** updates ### 2 June, 2020 - fix a openMP issue for macOS with R 4.0.0
11 Dec, 2019
- fix a convergence rate issue
- reconstruct a safer way to perform multi-threads computing in R environment without affecting other packages
- perform an initialize procedure to determine proper step sizes for optimization for a better performance
- update the status of cited papers
18 Mar, 2019
- fix optimization stability bug when dimension is large
30 Dec, 2018
- optimized dependent functions
- adaptively choose initial step sizes, this could speed up examples one time
11 Oct, 2018
- fix cran comments: to link the preprint from the CRAN webpage, add angle brackets around arxiv reference
- update Github repository link
- add BugReports link
- add Travis-CI icon
- update version number to 1.2
10 Oct, 2018
Resubmission
- omit redundant content in the description field
- add references in the description field
- remove ‘not run’ in function examples
30 Sep, 2018