* copy and replace lp_rlp.h

* remove re-initialization of eta

* update ubuntu version from 18 to 20 in R cran tests

* minor improvements (explanatory comments)

---------

Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

* initialize nuts sampler class

* implement the burnin of nuts sampler

* add tests and resolve bugs

* implement e0 estimation in burnin of nuts

* optimize leapfrog

* integrate nuts into the R interface

* document random walk in sample_points.cpp in R interface

* fix burnin for the non-truncated case

* resolve bugs in hmc and nuts pipelines

* improve the preprocess in burin step of nuts

* split large lines in sample_points.cpp

* Add NUTS C++ example and update CMake (GeomScale#29)

* resolve PR comments

* fix minor bug

* fix compiler bug

* fix error in building the C++ examples

* resolve warnings in sample_points

* fix lpsolve cran warning

* fix cran warning on mac

* improve lpsolve cmake for cran check

* fix R warning in mac test

* remove lpsolve header

* resolve PR comments

---------

Co-authored-by: Marios Papachristou <papachristoumarios@gmail.com>
Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

…iance parameter

…ce parameter, add define lp_solve guards to orderpolytope

Remove volesti4dingo branch

…_source

Build only with lp-solve source code, no need for liblpsolve55.so files

* Enable c++17 support in tests and fix saxpy calls

* Fix structure, code style and tests in autodiff

* correcting the includes to point the boost library directory

* modifs to include only the include/ and external/ directories

* modifs

* Update CMakeLists.txt

---------

Co-authored-by: Vissarion Fisikopoulos <fisikop@gmail.com>
Co-authored-by: vfisikop <160006479+vfisikop@users.noreply.github.com>

…rent develop

Remove R interface

Refactor trigonometric_positive_intersect function for hpolytopes

update_position complexity improvement

* improve the implementation of maximum ellipsoid computation

* minor fix in rounding unit-test

* fix file copyrights

* apply termination criterion after transformation in max ellipsoid rounding

* resolve PR comments

---------

Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

…eomScale#310)

* improve the implementation of maximum ellipsoid computation

* minor fix in rounding unit-test

* fix file copyrights

* fix max_ball bug and create new unit test

* fix max_ball bug and create new unit test

* apply termination criterion after transformation in max ellipsoid rounding

* imrpove skinny poly generator's interface

* improve stopping criterion and seed setting

* complete unit tests implementations

* implement Newton method to compute the analytic center

* minor changes

* resolve PR comments

* complete analytic center computation

* resolve conflicts

* minor changes

* minor changes

* minor changes

* improve new unit tests

* resolve PR comments

---------

Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

* Position Nudging after Position Update

* Complexity improvements and Polytope Normalization

* HPolytope Normalization Flag

* Polytope normalization within Walk Constructor

* Alias HPolytope Normalization for Nudging inside Gaussian HMC

* Polytope Normalization in ComputeInner Ball Fixed

* Polytope Normalization Style change

* Nudge in function within Gaussian HMC, and restore Hpoly file

* More efficient Nudge in Process

…ocessing routines (GeomScale#312)

* generalize rounding loop

* support sparse cholesky operator

* complete sparse support in max_inscribed_ball

* complete sparse support in preprocesing

* add sparse tests

* change main rounding function name

* improve explaining comments

* resolve PR comments

* changing the dates in copyrights

* use if constexpr instead of SNIFAE

* update the examples to cpp17

* update to cpp17 order polytope example

* fix templating in mat_computational_operators

* fix templating errors and change header file to mat_computational_operators

---------

Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

* new function is_correlation_matrix

* update example function call

this example calls the is_correlation_matrix() function that is present in include/matrix_operations/EigenvaluesProblems.h

* remove blank line

* remove blank line

* fix spaces, add function parameter

* generalize rounding loop

* support sparse cholesky operator

* complete sparse support in max_inscribed_ball

* complete sparse support in preprocesing

* add sparse tests

* change main rounding function name

* improve explaining comments

* resolve PR comments

* changing the dates in copyrights

* use if constexpr instead of SNIFAE

* update the examples to cpp17

* update to cpp17 order polytope example

* fix templating in mat_computational_operators

* fix templating errors and change header file to mat_computational_operators

* first implementation of the volumetric barrier ellipsoid

* add criterion for step_iter

* restructure code that computes barriers' centers

* remove unused comments

* resolve PR comments

* remove NT typename from max_step()

---------

Co-authored-by: Apostolos Chalkis <apostolos.chalkis@quantagonia.com>

…sian_abw

* Order Polytopes generation

* minor changes for PR

* remove space and comment

* remove bug

* Unit test for Random Order Polytope, and minor changes

* remove comment

* Order Polytopes generation

* minor changes for PR

* remove space and comment

* remove bug

* Unit test for Random Order Polytope, and minor changes

* remove comment

* fix rebase bugs

* remove accidental line