cross_validation.py
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#!/usr/bin/env python
"""
CrossValidation - python module for classes and methods related to
recommenders evaluation.
"""
__author__ = "Tassia Camoes Araujo <tassia@gmail.com>"
__copyright__ = "Copyright (C) 2011 Tassia Camoes Araujo"
__license__ = """
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 3 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, see <http://www.gnu.org/licenses/>.
"""
import os
import sys
sys.path.insert(0,'../')
import logging
import datetime
from config import Config
from evaluation import CrossValidation, Precision, Recall, F_score, FPR, Accuracy
from recommender import Recommender
from user import RandomPopcon,LocalSystem,PopconSystem
if __name__ == '__main__':
cfg = Config()
rec = Recommender(cfg)
#user = LocalSystem()
#user = RandomPopcon(cfg.popcon_dir)
#user = RandomPopcon(cfg.popcon_dir,os.path.join(cfg.filters_dir,"desktopapps"))
user = PopconSystem(os.path.expanduser("~/.app-recommender/popcon-entries/00/0001166d0737c6dffb083071e5ee69f5"))
user.filter_pkg_profile(os.path.join(cfg.filters_dir,"desktopapps"))
user.maximal_pkg_profile()
begin_time = datetime.datetime.now()
metrics = []
metrics.append(Precision())
metrics.append(Recall())
metrics.append(F_score(0.5))
metrics.append(Accuracy())
metrics.append(FPR())
validation = CrossValidation(0.9,20,rec,metrics,0.005)
validation.run(user)
print validation
end_time = datetime.datetime.now()
delta = end_time - begin_time
logging.info("Cross-validation for user %s" % user.user_id)
logging.info("Recommender strategy: %s" % rec.strategy.description)
logging.debug("Cross-validation started at %s" % begin_time)
logging.debug("Cross-validation completed at %s" % end_time)
logging.info("Time elapsed: %d seconds." % delta.seconds)