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generate_vantage_points_using_many.py
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generate_vantage_points_using_many.py
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#!/usr/bin/python
#-*- coding:utf-8 -*-
import utils
import string
import random
def generateUniformRandomVP(numberOfDimension,numberOfAlphabet):
ret = []
alphabet = list(string.ascii_uppercase)
for i in xrange(numberOfDimension):
cur = random.randrange(0,numberOfAlphabet)
ret.append(alphabet[cur])
return ret
def generateVantagePointsWithPattern(options):
numberOfData = options['numberOfData']
dim = options['numberOfDimension']
numberOfVP = options['numberOfVP']
cardinality = options['numberOfAlphabet']
typeOfVP = options['typeOfVP']
datas = utils.getDataInFile(utils.getDataFileName(options))
majorPattern = [ [] for i in xrange(numberOfVP) ]
minorPattern = [ [] for i in xrange(numberOfVP) ]
for j in xrange(dim):
d = {}
for i in xrange(numberOfData):
if datas[i][j] in d:
d[datas[i][j]] += 1
else :
d[datas[i][j]] = 0
d = sorted(d.items(), key=lambda x: x[1], reverse=True)
for k in xrange(numberOfVP):
majorPattern[k].append(d[k][0])
minorPattern[k].append(d[-1-k][0])
utils.writeDataToFile('vp/vp_%d_%d_%d_%s.txt'%(dim,numberOfVP,cardinality,'major'),majorPattern)
utils.writeDataToFile('vp/vp_%d_%d_%d_%s.txt'%(dim,numberOfVP,cardinality,'minor'),minorPattern)
def calculateMany(vps):
s = set()
for i in xrange(len(vps)):
for j in xrange(len(vps)):
if i != j :
now = utils.hammingDistance(vps[i],vps[j])
s.add(now)
return len(s)
def generateVantagePointsWithManyAlgorithm(options):
numberOfData = options['numberOfData']
dim = options['numberOfDimension']
numberOfVP = options['numberOfVP']
cardinality = options['numberOfAlphabet']
typeOfVP = options['typeOfVP']
datas = utils.getDataInFile(utils.getDataFileName(options))
vps = []
vps.append(datas[0])
while len(vps) < numberOfVP:
print len(vps)
ans,ansDataIndex = -1,-1
for i in xrange(len(datas)):
ok = False
for j in xrange(len(vps)):
if datas[i] == vps[j]:
ok = True
if ok:
continue
vps.append(datas[i])
cur = calculateMany(vps)
if cur > ans:
ans,ansDataIndex = cur,i
vps = vps[:-1]
vps.append(datas[ansDataIndex])
utils.writeDataToFile('vp/vp_%d_%d_%d_%s.txt'%(dim,numberOfVP,cardinality,typeOfVP),vps)
#utils.writeDataToFile('vp/vp_%d_%d_%d_%s.txt'%(dim,numberOfVP,cardinality,typeOfVP),vps)
if __name__ == '__main__':
options = utils.getOptions()
utils.createDirectory('vp')
generateVantagePointsWithPattern(options)
generateVantagePointsWithManyAlgorithm(options)