Throw away the keys: Easy, Minimal Perfect Hashing
I know how to make and sell software online, and I can share my tips with you. Email | Twitter | LinkedIn | Comics | All articles CORRECTION: In this article, I incorrectly state that an acyclic finite state automata (aka a DAWG) cannot be used to retrieve values associated with its keys. I have since learned that it can. By storing in each internal node the number of leaf nodes that are reachable
Text Classification and Feature Hashing: Sparse Matrix-Vector Multiplication with Cython | Newsle Blog
by Erich Owens Optimizing the memory footprint of a classifier used here at Newsle set us down a rabbit hole of rewriting a basic Scipy function with Cython, something that only became a problem when our high-dimensional text spaces grew to a cartoonish size, thanks to the hashing trick. Here I motivate the use of the hashing trick, how we use sparse matrix-vector multiplication for text classific
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