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# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack.package import *
class RAls(RPackage):
"""Multivariate Curve Resolution Alternating Least Squares (MCR-ALS).
Alternating least squares is often used to resolve components contributing
to data with a bilinear structure; the basic technique may be extended to
alternating constrained least squares. Commonly applied constraints
include unimodality, non-negativity, and normalization of components.
Several data matrices may be decomposed simultaneously by assuming that one
of the two matrices in the bilinear decomposition is shared between
datasets."""
cran = "ALS"
version('0.0.6', sha256='ca90d27115ae9e476967f521bf6935723e410a3bf92477e7570e14bfd3b099eb')
depends_on('r@2.10:', type=('build', 'run'))
depends_on('r-iso', type=('build', 'run'))
depends_on('r-nnls@1.1:', type=('build', 'run'))
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