コード例 #1
0
		void CalendarDateInterfacePage::Display(
			std::ostream& stream,
			boost::shared_ptr<const Webpage> page,
			const server::Request& request,
			const util::ParametersMap& templateParametersMap,
			boost::gregorian::date value,
			bool isActive
		){
			ParametersMap pm(templateParametersMap);

			pm.insert(DATA_DAY, value.day());
			pm.insert(DATA_MONTH, value.month());
			pm.insert(DATA_YEAR, value.year());
			pm.insert(DATA_WEEK_DAY, value.day_of_week());
			pm.insert(DATA_IS_ACTIVE, isActive);

			page->display(stream, request, pm);
		}
コード例 #2
0
ファイル: forecast.cpp プロジェクト: ulrichard/flightpred
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8/////////9/////////A
void forecast::prediction_run(const string &site_name, const size_t pred_days)
{
    report(INFO) << "Running forecast for : " << site_name;
    try
    {
        pqxx::transaction<> trans1(flightpred_db::get_conn(), "flight prediction");
        const bgreg::date today(boost::posix_time::second_clock::universal_time().date());

        std::stringstream sstr;
        sstr << "SELECT pred_site_id FROM pred_sites WHERE site_name='" << site_name << "'";
        pqxx::result res = trans1.exec(sstr.str());
        if(!res.size())
            throw std::invalid_argument("site not found: " + site_name);
        size_t pred_site_id;
        res[0]["pred_site_id"].to(pred_site_id);
        trans1.commit();

        features_weather weather(false);
        //load the configuration with the best score
        solution_manager solmgr(site_name);
        std::auto_ptr<solution_config> sol = solmgr.load_best_solution(true, 0.0);
        report(VERBOSE) << "Loaded solution  config : " << sol->get_solution_id() << " : " << sol->get_algorithm_name(true);

        // get the feature descriptions of the weather data
        const set<features_weather::feat_desc> &features = sol->get_weather_feature_desc();
        report(VERBOSE) << "Loaded " << features.size() << " features.";

        for(size_t j=0; j<pred_days; ++j)
        {
            const bgreg::date day(today + bgreg::days(j));

            const vector<double> valweather = weather.get_features(features, day, true);
            assert(valweather.size() == features.size());

            // put together the values to feed to the svm
            vector<double> features;
            features.push_back(day.year());
            features.push_back(day.day_of_year());
            features.push_back(day.day_of_week());
            std::copy(valweather.begin(), valweather.end(), std::back_inserter(features));

            // let the machine make it's (educated) guesses
            map<string, double> predval;
            BOOST_FOREACH(const string& prednam, flightpred_globals::pred_values)
            {
                double val = sol->get_decision_function(prednam)->eval(features);
                if(isnan(val) || val < 0.0)
                   val = 0.0;
                predval[prednam] = val;
            }

            // normalize (some flying sites have no values between 0.0 and say 2.3 or so. In this step we subtract these minimal values.)
            pqxx::transaction<> transl(flightpred_db::get_conn(), "flight prediction");
            BOOST_FOREACH(const string& prednam, flightpred_globals::pred_values)
            {
                sstr.str("");
                sstr << "SELECT " << prednam << " FROM flight_pred "
                     << "WHERE pred_site_id = " << pred_site_id << " AND " << prednam << " > 0.0 AND train_sol_id = " << sol->get_solution_id()
                     << " ORDER BY " << prednam << " ASC LIMIT 32";
                res = transl.exec(sstr.str());

                if(res.size() >= 30)
                {
                    double smallest = 0.0;
                    res[0][0].to(smallest);
                    predval[prednam] -= smallest;
                }
            }

            sstr.str("");
            sstr << "INSERT INTO flight_pred (pred_site_id, train_sol_id,";
            std::copy(flightpred_globals::pred_values.begin(), flightpred_globals::pred_values.end(), std::ostream_iterator<string>(sstr, ", "));
            sstr << "calculated, pred_day) VALUES (" << pred_site_id << ", " << sol->get_solution_id() << ", ";

            BOOST_FOREACH(const string& predname, flightpred_globals::pred_values)
            {
                double val = predval[predname];
                sstr << val << ", ";
                report(INFO) << site_name << " " << bgreg::to_iso_extended_string(day) << " "
                             << predname << " " << val << std::endl;
            }