Merge pull request #12 from gjbex/development

Add slides on UMAP

Author: gjbex

clustering.pptx

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+# References
+
+# High-dimensional spaces
+
+* [Curse of dimensionality](https://en.wikipedia.org/wiki/Curse_of_dimensionality)
+* [Counter-intuitive facts](https://marckhoury.github.io/blog/counterintuitive-properties-of-high-dimensional-space/)
+
+# UMAP
+
+* [How it works](https://umap-learn.readthedocs.io/en/latest/how_umap_works.html)
+* [Hyperparameter tuning and comparison to t-SNE](https://pair-code.github.io/understanding-umap/#:~:text=UMAP%2C%20at%20its%20core%2C%20works,as%20structurally%20similar%20as%20possible.)