B_prime, currentNode):
B.remove_node(node)
B.remove_node(currentNode)
print(B.edges, 1)
i = 1
while len(set(B.nodes) & set(range(n, 2 * n))) != 0:
candidate = set()
for node in T.nodes():
candidate = candidate | set(nx.neighbors(G, node))
candidate -= T.nodes()
# print(candidate, 'candidate')
for i in weightOfNodes:
if i[0] in list(candidate):
currentNode = i[0]
break
# print(currentNode, 'currentNode')
shortest = float('inf')
shortestNode = None
for j in T.nodes:
if ((currentNode, j)
in G.edges) and (G[currentNode][j]['weight'] < shortest):
shortest = G[currentNode][j]['weight']
shortestNode = j
# print(currentNode, shortestNode, G[currentNode][shortestNode]['weight'])
T.add_edge(currentNode,
shortestNode,
weight=G[currentNode][shortestNode]['weight'])
# currentNode = weightOfNodes[i][0]
T.add_node(currentNode)
B_prime = B.copy()
for node in nx.neighbors(B_prime, currentNode):
B.remove_node(node)
B.remove_node(currentNode)
return T
def khren2(G):
result_s = {}
result_d = {}
passed_set = []
list_neighbrs = {}
for v in G.nodes:
list_neighbrs.update({v: set(nx.neighbors(G, v))})
for u in G.nodes:
passed_set.append(u)
for v in nx.non_neighbors(G, u):
if not v in passed_set:
cmn_nmbr = list_neighbrs[u] & list_neighbrs[v]
# dist = nx.shortest_path_length(G,u,v)
# if dist == 2:
# cmn_nmbr = G.distance(u,v)
if G.nodes[u]["ground_label"] == G.nodes[v]['ground_label']:
result_s.update({(u, v): cmn_nmbr})
else:
result_d.update({(u, v): cmn_nmbr})
# max_s = max(len(result_s.values()))
max_s = len(max(result_s.values(), key=len))
max_d = len(max(result_d.values(), key=len))
print(max_s, max_d)
potential = 0
potential_set = set()
result_s = {key: val for key, val in result_s.items() if len(val) > max_d}
G_s = G.subgraph(list(G.nodes))
edges = list(G_s.edges())
G_s.remove_edges_from(edges)
for (u, v) in result_s:
G_s.add_edge(u, v)
print(G_s.number_of_edges())
print(nx.number_connected_components(G_s))
fig, ax1 = plt.subplots(1, 1, sharey=True, figsize=(14, 7))
pos = nx.spring_layout(G_s)
nx.draw(G_s,
pos,
ax1,
with_labels=False,
node_color='black',
node_size=20,
width=1)
plt.show()
plt.close()
# ground_colors = [G_s.nodes[node]["ground_label"] for node in self.nodes
for pair in result_s:
potential += 1
potential_set = potential_set | result_s[pair]
print("Potential pairs = %d" % potential)
print("Potential vertices = %d" % len(potential_set))
for (pair, vertex_list) in result_s.items():
if len(vertex_list) == max_s:
max_pair = pair
break
nx.set_node_attributes(G, {max_pair[0]: 0}, "label")
nx.set_node_attributes(G, {max_pair[1]: 0}, "label")
marked_nmbr = 0
marked_vertices = {max_pair[0], max_pair[1]}
passed_pairs = set()
# print(result_s[max_pair])
it = 0
prev_len = 0
while len(marked_vertices) < 500 and len(marked_vertices) > marked_nmbr:
marked_nmbr = len(marked_vertices)
marked_list = list(marked_vertices)
marked_list.reverse()
print(marked_list)
for marked_pair in itertools.combinations(marked_list, 2):
if marked_pair[0] > marked_pair[1]:
rev_marked_pair = (marked_pair[1], marked_pair[0])
else:
rev_marked_pair = marked_pair
if rev_marked_pair in result_s:
for pair in result_s:
if len(result_s[pair]) > max_d:
if len(result_s[pair]
& result_s[rev_marked_pair]) > 0 or len(
[pair[0]]):
pred_labels = dict(
zip(list(result_s[pair]),
[0 for i in result_s[pair]]))
nx.set_node_attributes(G, pred_labels, "label")
marked_vertices.update(result_s[pair])
marked_vertices.update([pair[0], pair[1]])
if len(marked_vertices) > prev_len:
print(len(marked_vertices))
prev_len = len(marked_vertices)
if len(marked_vertices) >= 500:
break
if len(marked_vertices) >= 500:
break
print("iteration = %d" % it)
it += 1
print(len(marked_vertices))
one_pred = list(set(G.nodes) - marked_vertices)
pred_labels = dict(zip(one_pred, [1 for i in one_pred]))
nx.set_node_attributes(G, pred_labels, "label")
prediction = [v for v in nx.get_node_attributes(G, 'label').values()]
# print([G.nodes[node]['ground_label'] for node in G.nodes if node not in marked_vertices])
# print([G.nodes[node]['label'] for node in G.nodes if node not in marked_vertices])
print(max_1(accuracy_score(G.ground_labels, prediction)))
print(it)
return (result_s, result_d)
def get_orings(atoms, index, possible):
'''
atoms: ASE atoms object of the zeolite framework to be analyzed
index: (integer) index of the atom that you want to classify
possible: (list) of the types of rings known to be present in the zeolite
framework you are studying. This information is available on IZA
or in the collections module of this package.
Returns: Class - The size of rings associated with the oxygen.
paths - The actual atom indices that compose those rings.
'''
cell = atoms.get_cell_lengths_and_angles()[:3]
repeat = []
possible = possible * 2
maxring = max(possible)
for i, c in enumerate(cell):
if c / 2 < maxring / 2 + 5:
l = c
re = 1
while l / 2 < maxring / 2 + 5:
re += 1
l = c * re
repeat.append(re)
else:
repeat.append(1)
atoms2 = atoms.copy()
atoms2 = atoms2.repeat(repeat)
center = atoms2.get_center_of_mass()
trans = center - atoms2.positions[index]
atoms2.translate(trans)
atoms2.wrap()
cutoff = neighborlist.natural_cutoffs(atoms2, mult=1.05)
nl = neighborlist.NeighborList(cutoffs=cutoff,
self_interaction=False,
bothways=True)
nl.update(atoms2)
matrix = nl.get_connectivity_matrix(sparse=False)
m = matrix.copy()
G = nx.from_numpy_matrix(matrix)
neighbs = nx.neighbors(G, index)
for n in neighbs:
if atoms2[n].symbol != 'O':
fe = [n]
fe.append(index)
G.remove_edge(fe[0], fe[1])
tmpClass = []
rings = []
while len(tmpClass) < 6:
try:
path = nx.shortest_path(G, fe[0], fe[1])
except:
break
length = len(path)
if length in possible:
tmpClass.append(int(len(path) / 2))
rings.append(path)
if length == 18:
G.remove_edge(path[8], path[9])
elif length < 16 and length > 6:
G.remove_edge(path[3], path[4])
elif length >= 16:
G.remove_edge(path[int(len(path) / 2 - 1)],
path[int(len(path) / 2)])
if length == 8:
G.remove_node(path[4])
if length == 6:
G.remove_node(path[3])
else:
G.remove_edge(path[int(length / 2)], path[int(length / 2 + 1)])
rings = remove_dups(rings)
rings = remove_sec(rings)
Class = []
for r in rings:
Class.append(int(len(r) / 2))
paths = rings
paths = [x for _, x in sorted(zip(Class, paths), reverse=True)]
Class.sort(reverse=True)
keepers = []
for i in paths:
for j in i:
if j not in keepers:
keepers.append(j)
d = [atom.index for atom in atoms2 if atom.index not in keepers]
del atoms2[d]
return Class, paths, atoms2
def MI(graph_file):
G = nx.read_edgelist(graph_file)
node_num = nx.number_of_nodes(G)
edge_num = nx.number_of_edges(G)
print(node_num)
print(edge_num)
sim_dict = {} # �洢���ƶȵ��ֵ�
i = 0
I_pConnect_dict = {}
edges = nx.edges(G)
ebunch = nx.non_edges(G)
for u, v in edges:
uDegree = nx.degree(G, u)
vDegree = nx.degree(G, v)
pConnect = 1 - (comb(
(edge_num - uDegree), vDegree)) / (comb(edge_num, vDegree))
I_pConnect = -math.log2(pConnect)
I_pConnect_dict[(u, v)] = I_pConnect
I_pConnect_dict[(v, u)] = I_pConnect
for u, v in ebunch:
uDegree = nx.degree(G, u)
vDegree = nx.degree(G, v)
pConnect = 1 - (comb(
(edge_num - uDegree), vDegree)) / (comb(edge_num, vDegree))
I_pConnect = -math.log2(pConnect)
I_pConnect_dict[(u, v)] = I_pConnect
I_pConnect_dict[(v, u)] = I_pConnect
ebunchs = nx.non_edges(G)
i = 0
for u, v in ebunchs:
pMutual_Information = 0
I_pConnect = I_pConnect_dict[(u, v)]
for z in nx.common_neighbors(G, u, v):
neighbor_num = len(list(nx.neighbors(G, z)))
neighbor_list = nx.neighbors(G, z)
for m in range(len(neighbor_list)):
for n in range(m + 1, len(neighbor_list)):
if m != n:
I_ppConnect = I_pConnect_dict[(neighbor_list[m],
neighbor_list[n])]
if nx.clustering(G, z) == 0:
pMutual_Information = pMutual_Information + (
2 /
(neighbor_num *
(neighbor_num - 1))) * ((I_ppConnect) -
(-math.log2(0.0001)))
else:
pMutual_Information = pMutual_Information + (
2 / (neighbor_num * (neighbor_num - 1))) * (
(I_ppConnect) -
(-math.log2(nx.clustering(G, z))))
sim_dict[(u, v)] = -(I_pConnect - pMutual_Information)
i = i + 1
# =============================================================================
# print(i)
# print(str(u) + "," + str(v))
# print (sim_dict[(u, v)])
# =============================================================================
print(sim_dict)
return sim_dict
def neighbors(self,state):
return nx.neighbors(self.graph,state)
def __overlapping_label_propagation(self,
ego_minus_ego,
ego,
max_iteration=100):
"""
:param max_iteration: number of desired iteration for the label propagation
:param ego_minus_ego: ego network minus its center
:param ego: ego network center
"""
t = 0
old_node_to_coms = {}
while t < max_iteration:
t += 1
label_freq = {}
node_to_coms = {}
nodes = nx.nodes(ego_minus_ego)
random.shuffle(nodes)
count = -len(nodes)
for n in nodes:
n_neighbors = nx.neighbors(ego_minus_ego, n)
if count == 0:
t += 1
#compute the frequency of the labels
for nn in n_neighbors:
communities_nn = [nn]
if nn in old_node_to_coms:
communities_nn = old_node_to_coms[nn]
for nn_c in communities_nn:
if nn_c in label_freq:
v = label_freq.get(nn_c)
#case of weighted graph
if self.weighted:
label_freq[nn_c] = v + ego_minus_ego.edge[nn][
n]['weight']
else:
label_freq[nn_c] = v + 1
else:
#case of weighted graph
if self.weighted:
label_freq[nn_c] = ego_minus_ego.edge[nn][n][
'weight']
else:
label_freq[nn_c] = 1
#first run, random choosing of the communities among the neighbors labels
if t == 1:
if not len(n_neighbors) == 0:
r_label = random.sample(label_freq.keys(), 1)
ego_minus_ego.node[n]['communities'] = r_label
old_node_to_coms[n] = r_label
count += 1
continue
#choose the majority
else:
labels = []
max_freq = -1
for l, c in label_freq.items():
if c > max_freq:
max_freq = c
labels = [l]
elif c == max_freq:
labels.append(l)
node_to_coms[n] = labels
if not n in old_node_to_coms or not set(
node_to_coms[n]) == set(old_node_to_coms[n]):
old_node_to_coms[n] = node_to_coms[n]
ego_minus_ego.node[n]['communities'] = labels
t += 1
#build the communities reintroducing the ego
community_to_nodes = {}
for n in nx.nodes(ego_minus_ego):
if len(nx.neighbors(ego_minus_ego, n)) == 0:
ego_minus_ego.node[n]['communities'] = [n]
c_n = ego_minus_ego.node[n]['communities']
for c in c_n:
if c in community_to_nodes:
com = community_to_nodes.get(c)
com.append(n)
else:
nodes = [n, ego]
community_to_nodes[c] = nodes
return community_to_nodes
def aa_seq(self, order="dfs", train=True):
mol_atoms_heavy = [a for a in self.atoms if a.type.mass >= 2.0]
atom_seq_dict_heavy = {}
atom_seq_dict_hydrogens = {}
atom_predecessors_dict = {}
cg_seq = self.cg_seq(order=order, train=train)
for bead, predecessor_beads in cg_seq:
bead_atoms = bead.atoms
heavy_atoms = [a for a in bead_atoms if a.type.mass >= 2.0]
hydrogens = [a for a in bead_atoms if a.type.mass < 2.0]
predecessor_atoms = list(itertools.chain.from_iterable([b.atoms for b in set(predecessor_beads)]))
predecessor_atoms_heavy = [a for a in predecessor_atoms if a.type.mass >= 2.0]
predecessor_atoms_hydrogens = [a for a in predecessor_atoms if a.type.mass < 2.0]
#find start atom
psble_start_nodes = []
n_heavy_neighbors = []
for a in heavy_atoms:
n_heavy_neighbors.append(len(list(nx.all_neighbors(self.G_heavy, a))))
for n in nx.all_neighbors(self.G_heavy, a):
if n in predecessor_atoms_heavy:
psble_start_nodes.append(a)
if psble_start_nodes:
#start_atom = np.random.choice(psble_start_nodes)
#weird bonds in cg sPS... therefore just take first one...
start_atom = psble_start_nodes[0]
else:
start_atom = heavy_atoms[np.array(n_heavy_neighbors).argmin()]
#else:
# start_atom = heavy_atoms[0]
#sequence through atoms of bead
if order == "bfs":
edges = list(nx.bfs_edges(self.G.subgraph(heavy_atoms), start_atom))
atom_seq = [start_atom] + [e[1] for e in edges]
elif order == "random":
atom_seq = [start_atom]
pool = []
for n in range(1, len(heavy_atoms)):
pool += list(nx.neighbors(self.G.subgraph(heavy_atoms), atom_seq[-1]))
pool = list(set(pool))
next = np.random.choice(pool)
while next in atom_seq:
next = np.random.choice(pool)
pool.remove(next)
atom_seq.append(next)
else:
atom_seq = list(nx.dfs_preorder_nodes(self.G.subgraph(heavy_atoms), start_atom))
#hydrogens = self.hydrogens[:]
np.random.shuffle(hydrogens)
#atom_seq = atom_seq + hydrogens
#atom_seq = []
for n in range(0, len(atom_seq)):
atom_predecessors_dict[atom_seq[n]] = predecessor_atoms_heavy + atom_seq[:n]
for n in range(0, len(hydrogens)):
atom_predecessors_dict[hydrogens[n]] = mol_atoms_heavy + predecessor_atoms_hydrogens + hydrogens[:n]
atom_seq_dict_heavy[bead] = atom_seq
atom_seq_dict_hydrogens[bead] = hydrogens
return cg_seq, atom_seq_dict_heavy, atom_seq_dict_hydrogens, atom_predecessors_dict
def FindNeighbors(G, node):
tmp = list(nx.neighbors(G, str(node)))
return tmp
def get_orings_new(atoms, index, possible):
cell = atoms.get_cell_lengths_and_angles()[:3]
repeat = []
possible = possible * 2
maxring = max(possible)
for i, c in enumerate(cell):
if c / 2 < maxring / 2 + 5:
l = c
re = 1
while l / 2 < maxring / 2 + 5:
re += 1
l = c * re
repeat.append(re)
else:
repeat.append(1)
atoms2 = atoms.copy()
atoms2 = atoms2.repeat(repeat)
center = atoms2.get_center_of_mass()
trans = center - atoms2.positions[index]
atoms2.translate(trans)
atoms2.wrap()
atoms3 = atoms2.copy()
cutoff = neighborlist.natural_cutoffs(atoms2, mult=1.05)
nl = neighborlist.NeighborList(cutoffs=cutoff,
self_interaction=False,
bothways=True)
nl.update(atoms2)
matrix = nl.get_connectivity_matrix(sparse=False)
m = matrix.copy()
G = nx.from_numpy_matrix(matrix)
neighbs = nx.neighbors(G, index)
fe = []
for n in neighbs:
if atoms2[n].symbol != 'O':
fe.append(n)
fe.append(index)
rings = []
for path in nx.all_simple_paths(G, index, fe[0], cutoff=max(possible) - 1):
rings.append(path)
new_rings = []
for r in rings:
if len(r) in possible:
new_rings.append(r)
rings = new_rings
delete = []
for j, r in enumerate(rings):
flag = False
if len(r) >= 12:
for i in range(1, len(r) - 3, 2):
angle = atoms3.get_angle(r[i], r[i + 2], r[i + 4], mic=True)
if angle < 100:
delete.append(j)
break
new_rings = []
for j, r in enumerate(rings):
if j not in delete:
new_rings.append(r)
rings = new_rings
rings = remove_sec(rings)
rings = remove_dups(rings)
Class = []
for r in rings:
Class.append(int(len(r) / 2))
paths = rings
paths = [x for _, x in sorted(zip(Class, paths), reverse=True)]
Class.sort(reverse=True)
keepers = []
for i in paths:
for j in i:
if j not in keepers:
keepers.append(j)
d = [atom.index for atom in atoms2 if atom.index not in keepers]
del atoms2[d]
return Class, paths, atoms2
def generate_subgraph_biased_random_walk(id=0):
path = '/network/rit/lab/ceashpc/share_data/GraphOpt/datasets/epinions'
fn = 'graph.pkl'
with open(os.path.join(path, fn), 'rb') as rfile:
graph = pickle.load(rfile)
print(graph.number_of_nodes())
print(graph.number_of_edges())
print(len([1 for (u, v) in graph.edges() if u in graph[v]]))
undigraph = graph.to_undirected() # directed graph to undirected graph
print(undigraph.number_of_nodes())
print(undigraph.number_of_edges())
print(nx.is_connected(undigraph))
path = '/network/rit/lab/ceashpc/share_data/GraphOpt/datasets/epinions/dcs_test'
fn = '03EdgesC.txt'
correlations = {} # edge weight of conceptual network
with open(os.path.join(path, fn)) as rfile:
for line in rfile:
terms = line.strip().split(' ')
node_1, node_2, weight = int(terms[0]), int(terms[1]), float(
terms[2])
correlations[(node_1, node_2)] = weight
num_nodes = undigraph.number_of_nodes()
node_degree = np.zeros(num_nodes)
for current_node in undigraph.nodes():
sum_weight = 0.
for node in nx.neighbors(undigraph, current_node):
pair = tuple(sorted(list((node, current_node))))
weight = correlations[pair] if pair in correlations else 0.
sum_weight += weight
node_degree[current_node] = sum_weight
# random walk
start_node = next_node = np.random.choice(range(num_nodes))
subgraph = set()
subgraph.add(start_node)
restart = 0.1
count = 1000
print(start_node)
# random walk on undirected physical graph, biased for nodes with higher degree on conceptual network
while True:
if len(subgraph) >= count:
break
neighbors = [node for node in nx.neighbors(undigraph, next_node)]
neighbor_degree_dist = [node_degree[node] for node in neighbors]
sum_prob = np.sum(neighbor_degree_dist)
# note, when there are no neighbors for one node on conceptual network, its probabilities to other neighbor nodes are equal
normalized_prob_dist = [
prob / sum_prob if not sum_prob == 0. else 1. / len(neighbors)
for prob in neighbor_degree_dist
]
# if sum_prob == 0.:
# print(len(neighbors))
# print(neighbor_degree_dist)
# print(sum_prob)
# print(normalized_prob_dist)
# break
# print(len(neighbor_degree_dist))
# print(normalized_prob_dist)
if np.random.uniform() > restart:
next_node = np.random.choice(
neighbors, p=normalized_prob_dist
) # biased for those nodes with high degree
else: # restart
next_node = start_node
subgraph.add(next_node)
print(len(subgraph))
if len(subgraph) < count:
print('generation fails')
return
mean_1 = 5.
mean_2 = 0.
std = 1.
attributes = np.zeros(graph.number_of_nodes())
for node in graph.nodes():
if node in subgraph:
attributes[node] = np.random.normal(mean_1, std)
else:
attributes[node] = np.random.normal(mean_2, std)
path = '/network/rit/lab/ceashpc/share_data/GraphOpt/datasets/epinions/syn'
fn = 'attributes_biased_{}.pkl'.format(id)
with open(os.path.join(path, fn), 'wb') as wfile:
pickle.dump({'attributes': attributes, 'subgraph': subgraph}, wfile)
while len(list(set(D) - set(F))) != 0:
min = 9999
for i in set(D) - set(F):
if degree[i] < min:
u = i
min = degree[i]
uu = []
uu.append(u)
g = G.subgraph(set(D) - set(uu))
n = len(list(nx.connected_components(g)))
if n != 1:
F = set(F) | set(uu)
else:
D = set(D) - set(uu)
for s in set(D) & set(list(nx.neighbors(G, u))):
degree[s] = degree[s] - 1
if len(list(set(list(nx.neighbors(G, u))) & set(F))) == 0:
max = 0
for i in list(nx.neighbors(G, u)):
if degree[i] > max:
w = i
max = degree[i]
ww = []
ww.append(w)
F = set(F) | set(ww)
print(D)
print(F)
print(set(D) - set(F))
print('\n')
print(D)
def neighbors(G, v):
return list(nx.neighbors(G, v))
from networkx.algorithms.community import label_propagation_communities
from networkx.algorithms.community import asyn_fluidc
from networkx.algorithms.community.quality import coverage
from networkx.algorithms.community.quality import performance
from networkx.algorithms.community.centrality import girvan_newman
# preparing data
g = nx.read_gml('datasets/dolphins.gml', label='id')
# g=nx.karate_club_graph()
# g=nx.fast_gnp_random_graph(8,0.7)
# g=nx.windmill_graph(8,4)
N = len(g)
W = np.zeros((N, N))
for i in g:
print(i, end="-> ")
for j in nx.neighbors(g, i):
print(j, end=" ")
W[i][j] = 1
W[j][i] = 1
print()
# networkx community detection
gmc = list(greedy_modularity_communities(g))
alc = list(asyn_lpa_communities(g))
lpac = list(label_propagation_communities(g))
asfl = list(asyn_fluidc(g, 3))
# inititalization
anchorList = set([])
U = {}
def greedyDP(G, i, k): #doesn't consider subtrees
#This is different since we are considering each node's weight in the graph to be the number of accepting nodes in a given cluster
#i = number_of_nodes(G)
#k = number of seeds
storePayoff = [[0] * i for _ in range(k)] #store payoff
storeSeeds = [[[]] * i for _ in range(k)] #store seeds at each stage
tree = nx.bfs_tree(G, 1)
for numSeeds in range(0, k): #bottom up DP
nodes = list(reversed(list(
(nx.topological_sort(tree)
)))) #look at nodes in reverse topological order
for j in range(0, i):
if j == 0 and numSeeds == 0: #first entry
#breakpoint()
storeSeeds[numSeeds][j] = [nodes[j]]
nodeWeight = computeNegPayoff(G, nodes[j])
storePayoff[numSeeds][j] = nodeWeight
#print("first entry,", storePayoff)
elif numSeeds == 0: #if there is only one seed to consider, aka first row
last = storePayoff[numSeeds][j - 1]
nodeWeight = computeNegPayoff(G, nodes[j])
if nodeWeight > last:
storePayoff[numSeeds][j] = nodeWeight
storeSeeds[numSeeds][j] = [nodes[j]]
else:
storePayoff[numSeeds][j] = last
table = storeSeeds[numSeeds][j - 1]
table2 = table[:]
storeSeeds[numSeeds][j] = table2
#print("num seeds 0",storePayoff)
elif j == 0: #we only consider first node, so its simple
storePayoff[numSeeds][j] = storePayoff[numSeeds - 1][j]
storeSeeds[numSeeds][j] = storeSeeds[numSeeds - 1][j][:]
else: #where DP comes in
last = storePayoff[numSeeds - 1][j - 1] #diagonal-up entry
nextGuess = computeNegPayoff(G, nodes[j]) + last
for lastNodes in storeSeeds[numSeeds - 1][
j - 1]: #dont want to double count edges!
neighbors = nx.neighbors(G, lastNodes)
for neighbor in neighbors:
if neighbor == nodes[j]:
add = G.get_edge_data(
lastNodes, nodes[j]
) #neighbor of new node is current node
add = add['weight']
nextGuess += add
lastEntry = storePayoff[numSeeds][j - 1] #left entry
lastEntryUp = storePayoff[numSeeds - 1][j]
tup = [(storeSeeds[numSeeds][j - 1], lastEntry),
(storeSeeds[numSeeds - 1][j], lastEntryUp),
(storeSeeds[numSeeds - 1][j - 1], nextGuess),
(storeSeeds[numSeeds - 1][j - 1], last)]
tup.sort(key=lambda x: x[1])
nextList = tup[-1][0][:]
storeSeeds[numSeeds][j] = nextList
storePayoff[numSeeds][j] = tup[-1][1]
if tup[-1][0] == storeSeeds[numSeeds - 1][j - 1]:
storeSeeds[numSeeds][j].append(nodes[j])
f = open("make_matrix.txt", "a")
f.write("\n regular DP payoff: " + str(storePayoff))
f.write("\n with seeds: " + str(storeSeeds))
maxVal = storePayoff[k - 1][i - 1]
for j in range(0, k):
if storePayoff[j][i - 1] > maxVal:
maxVal = storePayoff[j][i - 1]
return (maxVal, storeSeeds[j][i - 1])
import networkx as nx
import operator
import pandas as pd
import numpy as np
if __name__ == "__main__":
G = nx.read_gpickle(
"/home/kapxy/networkanalysis/OverflowNA/data/Users_comments_nanremoved_noselfloops.pkl"
)
print(len(G.nodes))
centralities = nx.degree_centrality(G)
max_centrality = max(centralities.items(), key=operator.itemgetter(1))[0]
print(nx.degree(G, max_centrality))
neighbors = list(nx.neighbors(G, max_centrality))
neighbors_of_neighbors = {max_centrality: neighbors}
for neighbor in neighbors:
neighbors_of_neighbors[neighbor] = list(nx.neighbors(G, neighbor))
#print(neighbors_of_neighbors)
thonk = np.array([
y for x in [[(k, target) for target in v]
for k, v in neighbors_of_neighbors.items()] for y in x
])
print(thonk[14])
df = pd.DataFrame(np.array(thonk), columns=["Source", "Target"])
df.to_csv("data/two_step_neighbors_from_max_degree_centrality.csv",
index=False)
# nx.write_edgelist(max_conn, path="data/max_conn_edgelist.csv", delimiter=",", data=False)
def WMI(G):
#G = nx.read_edgelist(graph_file)
edges = nx.edges(G)
nodes = nx.nodes(G)
beta = -math.log2(0.0001)
sim_dict = {}
# 得到图中所有边的权值之和
all_weight = 0
for u, v in edges:
all_weight = all_weight + G.get_edge_data(u, v)['weight']
print(all_weight)
# 计算图中不同‘点权值’的点之间相连的互信息
nodes_Weight_dict = {}
weight_list = []
# 得到每个点的“点权值”
for v in nodes:
node_weight = 0
v_neighbors = nx.neighbors(G, v)
for u in v_neighbors:
node_weight += G.get_edge_data(u, v)['weight']
weight_list.append(node_weight)
nodes_Weight_dict[v] = node_weight
#print(weight_list)
#print(nodes_Weight_dict)
distinct_weight_list = list(set(weight_list))
#print(distinct_weight_list)
size = len(distinct_weight_list)
#print(size)
self_Connect_dict = {}
#得到不同‘点权值’的点之间相连的互信息
for x in range(size):
w_x = distinct_weight_list[x]
for y in range(x, size):
w_y = distinct_weight_list[y]
p0 = 1
(w_n, w_m) = pair(w_x, w_y)
a = all_weight + 1
b = all_weight - w_m + 1
for i in range(1, int(w_n + 1)):
p0 *= (b - i) / (a - i)
if p0 == 1:
self_Connect_dict[(w_n, w_m)] = beta
#self_Connect_dict[(w_m, w_n)] = beta
else:
self_Connect_dict[(w_n, w_m)] = -math.log2(1 - p0)
#self_Connect_dict[(w_m, w_n)] = -math.log2(1 - p0)
#print (str(w_n) + "," + str(w_m))
#print (self_Connect_dict[(w_n, w_m)])
#print(self_Connect_dict)
self_Conditional_dict = {}
for z in nodes:
w_z = nodes_Weight_dict[z]
if w_z > 1:
alpha = 2 / (w_z * (w_z - 1))
cc_z = nx.clustering(G, z) #修改为加权聚类系数
if cc_z == 0:
log_c = beta
else:
log_c = -math.log2(cc_z)
# end if
s = 0
neighbor_list = nx.neighbors(G, z)
size = len(neighbor_list)
for i in range(size):
m = neighbor_list[i]
for j in range(i + 1, size):
n = neighbor_list[j]
(k_x, k_y) = pair(nodes_Weight_dict[m],
nodes_Weight_dict[n])
if i != j:
s += (self_Connect_dict[(k_x, k_y)] - log_c)
self_Conditional_dict[z] = alpha * s
print(self_Conditional_dict)
sim_dict = {} # 存储相似度的字典
ebunch = nx.non_edges(G)
for x, y in ebunch:
s = 0
(k_x, k_y) = pair(nodes_Weight_dict[x], nodes_Weight_dict[y])
for z in nx.common_neighbors(G, x, y):
s += self_Conditional_dict[z]
sim_dict[(x, y)] = s - self_Connect_dict[(k_x, k_y)]
# end if
# end for
#print(sim_dict)
return sim_dict
def get_trings(atoms, index, code, validation='cross_distance', cutoff=3.15):
'''
Function to find all the rings asssociated with a T-site in a zeolite
framework.
INPUTS:
atoms: (ASE atoms object) the zeolite framework to be analyzed
works best if you remove any adsorbates first
index: (integer) index of the atom that you want to classify
code: (str) IZA code for the zeolite you are using (i.e. 'CHA')
validation: (str) Method in which to determin valid rings.
cross_distance: uses cross ring Si-Si distances
d2: ensures each ring can't be decomposed into two
smaller rings
sphere: Checks that no non ring atoms are within some
cutoff radius of the center of mass of the
ring.
Cutoff input is required for this method
sp: Custum shortest path method, not very reliable
cutoff: (float) Value required for the sphere validation method
OUTPUTS:
ring_list: (list) The size of rings associated with the oxygen.
paths: (2d array) The actual atom indices that compose found rings.
ring_atoms: (ASE atoms object) all the rings found
'''
#get possible rings, and max rings size
ring_sizes = get_ring_sizes(code) * 2
max_ring = max(ring_sizes)
# repeat the unit cell so it is large enough to capture the max ring size
# also turn this new larger unit cell into a graph
G, large_atoms, repeat = atoms_to_graph(atoms, index, max_ring)
index = [atom.index for atom in large_atoms if atom.tag == index][0]
# to find all the rings associated with a T site, we need all the rings
# associated with each oxygen bound to that T site. We will use networkx
# neighbors to find those oxygens
import networkx as nx
paths = []
for n in nx.neighbors(G, index):
paths = paths + get_paths(G, n, ring_sizes)
# Since we found the rings for each oxygen attached to the T-site,
# there will be duplicate rings. Let's remove those.
paths = remove_dups(paths)
# now we want to remove all the non ring paths, the method for determining
# valid rings is designated with the validation input variable.
if validation == 'sp':
paths = sp(G, paths)
if validation == 'd2':
paths = d2(G, paths)
if validation == 'sphere':
if cutoff == None:
print(
'INPUT ERROR: Validation with geometry requires cutoff in Å, however, cutoff not set.'
)
return
paths = sphere(large_atoms, paths, cutoff)
if validation == 'cross_distance':
paths = cross_distance(large_atoms, paths)
# finally organize all outputs: list of ring sizes, atom indices that make
# ring paths, and an atoms object that shows all those rings
ring_list = [int(len(p) / 2) for p in paths]
paths2 = [x for _, x in sorted(zip(ring_list, paths), reverse=True)]
tmp_paths = [x for _, x in sorted(zip(ring_list, paths), reverse=True)]
paths = []
for p in tmp_paths:
temp = []
for i in p:
temp.append(large_atoms[i].tag)
paths.append(temp)
ring_list.sort(reverse=True)
ring_atoms = paths_to_atoms(large_atoms, paths2)
return ring_list, paths, ring_atoms
def main(self, filename):
# #拿到图
# subGraph=self.get_Graph('../Propagation_subgraph/many_methods/result/chouqu.txt')
# initG = commons.get_networkByFile('../../../data/CA-GrQc.txt')
# initG = commons.get_networkByFile('../../../data/3regular_tree1000.txt')
initG = commons.get_networkByFile(filename)
# initG = commons.get_networkByFile('../../../data/CA-GrQc.txt')
# initG = commons.get_networkByFile('../../../data/4_regular_graph_3000_data.txt')
# initG = commons.get_networkByFile('../../../data/email-Eu-core.txt')
max_sub_graph = commons.judge_data(initG)
# source_list = product_sourceList(max_sub_graph, 2)
source_list = commons.product_sourceList(max_sub_graph, 2)
# print('两个节点的距离', nx.shortest_path_length(max_sub_graph, source=source_list[0], target=source_list[1]))
infectG = commons.propagation1(max_sub_graph, source_list)
subinfectG = commons.get_subGraph_true(infectG) # 只取感染点，为2表示,真实的感染图。
self.judge_data(subinfectG)
# single_source = commons.revsitionAlgorithm_singlueSource(subinfectG)
distance_iter = nx.shortest_path_length(subinfectG)
everynode_distance = []
for node, node_distance in distance_iter:
# print(node_distance)
sort_list = sorted(node_distance.items(),
key=lambda x: x[1],
reverse=True)
# print('sort_list',sort_list)
everynode_distance.append([node, sort_list[0][0], sort_list[0][1]])
# print('everynode_idstance',everynode_distance)
sort_every_distance = sorted(everynode_distance,
key=lambda x: x[2],
reverse=True)
print('sort_every_distance', sort_every_distance)
#从两个最远的点进行BFS直到找到单源的位置。
# print(nx.shortest_path_length(infectG,source=single_source[0],target=sort_every_distance[0][0]))
# print(nx.shortest_path_length(infectG, source=single_source[0], target=sort_every_distance[0][1]))
#
# print(nx.shortest_path_length(infectG, source=single_source[0], target=sort_every_distance[1][0]))
# print(nx.shortest_path_length(infectG, source=single_source[0], target=sort_every_distance[1][1]))
#
# print(nx.shortest_path_length(infectG, source=single_source[0], target=sort_every_distance[2][0]))
# print(nx.shortest_path_length(infectG, source=single_source[0], target=sort_every_distance[2][1]))
# #根据最远得点，把我们的那个啥，分区，然后利用分区点进行单源定位。。
node_twolist = [[], []]
lengthA_dict = nx.single_source_bellman_ford_path_length(
subinfectG, sort_every_distance[0][0], weight='weight')
lengthB_dict = nx.single_source_bellman_ford_path_length(
subinfectG, sort_every_distance[0][1], weight='weight')
for node in list(subinfectG.nodes):
if lengthA_dict[node] > lengthB_dict[node]: # 这个点离b近一些。
node_twolist[1].append(node)
elif lengthA_dict[node] < lengthB_dict[node]:
node_twolist[0].append(node)
# else:
# node_twolist[0].append(node)
# node_twolist[1].append(node)
print('len(node_twolist[0]', len(node_twolist[0]))
print('len(node_twolist[1]', len(node_twolist[1]))
# 边界点。
bound_list = []
for node_temp in list(infectG.nodes()):
# print(node_temp)
if infectG.node[node_temp]['SI'] == 2:
neighbors_list = list(nx.neighbors(infectG, node_temp))
neighbors_infect_list = [
x for x in neighbors_list if infectG.node[x]['SI'] == 2
]
if len(neighbors_list) != 1 and len(
neighbors_infect_list) == 1:
# if len(neighbors_infect_list) == 1:
bound_list.append(node_temp)
print('boundelist', len(bound_list))
print('len(kjlk)',
len([x for x in bound_list if x in list(subinfectG.nodes())]))
left = [x for x in bound_list if x in node_twolist[0]]
right = [x for x in bound_list if x in node_twolist[1]]
print('left', left)
print('right', right)
left_source = commons.revsitionAlgorithm_singlueSource_receive(
subinfectG, left)
right_source = commons.revsitionAlgorithm_singlueSource_receive(
subinfectG, right)
if set(left) < set(list(subinfectG.nodes())):
print('left在感染点里面啊')
if set(right) < set(list(subinfectG.nodes())):
print('left在感染点里面啊')
distance = commons.cal_distance(infectG,
[left_source[0], right_source[0]],
source_list)
return distance
mapping = {node: str(id) for id, node in enumerate(g.nodes())}
g = nx.relabel_nodes(g, mapping=mapping)
num_of_nodes = g.number_of_nodes()
# perform random walks
L = 10000
N = 1
walks = []
for node in g.nodes():
walk = [node]
for l in range(1, L):
prev = walk[-1]
nb_list = list(nx.neighbors(g, prev))
p = np.asarray([float(g.degree(nb)) for nb in nb_list])
p = p / np.sum(p)
next = np.random.choice(a=nb_list, size=1, p=p)[0]
walk.append(next)
walks.append(walk[1:])
# Degree frequency
expected_freq = np.zeros(shape=(num_of_nodes, ), dtype=np.float)
estimated_freq = np.zeros(shape=(num_of_nodes, ), dtype=np.float)
expected_freq = np.asarray(
[float(nx.degree(g, str(node))) for node in range(num_of_nodes)])
expected_freq = expected_freq / np.sum(expected_freq)
def test_neighbors(self):
assert_equal(self.G.neighbors(1), nx.neighbors(self.G, 1))
assert_equal(self.DG.neighbors(1), nx.neighbors(self.DG, 1))
def get_actions_by_node(self, node_name):
s_idx = self.get_index_by_name(node_name)
ts_idx = list(nx.neighbors(self.g_acs, s_idx))
# send valid actions in ACTION_LOOKUP
return [self.get_edge_attr_acs_by_idx(s_idx, t_idx) for t_idx in ts_idx]
# shortest_paths = [list([-1]*len(temp)) for i in range(len(temp))]
#
# for i in range(len(temp)):
# for j in range(len(temp)):
# if nx.has_path(G,name_interactor_dict[temp[tabela_genov[i]]], name_interactor_dict[temp[tabela_genov[j]]]):
# shortest_paths[i][j] = len(nx.shortest_path(G,name_interactor_dict[temp[tabela_genov[i]]], name_interactor_dict[temp[tabela_genov[j]]]))
# else:
# shortest_paths[i][j] = 9999
# # print(len(nx.shortest_path(G,name_interactor_dict[temp[tabela_genov[i]]], name_interactor_dict[temp[tabela_genov[j]]])))
gene_neighbours = {}
for gene in tabela_genov:
# print(gene, n_neighbor(G, name_interactor_dict[temp[gene]],2))
gene_neighbours[name_interactor_dict[temp[gene]]] = nx.neighbors(G,name_interactor_dict[temp[gene]])
gene_neighbours_2 = defaultdict(list)
for gene in tabela_genov:
# print(gene, n_neighbor(G, name_interactor_dict[temp[gene]],2))
for gen1 in gene_neighbours[name_interactor_dict[temp[gene]]]:
gene_neighbours_2[name_interactor_dict[temp[gene]]] += nx.neighbors(G,gen1)
# gene_neighbours[name_interactor_dict[temp[gene]]] = nx.neighbors(G,name_interactor_dict[temp[gene]])
for gene in gene_neighbours_2:
gene_neighbours_2[gene] = set(gene_neighbours_2[gene])
# print combinations of n genes, orderd by jaccard similarity
# for n in [3,4,5]:
# comb_num_dict = {}
# for c in combinations([key for key in temp if key in simon],n):
def get_all_states_by_node(self, node_name):
s_idx = self.get_index_by_name(node_name)
ts_idx = list(nx.neighbors(self.g_acs, s_idx))
# send the whole 1st order subgraph (current_index, list_of_neighbor_index, list_of_action_nums)
return s_idx, ts_idx, [self.get_edge_attr_acs_by_idx(s_idx, t_idx) for t_idx in ts_idx]
N = 99
Max_Num_Neighbor = 50
resolution = 0.5
G_all = nx.Graph()
G_all.add_edges_from(relation_train_positive.values)
G_all.add_edges_from(relation_test.values)
test_user = relation_test.user.values
uninteract_user_list = []
uninteract_item_list = []
for user in test_user:
interact_item = nx.neighbors(G_all, user)
un_interact_item = list(set(all_item) - set(interact_item))
np.random.shuffle(un_interact_item)
if len(un_interact_item) < N:
un_interact_item = un_interact_item * (int(N / len(un_interact_item)) +
1)
un_interact_item_choose = un_interact_item[:N]
uninteract_user_list += [user] * N
uninteract_item_list += un_interact_item_choose
uninteract = pd.DataFrame(np.array(
[uninteract_user_list, uninteract_item_list]).T,
columns=['user', 'item'])
G = nx.Graph()
G.add_edges_from(relation_train_positive.values)
def test_neighbors(self):
assert list(self.G.neighbors(1)) == list(nx.neighbors(self.G, 1))
assert list(self.DG.neighbors(1)) == list(nx.neighbors(self.DG, 1))
def neighbors(G, v):
return list(nx.neighbors(G, v)) # requires 'v'
def test_orings(atoms, index, possible):
cell = atoms.get_cell_lengths_and_angles()[:3]
repeat = []
possible = possible * 2
maxring = max(possible)
for i, c in enumerate(cell):
if c / 2 < maxring / 2 + 5:
l = c
re = 1
while l / 2 < maxring / 2 + 5:
re += 1
l = c * re
repeat.append(re)
else:
repeat.append(1)
atoms2 = atoms.copy()
atoms2 = atoms2.repeat(repeat)
center = atoms2.get_center_of_mass()
trans = center - atoms2.positions[index]
atoms2.translate(trans)
atoms2.wrap()
cutoff = neighborlist.natural_cutoffs(atoms2, mult=1.05)
nl = neighborlist.NeighborList(cutoffs=cutoff,
self_interaction=False,
bothways=True)
nl.update(atoms2)
matrix = nl.get_connectivity_matrix(sparse=False)
m = matrix.copy()
G = nx.from_numpy_matrix(matrix)
neighbs = nx.neighbors(G, index)
fe = []
for n in neighbs:
if atoms2[n].symbol != 'O':
fe.append(n)
fe.append(index)
tmpClass = []
rings = []
G2 = G.copy()
G2.remove_edge(fe[0], fe[2])
pr = sorted(possible)
rings = []
for q in pr:
tmprings = []
paths = nx.all_simple_paths(G2, fe[0], fe[2], cutoff=q - 1)
for p in paths:
tmprings.append(p)
for r in tmprings:
length = len(r)
if length in possible:
if ((len(r) / 2) % 2) == 0:
try:
G2.remove_node(r[int(length / 2 - 1)])
except:
2 + 2
elif ((len(r) / 2) % 2) != 0:
try:
G2.remove_node(r[int(length / 2)])
except:
2 + 2
rings.append(r)
rings = remove_dups(rings)
rings = remove_sec(rings)
Class = []
for r in rings:
Class.append(int(len(r) / 2))
paths = rings
paths = [x for _, x in sorted(zip(Class, paths), reverse=True)]
Class.sort(reverse=True)
keepers = []
for i in paths:
for j in i:
if j not in keepers:
keepers.append(j)
d = [atom.index for atom in atoms2 if atom.index not in keepers]
del atoms2[d]
return Class, paths, atoms2