int main(int argc, char *argv[])
{
Graph::vertex user = 0;
if(argc > 1){
user = atoi(argv[1]);
}
ifstream in, fin;
int *userId = new int[N];
int *locationId = new int[N];
int *mapbacklocId = new int[N];
string *time = new string[N];
float *latitude = new float[N];
float *longtitude = new float[N];
int *numofUser = new int[N];
int *numofLocation = new int [N];
vector<Point*> position;
int n = 0, maxNumberofUserLocations = 0, maxNumberofLocationUsers = 0, maxUserId = 0, maxLocationId = 0;
int lengthofNewlocaitonId = 0, mapedLocationId = 0;
in.open("Gowalla_totalCheckins_small.txt");
while(!in.eof()){
in>>userId[n]>>time[n]>>latitude[n]>>longtitude[n]>>locationId[n];
if(locationId[n]==0){
break;
}
// map locationId to newId
mapedLocationId = mapLocationId(mapbacklocId, lengthofNewlocaitonId, locationId[n]);
if(mapedLocationId == -1){
mapbacklocId[lengthofNewlocaitonId] = locationId[n];
mapedLocationId = lengthofNewlocaitonId;
Point *p = new Point(2);
p->v[0] = latitude[n];
p->v[1] = longtitude[n];
if(p->v[0]==0&& p->v[1]==0) cout<<n<<endl;
position.push_back(p);
++ lengthofNewlocaitonId;
}
++ numofUser[userId[n]];
++ numofLocation[mapedLocationId];
if(mapedLocationId > maxLocationId) maxLocationId = mapedLocationId;
if(userId[n]>maxUserId) maxUserId = userId[n];
if(numofUser[userId[n]] > maxNumberofUserLocations) maxNumberofUserLocations = numofUser[userId[n]];
if(numofLocation[mapedLocationId] > maxNumberofLocationUsers){
maxNumberofLocationUsers = numofLocation[mapedLocationId];
// cout<<maxNumberofLocation<<" "<<locationId[n]<<" "<<n<<endl;
}
++n;
}
in.close();
//cout<<maxUserId<<" "<<maxLocationId<<endl;
//cout<<maxNumberofUserLocations<<" "<<maxNumberofLocationUsers<<endl;
int **locationUserList = new int*[maxLocationId+1];
int **userLocationList = new int*[maxUserId+1];
for(int i = 0; i <= maxLocationId; ++i){
locationUserList[i] = new int[maxNumberofLocationUsers+1];
locationUserList[i][0] = 0;
}
for(int i = 0; i <= maxUserId; ++i){
userLocationList[i] = new int[maxNumberofLocationUsers+1];
userLocationList[i][0] = 0;
}
for(int i = 0; i < n; ++i){
mapedLocationId = mapLocationId(mapbacklocId, lengthofNewlocaitonId,locationId[i]);
++ userLocationList[userId[i]][0];
userLocationList[userId[i]][userLocationList[userId[i]][0]] = mapedLocationId;
++ locationUserList[mapedLocationId][0];
// if(maxNumberofLocationUsers - locationUserList[mapedLocationId][0]<0) cout<<i<<endl;
locationUserList[mapedLocationId][locationUserList[mapedLocationId][0]] = userId[i];
}
//cout<<"ddddddddddddddddd"<<endl;
Graph G;
int source, target;
fin.open("Gowalla_edges.txt");
while(!fin.eof()){
fin>>source>>target;
G.insert_edge(source, target);
G.insert_edge(target, source);
}
Graph::vertex_set neighbors = G.out_neighbors(user);
// location recommendation
int *recommendLocation = new int[maxLocationId+1];
memset(recommendLocation, 0, (maxLocationId+1)*sizeof(int));
for(Graph::vertex_set::const_iterator t=neighbors.begin(); t!=neighbors.end(); ++t){
//cout<< *t<<" ";
if(*t > maxUserId) continue;
for(int i = 1; i <= userLocationList[*t][0]; ++i){
if(find(userLocationList[user], userLocationList[*t][i]) == 0){
++ recommendLocation[userLocationList[*t][i]];
}
}
}
cout<<endl;
cout<<"recommend locations for user "<<user<<": "<<endl;
for(int i = 0; i <= maxLocationId; ++i){
if(recommendLocation[i] > 0){
cout<<mapbacklocId[i]<<" ";
}
}
cout<<endl;
//friends recommendation
int *recommendFriends = new int[maxUserId+1];
memset(recommendFriends, 0, (maxUserId+1)*sizeof(int));
for(Graph::vertex_set::const_iterator t=neighbors.begin(); t!=neighbors.end(); ++t){
Graph::vertex_set nextNeighbors = G.out_neighbors(*t);
for(Graph::vertex_set::const_iterator r=nextNeighbors.begin(); r!=nextNeighbors.end(); ++r){
if(neighbors.find(*r)==neighbors.end()){
++ recommendFriends[*r];
}
}
}
cout<<endl;
cout<<"recommend friends for user "<<user<<": "<<endl;
for(int i = 0; i <= maxUserId; ++i){
if(recommendFriends[i] > 10 && i != user){
cout<<i<<" ";
}
}
cout<<endl;
// group computation
int *kmeansLabel = Kmeans(position, 2, GROUP_SIZE, 0.1);
ofstream out;
out.open("result.txt");
for(int i = 0; i < lengthofNewlocaitonId; ++i){
out<<position[i]->v[0]<<" "<<position[i]->v[1]<<" "<<kmeansLabel[i]<<endl;
}
out.close();
int *userList = new int[N];
memset(userList, 0, N*sizeof(int));
cout<<endl;
cout<<"clustering for find important user:"******"clusterId userId degree"<<endl;
for(int k = 1; k <= GROUP_SIZE; ++k){
for(int i = 0; i < lengthofNewlocaitonId; ++i){
if(kmeansLabel[i] == k){
for(int j = 1; j <= locationUserList[i][0]; ++j){
if(find(userList, locationUserList[i][j]) == 0){
++ userList[0];
userList[userList[0]] = locationUserList[i][j];
}
}
}
}
int max_degree = -1, max_degree_user = -1;
int max_checkin = -1, max_checkin_user = -1;
for(int i = 1; i <= userList[0]; ++i){
int degree = G.out_degree(userList[i]);
if(degree > max_degree){
max_degree = degree;
max_degree_user = userList[i];
}
}
cout<<k<<" "<<max_degree_user<<" "<<max_degree<<" "<<endl;
}
delete [] userList;
delete [] recommendLocation;
delete [] userId;
delete [] locationId;
delete [] mapbacklocId;
delete [] time;
delete [] latitude;
delete [] longtitude;
delete [] numofUser;
delete [] numofLocation;
delete [] kmeansLabel;
for(int i = 0; i <= maxLocationId; ++i){
delete [] locationUserList[i];
}
delete [] locationUserList;
return 0;
}
std::vector<std::pair<std::vector<double>, int> > generateFeatures(const tGraph<T> &g, const tGraph<T> &gPos, const tGraph<T> &gNeg, const std::vector<std::pair<std::pair<T, T>, int> > &edges) {
std::vector<std::pair<std::vector<double>, int> > result;
int count = 0;
int fullSize = edges.size();
int step = fullSize / 100;
for (std::vector<std::pair<std::pair<unsigned int, unsigned int>, int> >::const_iterator i = edges.begin(); i != edges.end(); ++i) {
if (count % step == 0) {
std::cout << (count * 100) / fullSize << "% are processed" << std::endl;
}
++count;
std::vector<double> tmp;
std::vector<unsigned int> inter;
int u = i->first.first;
int v = i->first.second;
// degree features
tmp.push_back(gPos.in_degree(u));
tmp.push_back(gNeg.in_degree(v));
tmp.push_back(gPos.out_degree(u));
tmp.push_back(gNeg.out_degree(v));
Graph::vertex_set uN = g.out_neighbors(u);
Graph::vertex_set uIn = g.in_neighbors(u);
Graph::vertex_set vN = g.out_neighbors(v);
Graph::vertex_set vIn = g.in_neighbors(v);
uN.insert(uIn.begin(), uIn.end());
vN.insert(vIn.begin(), vIn.end());
std::set_intersection(uN.begin(), uN.end(), vN.begin(), vN.end(), std::inserter(inter, inter.begin()));
tmp.push_back(inter.size());
tmp.push_back(g.out_degree(u));
tmp.push_back(g.in_degree(v));
// triad features
std::vector<double> triad(16, 0);
for (auto w : inter) {
if (g.includes_edge(u, w)) {
if (g.includes_edge(v, w)) {
if (gPos.includes_edge(u, w)) {
if (gPos.includes_edge(v, w)) {
++triad[0];
} else if (gNeg.includes_edge(v, w)) {
++triad[1];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (gNeg.includes_edge(u, w)) {
if (gPos.includes_edge(v, w)) {
++triad[2];
} else if (gNeg.includes_edge(v, w)) {
++triad[3];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (g.includes_edge(w, v)) {
if (gPos.includes_edge(u, w)) {
if (gPos.includes_edge(w, v)) {
++triad[4];
} else if (gNeg.includes_edge(w, v)) {
++triad[5];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (gNeg.includes_edge(u, w)) {
if (gPos.includes_edge(w, v)) {
++triad[6];
} else if (gNeg.includes_edge(w, v)) {
++triad[7];
}
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
}
} else if (g.includes_edge(w, u)) {
if (g.includes_edge(v, w)) {
if (gPos.includes_edge(w, u)) {
if (gPos.includes_edge(v, w)) {
++triad[8];
} else if (gNeg.includes_edge(v, w)) {
++triad[9];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (gNeg.includes_edge(w, u)) {
if (gPos.includes_edge(v, w)) {
++triad[10];
} else if (gNeg.includes_edge(v, w)) {
++triad[11];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (g.includes_edge(w, v)) {
if (gPos.includes_edge(w, u)) {
if (gPos.includes_edge(w, v)) {
++triad[12];
} else if (gNeg.includes_edge(w, v)) {
++triad[13];
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
} else if (gNeg.includes_edge(w, u)) {
if (gPos.includes_edge(w, v)) {
++triad[14];
} else if (gNeg.includes_edge(w, v)) {
++triad[15];
}
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
}
} else {
std::cout << "Error: incorrect graph." << std::endl;
}
}
tmp.insert(tmp.end(), triad.begin(), triad.end());
result.push_back(std::make_pair(tmp, i->second));
}
std::cout << "100% are processed" << std::endl;
return result;
}
