Source code for gemseo.mlearning.transform.dimension_reduction.dimension_reduction
# -*- coding: utf-8 -*-
# Copyright 2021 IRT Saint Exupéry, https://www.irt-saintexupery.com
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License version 3 as published by the Free Software Foundation.
#
# 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# Contributors:
# INITIAL AUTHORS - initial API and implementation and/or initial
# documentation
# :author: Matthias De Lozzo, Syver Doving Agdestein
# OTHER AUTHORS - MACROSCOPIC CHANGES
"""
Dimension reduction
===================
The :class:`.DimensionReduction` class implements the concept of dimension
reduction.
.. seealso::
:mod:`~gemseo.mlearning.transform.dimension_reduction.pca`
"""
from __future__ import absolute_import, division, unicode_literals
from future import standard_library
from gemseo.mlearning.transform.transformer import Transformer
standard_library.install_aliases()
[docs]class DimensionReduction(Transformer):
""" Dimension reduction. """
def __init__(self, name="DimensionReduction", n_components=5, **parameters):
"""Constructor.
:param str name: name of the scaler.
:param int n_components: number of components. Default: 5.
:param parameters: parameters for the dimension reduction algorithm.
"""
super(DimensionReduction, self).__init__(
name, n_components=n_components, **parameters
)
[docs] def fit(self, data):
"""Fit dimension reduction algorithm to data.
:param ndarray data: data to be fitted.
"""
raise NotImplementedError
@property
def n_components(self):
""" Number of components """
return self.parameters["n_components"]