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#ifndef EPT_POPCON_LOCAL_H
#define EPT_POPCON_LOCAL_H
/** @file
* @author Enrico Zini <enrico@enricozini.org>
* Correlate popcon data with local popcon information
*/
/*
* Copyright (C) 2007 Enrico Zini <enrico@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string>
#include <vector>
#include <map>
namespace ept {
namespace popcon {
class Popcon;
/**
* Access the results of the local daily popcon scan.
*/
class Local
{
protected:
std::map<std::string, float> m_scores;
time_t m_timestamp;
public:
Local(const std::string& file = std::string("/var/log/popularity-contest"));
/// Get the timestamp of the local popcon information
time_t timestamp() const { return m_timestamp; }
/// Return true if this data source has data, false if it's empty
bool hasData() const { return m_timestamp != 0; }
/**
* Return the local score of the package
*/
float score(const std::string& pkg) const;
/**
* Return the TFIDF score of the package computed against the popcon
* information.
*
* The TFIDF score is high when a package is representative of this system,
* that is, it is used in this system and not much used in other systems.
*/
float tfidf(const Popcon& popcon, const std::string& pkg) const;
/**
* Read the local popcon vote and return the list of packages and their
* local scores, sorted by ascending score.
*/
std::vector< std::pair<std::string, float> > scores() const;
/**
* Read the local popcon vote and return the list of packages and their
* TFIDF scores computed against the popcon information.
*
* The packages will be sorted by ascending score.
*/
std::vector< std::pair<std::string, float> > tfidf(const Popcon& popcon) const;
};
}
}
// vim:set ts=4 sw=4:
#endif
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