def main(script, n='1000', *args):
# # create n Vertices
# n = int(n)
# labels = string.ascii_lowercase + string.ascii_uppercase
# vs = [Vertex(c) for c in labels[:n]]
#
# # create a graph and a layout
# g = RandomGraph(vs)
# g.add_random_edges(0.015)
# print g.is_connected()
# layout = GraphWorld.CircleLayout(g)
#
# # draw the graph
# gw = GraphWorld.GraphWorld()
# gw.show_graph(g, layout)
# gw.mainloop()
for n in range(100, 10000, 1000):
for p in range(1, 100):
p = p / 100.0
success = 0
for each in range(1000):
vs = [Vertex(str(c)) for c in range(n)]
g = RandomGraph(vs)
g.add_random_edges(p)
success += g.is_connected()
pct = float(success) / 1000
print 'N: %s\t\tp: %s\t\t pct connected: %s' % (n, p, pct)
def test_phase_transition(n):
# create n Vertices
n = int(n)
labels = string.ascii_lowercase + string.ascii_uppercase
vs = [Vertex(c) for c in labels[:n]]
con_list = []
# for k in np.linspace(0, 1, 200):
limit = (1-math.e) * math.log(n, math.e) / n
print limit
for k in np.linspace(0, 1, 500):
this_time_connect_list = []
for x in range(3):
g = RandomGraph(vs)
try:
g.add_random_edges(k)
except:
continue
con = g.is_connected()
this_time_connect_list.append(1 if con else -1)
this_con = sum(this_time_connect_list)
con_list.append((round(k, 4), this_con))
for x in xrange(len(con_list) - 1):
if con_list[x][1] * con_list[x + 1][1] < 0:
print con_list[x], '>>>>', con_list[x+1]
def testrandomcomplete(rn = 15): for n in range(2, rn): for p in range(10): prob = p / 10.0 labels = string.ascii_lowercase + string.ascii_uppercase vs = [Vertex(c) for c in labels[:n]] g = RandomGraph(vs) g.add_random_edges(prob) print "%s, %s, %s" % (n, prob, g.is_connected())
def __init__(self, p, m_0, t):
vs = [Vertex('v'+str(i)) for i in xrange(m_0)]
RandomGraph.__init__(self, vs, p)
self.sum_k = sum([len(self[v]) for v in self])
[self.add_prefer_vert(str(i+m_0)) for i in xrange(t)]
self.assign_edge_lengths()
self.clust = self.clustering_coefficient()
self.length = self.average_length()
self.avg_deg = self.average_degree()
def estimate_probability(n, p, reps=100):
"""Estimate the probability that a random graph with edge probaility
is connected. The probability is estimated after reps repetirions"""
n_connected = 0
vs = []
for v in range(n):
vs.append(Vertex(str(v)))
for ix in range(reps):
g = RandomGraph(vs)
g.add_random_edges(p)
if g.is_connected():
n_connected += 1
return 1. * n_connected / reps
def main(script, n="10", *args):
# create n Vertices
n = int(n)
labels = string.ascii_lowercase + string.ascii_uppercase
vs = [Vertex(c) for c in labels[:n]]
# create a graph and a layout
g = RandomGraph(vs)
g.add_random_edges(0.2)
layout = CircleLayout(g)
# draw the graph
gw = GraphWorld()
gw.show_graph(g, layout)
gw.mainloop()
def main(script, n='10', *args):
# create n Vertices
n = int(n)
labels = string.ascii_lowercase + string.ascii_uppercase
vs = [Vertex(c) for c in labels[:n]]
# create a graph and a layout
g = RandomGraph(vs)
g.add_random_edges(0.2)
layout = CircleLayout(g)
# draw the graph
gw = GraphWorld()
gw.show_graph(g, layout)
gw.mainloop()
def test_random_generator(n, p):
# create n Vertices
n = int(n)
p = float(p)
labels = string.ascii_lowercase + string.ascii_uppercase
vs = [Vertex(c) for c in labels[:n]]
# create a graph and a layout
g = RandomGraph(vs)
# g.add_all_edges()
g.add_random_edges(p)
layout = CircleLayout(g)
# draw the graph
gw = GraphWorld()
gw.show_graph(g, layout)
destroy_graph(gw, 2)
gw.mainloop()
def test_bfs(bfs_func, maxpow):
ns = []
ts = []
max_n = 8 * (10 ** maxpow)
for n in range(5, max_n, 10):
ns.append(n)
nodes = []
for each in range(n):
nodes.append(Vertex(gen_alphanum()))
g = RandomGraph(vs=nodes)
g.add_random_edges(0.3)
search_vertex = g.vertices()[0]
# Actual BFS starts here
start = etime()
bfs_func(search_vertex, dummy_visit, g)
end = etime()
# ANd ends here
search_time = end - start
ts.append(search_time)
return {"sizes": ns, "times": ts}
def main(script, n='20', graphs='10',probs='0.2'):
# create n Vertices
n = int(n)
graphs = int(graphs)
probs = float(probs)
labels = string.ascii_lowercase + string.ascii_uppercase + string.digits
vs = [Vertex(c) for c in labels[:n]]
# create a graph and a layout
g = RandomGraph(vs)
#g.add_all_edges()
g.regular_edges_handshake(4)
print g.is_connected()
layout = CircleLayout(g)
# draw the graph
gw = GraphWorld()
gw.show_graph(g, layout)
gw.mainloop()
def __init__(self, vs, k, p):
RandomGraph.__init__(self, vs)
self.add_regular_edges(k=k)
self.rewire(p=p)
self.assign_edge_lengths()
def __init__(self, vs, k, p):
RandomGraph.__init__(self, vs)
self.add_regular_edges(k=k)
self.rewire(p=p)
self.assign_edge_lengths()
def __init__(self, vs, k, p):
RandomGraph.__init__(self, vs)
self.add_regular_edges(k=k)
def __init__(self, n, k):
vs = [Vertex(i) for i in range(n)]
RandomGraph.__init__(self, vs, [])
self.k = k
self.add_regular_edges(k)