void
saveSvmLight(const char *fname, docs_t &docs, intvector_t &ids)
{
cerr << "# Writing " << fname << "." << endl;
ogzstream f;
f.open(fname);
if (! f.good())
{
cerr << "ERROR: cannot open " << fname << " for writing." << endl;
::exit(10);
}
for(int i=0; i<(int)ids.size(); i++)
{
int id = ids[i];
bool y = classes[id];
SVector s = docs[id];
int p = s.npairs();
if (p <= 0)
{
cerr << "ERROR: empty vector " << id << "." << endl;
::exit(10);
}
f << ((y) ? +1 : -1);
f << s;
if (! f.good())
{
cerr << "ERROR: writing " << fname << " for writing." << endl;
::exit(10);
}
}
cerr << "# Done. Wrote " << ids.size() << " examples." << endl;
}
void
saveBinary(const char *fname, docs_t &docs, intvector_t &ids)
{
cerr << "# Writing " << fname << "." << endl;
ogzstream f;
f.open(fname);
if (! f.good())
{
cerr << "ERROR: cannot open " << fname << " for writing." << endl;
::exit(10);
}
int pcount = 0;
int ncount = 0;
int npairs = 0;
for(int i=0; i<(int)ids.size(); i++)
{
int id = ids[i];
bool y = classes[id];
if (y)
pcount += 1;
else
ncount += 1;
SVector s = docs[id];
int p = s.npairs();
npairs += p;
if (p <= 0)
{
cerr << "ERROR: empty vector " << id << "." << endl;
::exit(10);
}
f.put( y ? 1 : 0);
s.save(f);
if (! f.good())
{
cerr << "ERROR: writing " << fname << " for writing." << endl;
::exit(10);
}
}
cerr << "# Done. Wrote " << ids.size() << " examples." << endl;
cerr << "# with " << npairs << " pairs, "
<< pcount << " positives, and "
<< ncount << " negatives." << endl;
}
void
readDocs(const char *fname, docs_t &docs, bool freezedico=false)
{
cerr << "# Reading " << fname << endl;
igzstream f;
f.open(fname);
if (! f.good()) {
cerr << "ERROR: cannot open file " << fname << endl;
::exit(10);
}
string token;
f >> token;
if (token != ".I")
{
cerr << "ERROR: Cannot read initial .I in " << fname << endl;
::exit(10);
}
int id = 0;
int count = 0;
while(f.good())
{
f >> id >> token;
count += 1;
if (! f.good() || token != ".W")
{
cerr << "ERROR (" << id << "): "
<< "Cannot read \"<id> .W\"." << endl;
::exit(10);
}
int wid = -1;
string otoken;
SVector s;
for(;;)
{
f >> token;
if (!f.good() || token == ".I")
break;
if (token != otoken)
{
dico_t::iterator it = dico.find(token);
if (it != dico.end())
wid = it->second;
else if (freezedico)
continue;
else
{
wid = dico.size() + 1;
dico[token] = wid;
}
otoken = token;
}
s.set(wid, s.get(wid)+1.0);
}
if (s.npairs() <= 0)
{
cerr << "ERROR (" << id << "): "
<< "Empty vector " << id << "?" << endl;
::exit(10);
}
docs[id] = s;
}
if (!f.eof())
{
cerr << "ERROR (" << id << "): "
<< "Failed reading words" << endl;
::exit(10);
}
cerr << "# Done reading " << count << " documents." << endl;
}
