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####
##
## Compute the edge overlap of each edge of the multiplex, i.e. the
## number of times that each edge appears in the multiplex
##
##
import sys
if len(sys.argv) < 2:
print "Usage: %s <layer1> [<layer2>...]" % sys.argv[0]
sys.exit(1)
max_N = -1
all_edges = {}
layer_ID = -1
for layer in sys.argv[1:]:
layer_ID += 1
with open(layer, "r") as lines:
for l in lines:
if l[0] == "#":
continue
s, d = [int(x) for x in l.strip(" \n").split(" ")[:2]]
if s > d:
tmp = s
s = d
d = tmp
if (s,d) in all_edges:
all_edges[(s,d)].append(layer_ID)
else:
all_edges[(s,d)] = [layer_ID]
K = len(all_edges.keys())
for k in all_edges.keys():
val = len(set(all_edges[(k)]))
s,d = k
print s, d, val
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