| RiemStiefel | Tools for Inference, Learning, and Optimization on Stiefel Manifold |
| st.mean | Fréchet Mean on Stiefel Manifold |
| st.runif | Generate Random Samples from Uniform Distribution on Stiefel Manifold |
| st.utestR | Test of Uniformity via Rayleigh Statistic on Stiefel Manifold |
| stopt.SA | Optimization over Stiefel Manifold with Simulated Annealing |