- [ ] [6.6.1. The Johnson-Lindenstrauss lemma](https://scikit-learn.org/stable/modules/random_projection.html#the-johnson-lindenstrauss-lemma) - [ ] [6.6.2. Gaussian random projection](https://scikit-learn.org/stable/modules/random_projection.html#gaussian-random-projection) - [ ] [6.6.3. Sparse random projection](https://scikit-learn.org/stable/modules/random_projection.html#sparse-random-projection) - [ ] [6.6.4. Inverse Transform](https://scikit-learn.org/stable/modules/random_projection.html#inverse-transform)
