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Vectors, projection and PCA
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Vector projection
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* `algebra of sums`_;
* `vectors and dot products`_;
* `vector projection`_.

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numpy dot and outer
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* :doc:`dot_and_outer`.

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Principal component analysis
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* background: `introduction to Principal Component Analysis`_;
* exercise: :doc:`pca_exercise`.

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Deadline
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You should have chosen a project mentor by the end of this week - see
:doc:`projects`.

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Reading and homework for next week
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* finish PCA exercise, with some github practice (see below);
* Huettel chapter 7 - :cite:`huettel2014functional`;
* continue the outlier competition - for October 10th;
* do the :doc:`github_pca_homework`.