Source code for cornac.datasets.filmtrust

# 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
# limitations under the License.
# ============================================================================
"""
Source: https://www.librec.net/datasets.html
"""
import os
from typing import List

from ..utils import cache
from ..data import Reader

from ..utils.download import get_cache_path


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


[docs]def load_feedback(reader: Reader = None) -> List: """Load the user-item ratings, scale: [0.5,4] 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='https://www.librec.net/datasets/filmtrust.zip', unzip=True, cache_dir=_get_cache_dir(), relative_path='ratings.txt') reader = Reader() if reader is None else reader return reader.read(fpath, sep=' ')
[docs]def load_trust(reader: Reader = None) -> List: """Load the user-user trust information (undirected network) 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, user, 1). """ fpath = cache(url='https://www.librec.net/datasets/filmtrust.zip', unzip=True, cache_dir=_get_cache_dir(),relative_path='trust.txt') reader = Reader() if reader is None else reader return reader.read(fpath, sep=' ')