6. Dimensionality reduction of scRNA-seq data

[@dokim2242]

PCA : 5:31 tSNE : 17:05 UMAP : 32:42

[@ChipsterTutorials]

Thank you! Added these to the video description as well!

[@pl1840]

Concerning the slide at 28:18, I would like to point out that the only stochastic element in tSNE is the initialisation of the low-dimensional embedding: even the accelerated BH algorithm is not stochastic. In other words, tSNE is just as stochastic as UMAP: the result will be the same given the same initialisation.