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sampling.cpp
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sampling.cpp
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#include "sampling.h"
Sampling* Sampling::_pInstance = new Sampling();
Sampling::Sampling():f1(0.0),C(20),C1(40),mu(0.1),tao(6),xipuxiluo(8),samplingCount(1000),totalCount(11589)
{
userGraphMap = NULL;
sidWTIMap = NULL;
widSTMap = NULL;
keyWordList.clear();
hotWordList.clear();
keyWordMap.clear();
hotWordMap.clear();
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"Sampling Init");
}
Sampling* Sampling::GetInstance()
{
if(_pInstance == NULL)
_pInstance = new Sampling();
return _pInstance;
}
bool Sampling::GetKeyWordMap(const string &startTime,const string &endTime)
{
map<int,int> *widCountMap;
map<int,int>::iterator widCountiter;
map<int,float>::iterator keyWordIter;
//统计在时间粒度下startTime 到 endTime之间的关键词
AssessUtil::GetInstance()->IntervalAssess(startTime,endTime);
widCountMap = AssessUtil::GetInstance()->GetWidCountMap();
for(keyWordIter = keyWordMap.begin();keyWordIter != keyWordMap.end();keyWordIter++)
{
keyWordIter->second = 0;
}
keyWordList.clear();
for(widCountiter = widCountMap->begin();widCountiter != widCountMap->end();widCountiter++)
{
keyWordIter = keyWordMap.find(widCountiter->first);
if(keyWordIter != keyWordMap.end())
{
keyWordMap[widCountiter->first] = widCountiter->second;
keyWordList.push_back(widCountiter->first);
}
}
return true;
}
bool Sampling::GetHotWordMap(const string &startTime,const string &endTime)
{
map<int,int> *widCountMap;
map<int,int>::iterator widCountiter;
map<int,float>::iterator hotWordIter;
//统计在时间粒度下startTime 到 endTime之间的关键词
AssessUtil::GetInstance()->IntervalAssess(startTime,endTime);
widCountMap = AssessUtil::GetInstance()->GetWidCountMap();
for(hotWordIter = hotWordMap.begin();hotWordIter != hotWordMap.end();hotWordIter++)
{
hotWordIter->second = 0;
}
hotWordList.clear();
for(widCountiter = widCountMap->begin();widCountiter != widCountMap->end();widCountiter++)
{
hotWordIter = hotWordMap.find(widCountiter->first);
if(hotWordIter != hotWordMap.end())
{
hotWordMap[widCountiter->first] = widCountiter->second;
hotWordList.push_back(widCountiter->first);
}
}
return true;
}
bool Sampling::BuildKeyHotWordMap(const string &startTime,const string &endTime)
{
keyWordMap.clear();
hotWordMap.clear();
//根据一天中的统计，找到关键词集合以及热点话题词集合
AssessUtil::GetInstance()->IntervalAssess(startTime,endTime);
map<int,int> *widCountMap;
map<int,int>::iterator widCountiter;
widCountMap = AssessUtil::GetInstance()->GetWidCountMap();
for(widCountiter = widCountMap->begin();widCountiter != widCountMap->end();widCountiter++)
{
if(widCountiter->second > C && CacheUtil::GetInstance()->FindPosByWid(widCountiter->first)== "n")
{
keyWordMap[widCountiter->first] = 0;
if(widCountiter->second > C1)
hotWordMap[widCountiter->first] = 0;
}
}
return true;
}
bool Sampling::CalculateF1()
{
vector<int> commonWordList;
map<int,float>::iterator hotWordIter;
map<int,float>::iterator keyWordIter;
float R = 0.0;
float P = 0.0;
float f1 = 0.0;
for(unsigned int i=0;i<keyWordList.size();i++)
{
hotWordIter = hotWordMap.find(keyWordList[i]);
if(hotWordIter != hotWordMap.end() && hotWordIter->second != 0)
commonWordList.push_back(keyWordList[i]);
}
for(unsigned int i=0;i<commonWordList.size();i++)
{
hotWordIter = hotWordMap.find(commonWordList[i]);
keyWordIter = keyWordMap.find(commonWordList[i]);
float hotWordValue = 0.0;
float keyWordvalue = 0.0;
float precision = 0.0;
if(hotWordIter != hotWordMap.end())
{
hotWordValue = hotWordIter->second;
}
if(keyWordIter != keyWordMap.end())
{
keyWordvalue = keyWordIter->second;
}
precision = (hotWordValue+keyWordvalue-fabs(hotWordValue-keyWordvalue))/(hotWordValue+keyWordvalue);
R += precision;
P += precision;
}
if(P != 0 && R != 0)
{
P = P/keyWordList.size();
R = R/hotWordList.size();
f1 = 2*P*R/(P+R);
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),f1<<"\t"<<P<<"\t"<<R);
}
else
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),0<<"\t"<<0<<"\t"<<0);
}
return true;
}
bool Sampling::ModelSpread(Queue<long> &lqueue,map<long,UserStatus> &userSMap)
{
map<long,UserStatus>::iterator iter2;
map<long,float> userSMapDcache;
map<long,float>::iterator iter3;
map<long int,UserLink>::iterator iter4;
while(!lqueue.IsEmpty()){
long userid = lqueue.GetQueue();
iter4 = userGraphMap->find(userid);
//免疫因子 /mu
if(userSMap[userid].tfIdf<mu){
continue;
}
if(iter4 != userGraphMap->end())
{
UserLink head = iter4->second;
float srcWeight = head->weight;
float dstWeight;
int connect;
UserNode *g = head->next;
while(g!=NULL){
iter2 = userSMap.find(g->uid);
if(iter2 == userSMap.end())
{
dstWeight = g->weight;
connect = g->connect;
float diffuseRate = DiffuseRate(srcWeight,dstWeight,connect);
float tfIdf = userSMap[userid].tfIdf;
iter3 = userSMapDcache.find(g->uid);
if(iter3 != userSMapDcache.end())
userSMapDcache[g->uid] += tfIdf*diffuseRate;
userSMapDcache[g->uid] = tfIdf*diffuseRate;
}
g = g->next;
}
}
if(lqueue.IsEmpty())
{
for(iter3 = userSMapDcache.begin();iter3 != userSMapDcache.end();iter3++)
{
lqueue.EnQueue(iter3->first);
UserStatus userStatus;
userStatus.infected =true;
userStatus.tfIdf = iter3->second;
userSMap[iter3->first] = userStatus;
}
userSMapDcache.clear();
}
}
return true;
}
bool Sampling::BuildQueue(Queue<long> &lqueue,map<long,UserStatus> &userSMap,StatusTagLink p,const int &wid)
{
map<long,WordTfIdfLink>::iterator iter;
map<long int,UserLink>::iterator userGraphIter;
while(p!=NULL)
{
long userid = p->userid;
float tfIdf;
iter = sidWTIMap->find(p->sid);
if(iter != sidWTIMap->end())
{
WordTfIdfNode *q = iter->second->next;
while(q!=NULL)
{
if(q->wid == wid)
{
tfIdf = q->tfIdf;
break;
}
q = q->next;
}
if(q==NULL)
tfIdf = 0.0;
}
else
{
tfIdf = 0.0;
}
p = p->next;
userGraphIter = userGraphMap->find(userid);
if(userGraphIter != userGraphMap->end())
{
UserStatus userStatus;
userStatus.tfIdf = tfIdf;
userStatus.infected = true;
userSMap[userid] = userStatus;
lqueue.EnQueue(userid);
}
}
return true;
}
float Sampling::DiffuseRate(const int &srcWeight,const int &dstWeight,const int &connect)
{
//xipuxiluo 也是一个总要参数
float diffuseRate = float(srcWeight)/(srcWeight+dstWeight)/exp(1/double(connect))/xipuxiluo;
return diffuseRate;
}
bool Sampling::TopicDiffuse()
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse Start");
map<int,StatusTagLink>::iterator iter;
map<long,UserStatus> userSMap;
map<long,UserStatus>::iterator userSIter;
for(unsigned int i=0;i<keyWordList.size();i++)
{
//针对每一个单词，循环查找每一个单词，它的概率
map<long,UserStatus> userSMap;
float keyWordValue = 0.0;
int wid = keyWordList[i]; //获得keyword的id
iter = widSTMap->find(wid);
if(iter == widSTMap->end())
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"continue");
continue;
}
Queue<long> useridQueue;
StatusTagNode *p = iter->second->next;
BuildQueue(useridQueue,userSMap,p,wid);
ModelSpread(useridQueue,userSMap);
for(userSIter = userSMap.begin();userSIter != userSMap.end();userSIter++)
{
keyWordValue += userSIter->second.tfIdf;
}
keyWordMap[keyWordList[i]]=keyWordValue;
userSMap.clear();
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse End");
return true;
}
bool Sampling::StatisticUserInfo(map<long int,UserLink> *userGraphMap) //统计用户数量
{
//重新值得研究一下，方差以及期望
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"StatisticUserInfo Start");
int userCount = 0;
int totalDegree = 0;
map<long int,UserLink>::iterator iter;
map<int,int> squareMap;
map<int,int>::iterator iter2;
userCount = userGraphMap->size();
UserLink userLink;
for(iter = userGraphMap->begin();iter != userGraphMap->end();iter++)
{
long int uid = iter->first;
int degree = 0;
userLink = iter->second->next;
while(userLink !=NULL)
{
degree++;
totalDegree++;
userLink = userLink->next;
}
squareMap[degree] += 1;
}
float aveDgree = totalDegree/float(userCount);
//统计用户数
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),userCount);
//统计用户平均度数
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),aveDgree);
//候选话题词汇
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),keyWordList.size());
//统计角度的平方差
for(iter2 = squareMap.begin();iter2 != squareMap.end();iter2++)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),iter2->first<<"\t"<<iter2->second);
}
//统计话题词个数
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"StatisticUserInfo End");
return true;
}
bool Sampling::SamplingUserHead(UserLLink userhead)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingUserHead Init");
cout<<"SamplingUserHead start"<<endl;
int initState = 1;
int record = 0;
int k = totalCount/samplingCount;
int sampling = 0;
UserL* p = userhead->next;
UserL* q = userhead;
while(p!=NULL && sampling<= samplingCount)
{
record++;
if(record == initState)
{
q->next = p->next;
delete p;
p = q->next;
initState += k;
sampling++;
}
else
{
q = p;
p = p->next;
}
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingUserHead End");
cout<<"SamplingUserHead end"<<endl;
return true;
}
bool Sampling::Init(){
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"Sampling Init");
//进行话题初始化，计算的是2009-10-01之前的话题数据
sidWTIMap = TopicDiscover::GetInstance()->GetSidWTIMap();
userGraphMap = BuildGraph::GetInstance()->GetUserGraphMap();
widSTMap = TopicDiscover::GetInstance()->GetWidSTMap();
//时间粒度 /tao 0.5小时，1个小时；2个小时
//对时间进行初始化
string dateArray[127] = {"2009-08-12","2009-08-13","2009-08-14","2009-08-15"
,"2009-08-16","2009-08-17","2009-08-18","2009-08-19","2009-08-20"
,"2009-08-21","2009-08-22","2009-08-23","2009-08-24","2009-08-25"
,"2009-08-26","2009-08-27","2009-08-28","2009-08-29","2009-08-30"
,"2009-08-31","2009-09-01","2009-09-02","2009-09-03","2009-09-04"
,"2009-09-05","2009-09-06","2009-09-07","2009-09-08","2009-09-09"
,"2009-09-10","2009-09-11","2009-09-12","2009-09-13","2009-09-14"
,"2009-09-15","2009-09-16","2009-09-17","2009-09-18","2009-09-19"
,"2009-09-20","2009-09-21","2009-09-22","2009-09-23","2009-09-24"
,"2009-09-25","2009-09-26","2009-09-27","2009-09-28","2009-09-29"
,"2009-09-30","2009-10-01","2009-10-02","2009-10-03","2009-10-04"
,"2009-10-05","2009-10-06","2009-10-07","2009-10-08","2009-10-09"
,"2009-10-10","2009-10-11","2009-10-12","2009-10-13","2009-10-14"
,"2009-10-15","2009-10-16","2009-10-17","2009-10-18","2009-10-19"
,"2009-10-20","2009-10-21","2009-10-22","2009-10-23","2009-10-24"
,"2009-10-25","2009-10-26","2009-10-27","2009-10-28","2009-10-29"
,"2009-10-30","2009-10-31","2009-11-01","2009-11-02","2009-11-03"
,"2009-11-04","2009-11-05","2009-11-06","2009-11-07","2009-11-08"
,"2009-11-09","2009-11-10","2009-11-11","2009-11-12","2009-11-13"
,"2009-11-14","2009-11-15","2009-11-16","2009-11-17","2009-11-18"
,"2009-11-19","2009-11-20","2009-11-21","2009-11-22","2009-11-23"
,"2009-11-24","2009-11-25","2009-11-26","2009-11-27","2009-11-28"
,"2009-11-29","2009-11-30","2009-12-01","2009-12-02","2009-12-03"
,"2009-12-04","2009-12-05","2009-12-06","2009-12-07","2009-12-08"
,"2009-12-09","2009-12-10","2009-12-11","2009-12-12","2009-12-13"
,"2009-12-14","2009-12-15","2009-12-16"};
string timeArray[24] = {"00:00:00","01:00:00","02:00:00","03:00:00",
"04:00:00","05:00:00","06:00:00","07:00:00",
"08:00:00","09:00:00","10:00:00","11:00:00",
"12:00:00","13:00:00","14:00:00","15:00:00",
"16:00:00","17:00:00","18:00:00","19:00:00",
"20:00:00","21:00:00","22:00:00","23:00:00"};
string timeArray2[24] = {"00:30:00","01:30:00","02:30:00","03:30:00",
"04:30:00","05:30:00","06:30:00","07:30:00",
"08:30:00","09:30:00","10:30:00","11:30:00",
"12:30:00","13:30:00","14:30:00","15:30:00",
"16:30:00","17:30:00","18:30:00","19:30:00",
"20:30:00","21:30:00","22:30:00","23:30:00"};
map<int,int> *widCountMap;
map<int,int>::iterator iter;
string startTime;
string midTime;
string endTime;
//统计40天当中，话题传播 时间上可以改
for(unsigned int day=0;day<30;day++)
{
startTime = dateArray[day] + " " + timeArray[0];
endTime = dateArray[day+1] + " " + timeArray[0];
cout<<"day:"<<day<<endl;
if(day==29)
{
if(!BuildKeyHotWordMap(startTime,endTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"BuildKeyHotWordMap fail");
}
cout<<"KeyWordMap Size:"<<keyWordMap.size()<<endl;
for(unsigned int tao = 1;tao<2;tao++)
{
if(tao == 2)
{
startTime = dateArray[day] + " " + timeArray[tao*6];
midTime = dateArray[day] + " " + timeArray[(tao+1)*6];
endTime = dateArray[day+1] + " " + timeArray[0];
}
else if(tao == 3)
{
startTime = dateArray[day] + " " + timeArray[tao*6];
midTime = dateArray[day+1] + " " + timeArray[0];
endTime = dateArray[day+1] + " " + timeArray[6];
}
else
{
startTime = dateArray[day] + " " + timeArray[tao*6];
midTime = dateArray[day] + " " + timeArray[(tao+1)*6];
endTime = dateArray[day] + " " + timeArray[(tao+2)*6];
}
//获取keyword List
if(!GetKeyWordMap(startTime,midTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"GetKeyWordMap fail");
}
//获取hotwordList
if(!GetHotWordMap(midTime,endTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"GetHotWordMap fail");
}
if(!keyWordList.empty())
{
if(!DynamicSpread(startTime,midTime,endTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"DynamicSpread fail");
return false;
}
//计算预测结果的F1值
if(!CalculateF1())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"CalculateF1 fail");
return false;
}
}
}
}
else
{
if(!BuildGraph::GetInstance()->AddGraph(startTime,endTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"AddGraph fail");
return false;
}
}
}
return true;
}
bool Sampling::DynamicSpread(const string &startTime,const string &midTime,const string &endTime)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"DynamicSpread Start");
if(!BuildGraph::GetInstance()->AddGraph(startTime,midTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"AddGraph fail");
return false;
}
if(!TopicDiscover::GetInstance()->IntervalTopic(startTime,midTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"InervalTopic fail");
return false;
}
if(!AssessUtil::GetInstance()->IntervalAssess(midTime,endTime))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"IntervalAssess fail");
return false;
}
//获取各种字典的指针
sidWTIMap = TopicDiscover::GetInstance()->GetSidWTIMap();
widSTMap = TopicDiscover::GetInstance()->GetWidSTMap();
userGraphMap = BuildGraph::GetInstance()->GetUserGraphMap();
//对比实验
/*
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"start time:"<<TimeUtil::GetInstance()->LocalTimeStr());
if(!TopicDiffuse())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"end time:"<<TimeUtil::GetInstance()->LocalTimeStr());
if(!StatisticUserInfo(userGraphMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"StatisticUserInfo fail");
return false;
}
*/
//方案1：简单随机点抽样
/*
if(!SamplingMethod1())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod1 fail");
return false;
}
*/
//方案2：按照节点度的升序顺序进行点抽样
/*
if(!SamplingMethod2())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod2 fail");
return false;
}
*/
//方案3：按照节点度的降序顺序进行点抽样
/*
if(!SamplingMethod3())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod3 fail");
return false;
}
*/
//方案4：按照拥有话题的权重性从大到小来进行排名，进行抽样
/*
if(!SamplingMethod4())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod4 fail");
return false;
}
*/
//方案5： 根据用户的兴趣相似性，从大到小的顺序来进行用户排名
if(!SamplingMethod5())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod5 fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"DynamicSpread End");
return true;
}
//方案1：简单随机点抽样
bool Sampling::SamplingMethod1()
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod1 start");
UserLLink userhead = (struct UserL *)malloc(sizeof(struct UserL));
userhead->next = NULL;
if(!RandomSortUser(userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"RandomSortUser fail");
return false;
}
if(!SamplingUserHead(userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger(),"SamplingUserHead fail");
return false;
}
if(!PruningUserGraph(userGraphMap,userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"PruningUserGraph fail");
return false;
}
if(!StatisticUserInfo(userGraphMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"StatisticUserInfo fail");
return false;
}
//进行话题传播
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"start time:"<<TimeUtil::GetInstance()->LocalTimeStr());
cout<<"topicDiffuse start"<<endl;
if(!TopicDiffuse())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger(),"end time:"<<TimeUtil::GetInstance()->LocalTimeStr());
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod1 end");
return true;
}
bool Sampling::RandomSortUser(UserLLink userhead)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"RandomSortUser Start");
map<long,UserLink>::iterator userGraphIter;
int userGraphSize = userGraphMap->size();
int pos = 0;
long *uidArray = new long[userGraphSize];
for(unsigned int i=0;i<userGraphSize;i++)
uidArray[i] = -1;
for(userGraphIter = userGraphMap->begin();userGraphIter != userGraphMap->end();userGraphIter++)
{
int increment = 0;
pos = rand()%userGraphSize;
while(uidArray[pos] != -1)
{
pos = (pos+increment)%userGraphSize;
increment++;
}
uidArray[pos] = userGraphIter->first;
}
for(unsigned int i=0;i<userGraphSize;i++)
{
UserL *p = (struct UserL *)malloc(sizeof(struct UserL));
p->uid = uidArray[i];
p->next = userhead->next;
userhead->next = p;
}
delete []uidArray;
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"RandomSortUser End");
return true;
}
//方案2：按照节点度的升序顺序进行点抽样
bool Sampling::SamplingMethod2()
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod2 start");
UserLLink userhead = (struct UserL *)malloc(sizeof(struct UserL));
userhead->next = NULL;
if(!SortUserByDgree(userhead,false))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SortUserByDgree fail");
return false;
}
if(!SamplingUserHead(userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger(),"SamplingUserHead fail");
return false;
}
if(!PruningUserGraph(userGraphMap,userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"PruningUserGraph fail");
return false;
}
if(!StatisticUserInfo(userGraphMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"StatisticUserInfo fail");
return false;
}
//进行话题传播
if(!TopicDiffuse())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod2 end");
return true;
}
//方案3：按照节点度的降序顺序进行点抽样
bool Sampling::SamplingMethod3()
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod2 start");
UserLLink userhead = (struct UserL *)malloc(sizeof(struct UserL));
userhead->next = NULL;
if(!SortUserByDgree(userhead,true))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SortUserByDgree fail");
return false;
}
if(!SamplingUserHead(userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger(),"SamplingUserHead fail");
return false;
}
if(!PruningUserGraph(userGraphMap,userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"PruningUserGraph fail");
return false;
}
if(!StatisticUserInfo(userGraphMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"StatisticUserInfo fail");
return false;
}
//进行话题传播
if(!TopicDiffuse())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod2 end");
return true;
}
bool Sampling::SortUserByDgree(UserLLink userhead,bool BigSign)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SortUserByDgree Start");
map<long,UserLink>::iterator userGraphIter;
map<long,int> uidDegreeMap;
map<long,int>::iterator uidDegreeIter;
for(userGraphIter = userGraphMap->begin();userGraphIter != userGraphMap->end();userGraphIter++)
{
int degree = 0;
UserNode *p = userGraphIter->second->next;
while(p!=NULL)
{
degree++;
p = p->next;
}
uidDegreeMap[userGraphIter->first] = degree;
}
//增序排序
if(BigSign == false)
{
for(uidDegreeIter = uidDegreeMap.begin();uidDegreeIter != uidDegreeMap.end();uidDegreeIter++)
{
UserL *r = userhead;
UserL *s = userhead->next;
UserL *p = (struct UserL *)malloc(sizeof(struct UserL));
p->uid = uidDegreeIter->first ;
p->value = uidDegreeIter->second;
while(s!=NULL)
{
if(s->value > p->value)
{
r->next = p;
p->next = s;
break;
}
r=s;
s=s->next;
}
if(s == NULL)
{
r->next = p;
p->next = s;
}
}
}
else
{
for(uidDegreeIter = uidDegreeMap.begin();uidDegreeIter != uidDegreeMap.end();uidDegreeIter++)
{
UserL *r = userhead;
UserL *s = userhead->next;
UserL *p = (struct UserL *)malloc(sizeof(struct UserL));
p->uid = uidDegreeIter->first ;
p->value = uidDegreeIter->second;
while(s!=NULL)
{
if(s->value < p->value)
{
r->next = p;
p->next = s;
break;
}
r=s;
s=s->next;
}
if(s == NULL)
{
r->next = p;
p->next = s;
}
}
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SortUserByDgree End");
return true;
}
//方案4：按照拥有话题的权重性从大到小来进行排名，进行抽样
bool Sampling::SamplingMethod4()
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod4 Start");
map<int,UserTopicValueLink> widUserTopicMap;
map<long,UserLink>::iterator userGraphIter;
for(unsigned int i=0;i<keyWordList.size();i++)
{
UserTopicValueLink head = (struct UserTopicValue *)malloc(sizeof(struct UserTopicValue));
head->next = NULL;
widUserTopicMap[keyWordList[i]] = head;
}
//初始化uidTopicWordInfoMap
if(!InitUserTopicValueMap(widUserTopicMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"InitUserTopicValueMap fail");
return false;
}
//将每个用户的话题数据按topic value值进行大小排序
if(!SortUserTopicValueMap(widUserTopicMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SortUserTopicValueMap fail");
return false;
}
UserLLink userhead = (struct UserL *)malloc(sizeof(struct UserL));
userhead->next = NULL;
if(!SortUser(widUserTopicMap,userGraphMap,userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"SortUser fail");
return false;
}
if(!SamplingUserHead(userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger(),"SamplingUserHead fail");
return false;
}
if(!PruningUserGraph(userGraphMap,userhead))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"PruningUserGraph fail");
return false;
}
if(!FreeUserTopicValueMap(widUserTopicMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"FreeUserTopicValueMap fail");
return false;
}
if(!StatisticUserInfo(userGraphMap))
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"StatisticUserInfo fail");
return false;
}
//进行话题传播
if(!TopicDiffuse())
{
LOG4CPLUS_ERROR(LogUtil::GetInstance()->GetLogger()
,"TopicDiffuse fail");
return false;
}
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SamplingMethod4 End");
return true;
}
bool Sampling::SortUser(map<int,UserTopicValueLink> &widUserTopicMap,map<long int,UserLink> *userGraphMap,UserLLink userhead)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SortUser Start");
map<long,float> uidValueMap;
map<long,float>::iterator uidValueIter;
map<long int,UserLink>::iterator userGraphIter;
map<int,UserTopicValueLink>::iterator widUserTopicIter;
for(userGraphIter = userGraphMap->begin();userGraphIter != userGraphMap->end();userGraphIter++)
{
uidValueMap[userGraphIter->first] = 0.0;
}
for(widUserTopicIter = widUserTopicMap.begin();widUserTopicIter != widUserTopicMap.end();widUserTopicIter++)
{
UserTopicValueLink head = widUserTopicIter->second;
int score = 200;
head = head->next;
while(head != NULL)
{
uidValueIter = uidValueMap.find(head->uid);
if(uidValueIter != uidValueMap.end())
{
uidValueIter->second += score;
}
else
{
uidValueMap[head->uid] = score;
}
head = head->next;
if(score != 0)
score--;
}
}
for(uidValueIter = uidValueMap.begin();uidValueIter != uidValueMap.end();uidValueIter++)
{
UserL *r = userhead;
UserL *s = userhead->next;
UserL *p = (struct UserL *)malloc(sizeof(struct UserL));
p->uid = uidValueIter->first;
p->value = uidValueIter->second;
float value = uidValueIter->second;
while(s!=NULL)
{
if(s->value < p->value)
{
r->next = p;
p->next = s;
break;
}
r=s;
s=s->next;
}
if(s == NULL)
{
r->next = p;
p->next = s;
}
}
uidValueMap.clear();
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()
,"SortUser End");
return true;
}
bool Sampling::InitUserTopicValueMap(map<int,UserTopicValueLink> &widUserTopicMap)
{
LOG4CPLUS_INFO(LogUtil::GetInstance()->GetLogger()