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ttcg  

Three-Term Conjugate Gradient for Unconstrained Optimization
View on CRAN: Click here


Download and install ttcg package within the R console
Install from CRAN:
install.packages("ttcg")

Install from Github:
library("remotes")
install_github("cran/ttcg")

Install by package version:
library("remotes")
install_version("ttcg", "1.0.1")



Attach the package and use:
library("ttcg")
Maintained by
Hao Chi Kiang
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2021-10-05
Latest Update: 2021-10-05
Description:
Some accelerated three-term conjugate gradient algorithms implemented purely in R with the same user interface as optim(). The search directions and acceleration scheme are described in Andrei, N. (2013) <doi:10.1016/j.amc.2012.11.097>, Andrei, N. (2013) <doi:10.1016/j.cam.2012.10.002>, and Andrei, N (2015) <doi:10.1007/s11075-014-9845-9>. Line search is done by a hybrid algorithm incorporating the ideas in Oliveia and Takahashi (2020) <doi:10.1145/3423597> and More and Thuente (1994) <doi:10.1145/192115.192132>.
How to cite:
Hao Chi Kiang (2021). ttcg: Three-Term Conjugate Gradient for Unconstrained Optimization. R package version 1.0.1, https://cran.r-project.org/web/packages/ttcg. Accessed 25 Jun. 2026.
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Complete documentation for ttcg
Functions, R codes and Examples using the ttcg R package
Some associated functions: ttcg-package . ttcg . 
Some associated R codes: main.R .  Full ttcg package functions and examples
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