Source code for cornac.datasets.epinions

# Copyright 2018 The Cornac Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
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# ============================================================================
"""Link to the dataset: http://www.trustlet.org/downloaded_epinions.html"""

import os
from typing import List

from ..data import Reader
from ..utils import cache
from ..utils.download import get_cache_path


def _get_cache_dir():
    cache_dir = get_cache_path('epinions')[0]
    if not os.path.exists(cache_dir):
        os.makedirs(cache_dir)
    return cache_dir


[docs]def load_data(reader: Reader = None) -> List: """Load the rating feedback Parameters ---------- reader: `obj:cornac.data.Reader`, default: None Reader object used to read the data. Returns ------- data: array-like Data in the form of a list of tuples (user, item, rating). """ fpath = cache(url='http://www.trustlet.org/datasets/downloaded_epinions/ratings_data.txt.bz2', unzip=True, relative_path='ratings_data.txt', cache_dir=_get_cache_dir()) reader = Reader() if reader is None else reader return reader.read(fpath, sep=' ')
[docs]def load_trust(reader: Reader = None) -> List: """Load the trust data Parameters ---------- reader: `obj:cornac.data.Reader`, default: None Reader object used to read the data. Returns ------- data: array-like Data in the form of a list of tuples (source_user, target_item, trust_value). """ fpath = cache(url='http://www.trustlet.org/datasets/downloaded_epinions/trust_data.txt.bz2', unzip=True, relative_path='trust_data.txt', cache_dir=_get_cache_dir()) reader = Reader() if reader is None else reader return reader.read(fpath, sep=' ')