Visualising a high-dimensional dataset in 2D and 3D using: PCA, TSNE, UMAP and LDA — In this story, we are gonna go through three Dimensionality reduction techniques specifically used for Data Visualization: PCA, t-SNE, LDA and UMAP. We are going to explore them in details using the Sign Language MNIST Dataset, without going in-depth with the maths behind the algorithms. What is Dimensionality Reduction?