def get_combined_ranks(ranklists):
emptyRankList = 0
nonEmptyRankList = -1
for ranklist in ranklists:
if len(ranklist) == 0:
emptyRankList += 1
if emptyRankList >= 1:
for ranklist in ranklists:
if len(ranklist) > 0:
sorted_ranklist = sorted(ranklist.items(), key=lambda x:x[1], reverse = True)
return sorted_ranklist[:10],1.0
return None,None
ranker_names = [str(i) for i in xrange(0,len(ranklists))]
objects = {}
oid = 0
oid_name = {}
num = len(ranklists)
for i in xrange(0,num):
sorted_ranklist = sorted(ranklists[i].items(), key=lambda x:x[1], reverse = True)
for k in xrange(0,len(sorted_ranklist)):
key = sorted_ranklist[k][0]
val = float(sorted_ranklist[k][1])
if key not in objects:
oid_name[oid] = key
oid += 1
objects[oid] = [None for j in xrange(0,num)]
objects[oid][i] = k
alpha = 0.85
ranker, score = r.pagerank_aggregator(objects, 0.000001, alpha)
final_ranklist = sorted(ranker.items(), key=lambda x:x[1])
final_ranklist = final_ranklist[:10]
final_keys = []
for i in xrange(0,len(final_ranklist)):
final_keys.append(oid_name[final_ranklist[i][0]])
return final_keys,score
except:
print_error("Incorrect file provided, cannot read rankers")
agg = sys.argv[2]
arguments = sys.argv[3:]
lastloc = 0
if agg == 'pg':
alpha = 0.85
if len(arguments)>0:
try:
alpha = float(arguments[0])
lastloc = 1
except:
print_error("Incorrect alpha provided or alpha is omitted")
ranker, score = r.pagerank_aggregator(objects, 0.000001, alpha)
print "Pagerank algorithm, alpha =", alpha, ", score:", score
elif agg == 'in':
ranker, score = r.indegree_aggregator(objects)
print "Indegree algorithm, score:", score
elif agg == 'rnd':
k=1
if len(arguments)>0:
try:
k = int(arguments[0])
lastloc = 1
except:
print_error("An integer for the number of tries is required")
print "Random rank algorithm with k =", k
