app_recommender.py
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#!/usr/bin/python
# AppRecommender - A GNU/Linux application recommender
#
# Copyright (C) 2010 Tassia Camoes <tassia@gmail.com>
#
# 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
from config import *
from data import *
from evaluation import *
from similarity_measure import *
from recommender import *
from strategy import *
from user import *
# Setup configuration
#DB_PATH = "/var/lib/debtags/package-tags"
#INDEX_PATH = os.path.expanduser("~/.app-recommender/debtags_index")
#
#XAPIANDBPATH = os.environ.get("AXI_DB_PATH", "/var/lib/apt-xapian-index")
#XAPIANDB = XAPIANDBPATH + "/index"
#XAPIANDBVALUES = XAPIANDBPATH + "/values"
def set_up_logger(cfg):
log_format = '%(asctime)s AppRecommender %(levelname)s: %(message)s'
log_level = logging.INFO
if cfg.debug is 1:
log_level = logging.DEBUG
logging.basicConfig(level=log_level,format=log_format,filename=cfg.output)
console = logging.StreamHandler(sys.stdout)
console.setLevel(log_level)
formatter = logging.Formatter('%(levelname)s: %(message)s')
console.setFormatter(formatter)
logging.getLogger('').addHandler(console)
def set_up_recommender(cfg):
# reindex = 0
# axi = 0
# if len(sys.argv) == 2:
# if sys.argv[1] == "axi":
# axi = 1
# else:
# DB_PATH = sys.argv[1]
# reindex = 1
# elif len(sys.argv) > 2:
# print >> sys.stderr, ("Usage: %s [PATH_TO_DEBTAGS_DATABASE]" %
# sys.argv[0])
# sys.exit(1)
reindex = 0
if cfg.strategy == "cta":
axi_db = xapian.Database(cfg.axi)
app_rec = Recommender(axi_db)
app_rec.set_strategy(AxiContentBasedStrategy())
elif cfg.strategy == "ct":
debtags_db = DebtagsDB(cfg.tags_db)
if not debtags_db.load():
print >> sys.stderr,("Could not load DebtagsDB from %s." % DB_PATH)
sys.exit(1)
debtags_index = DebtagsIndex(os.path.expanduser(cfg.tags_index))
debtags_index.load(debtags_db,reindex)
app_rec = Recommender(debtags_index)
app_rec.set_strategy(ContentBasedStrategy())
return app_rec
def cross_validation(recommender):
metrics = []
metrics.append(Precision())
metrics.append(Recall())
validation = CrossValidation(0.1,10,recommender,metrics)
validation.run(user)
if __name__ == '__main__':
cfg = Config()
cfg.load_options()
set_up_logger(cfg)
rec = set_up_recommender(cfg)
user = LocalSystem()
result = rec.get_recommendation(user)
result.print_result()
cross_validation(rec)