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#include <stdio.h>
#include "../vowpalwabbit/vw.h"
#include "../vowpalwabbit/ezexample.h"
#include <boost/thread/thread.hpp>
using namespace std;
int runcount = 100;
class Worker
{
public:
Worker(vw & instance, string & vw_init_string, vector<double> & ref)
: m_vw(instance)
, m_referenceValues(ref)
, vw_init_string(vw_init_string)
{ }
void operator()()
{
m_vw_parser = VW::initialize(vw_init_string);
if (m_vw_parser == NULL) {
cerr << "cannot initialize vw parser" << endl;
exit(-1);
}
int errorCount = 0;
for (int i = 0; i < runcount; ++i)
{
vector<double>::iterator it = m_referenceValues.begin();
ezexample ex(&m_vw, false, m_vw_parser);
ex(vw_namespace('s'))
("p^the_man")
("w^the")
("w^man")
(vw_namespace('t'))
("p^le_homme")
("w^le")
("w^homme");
ex.set_label("1");
if (*it != ex()) { cerr << "fail!" << endl; ++errorCount; }
//if (*it != pred) { cerr << "fail!" << endl; ++errorCount; }
//VW::finish_example(m_vw, vec2);
++it;
--ex; // remove the most recent namespace
ex(vw_namespace('t'))
("p^un_homme")
("w^un")
("w^homme");
ex.set_label("1");
if (*it != ex()) { cerr << "fail!" << endl; ++errorCount; }
++it;
--ex; // remove the most recent namespace
// add features with explicit ns
ex('t', "p^un_homme")
('t', "w^un")
('t', "w^homme");
ex.set_label("1");
if (*it != ex()) { cerr << "fail!" << endl; ++errorCount; }
++it;
//cout << "."; cout.flush();
}
cerr << "error count = " << errorCount << endl;
VW::finish(*m_vw_parser);
m_vw_parser = NULL;
}
private:
vw & m_vw;
vw * m_vw_parser;
vector<double> & m_referenceValues;
string & vw_init_string;
};
int main(int argc, char *argv[])
{
if (argc != 3)
{
cerr << "need two args: threadcount runcount" << endl;
return 1;
}
int threadcount = atoi(argv[1]);
runcount = atoi(argv[2]);
// INITIALIZE WITH WHATEVER YOU WOULD PUT ON THE VW COMMAND LINE -- THIS READS IN A MODEL FROM train.w
string vw_init_string_all = "-t --ldf_override s --quiet -q st --noconstant --hash all -i train.w";
string vw_init_string_parser = "-t --ldf_override s --quiet -q st --noconstant --hash all --noop"; // this needs to have enough arguments to get the parser right
vw*vw = VW::initialize(vw_init_string_all);
vector<double> results;
// HAL'S SPIFFY INTERFACE USING C++ CRAZINESS
{
ezexample ex(vw, false);
ex(vw_namespace('s'))
("p^the_man")
("w^the")
("w^man")
(vw_namespace('t'))
("p^le_homme")
("w^le")
("w^homme");
ex.set_label("1");
results.push_back(ex.predict_partial());
cerr << "should be near zero = " << ex.predict_partial() << endl;
--ex; // remove the most recent namespace
ex(vw_namespace('t'))
("p^un_homme")
("w^un")
("w^homme");
ex.set_label("1");
results.push_back(ex.predict_partial());
cerr << "should be near one = " << ex.predict_partial() << endl;
--ex; // remove the most recent namespace
// add features with explicit ns
ex('t', "p^un_homme")
('t', "w^un")
('t', "w^homme");
ex.set_label("1");
results.push_back(ex.predict_partial());
cerr << "should be near one = " << ex.predict_partial() << endl;
}
if (threadcount == 0)
{
Worker w(*vw, vw_init_string_parser, results);
w();
}
else
{
boost::thread_group tg;
for (int t = 0; t < threadcount; ++t)
{
cerr << "starting thread " << t << endl;
boost::thread * pt = tg.create_thread(Worker(*vw, vw_init_string_parser, results));
}
tg.join_all();
cerr << "finished!" << endl;
}
// AND FINISH UP
VW::finish(*vw);
}
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