SphereOPtimzie provides a simple tool for numerical optimization on the unit sphere. This is achieved by combining the spherical coordinating transformation with L-BFGS-B optimization algorithm. This optimization scheme is implemented in https://doi.org/10.1016/j.jspi.2020.07.001.
SphereOptimize
from Github:devtools::install_github("xieyj17/SphereOptimize")
SphereOptimize
from CRAN:install.packages("SphereOptimize")
See https://CRAN.R-project.org/package=SphereOptimize for more details.
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