Here is the "interactive review" question for homework 4 that I promised.
"List five nontrivial ideas you came to appreciate during the course of this semester"
(You cannot list generic statements like "I thought pagerank was kewl". Here is an example:
The deep connection between feature selection and dimensionality reduction: By
understanding LSI, LDA and MI based feature selection, I was able to see the deep
connections between dimensionality reduction (which works without taking any particular
classification task into account) and feature selection (which typically take the classification task