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Feature Hashing in R
Aug 2016
featurehashing
dada_kishore
Aug '16
1 / 4 Aug 2016
Can someone help me what “Hashing Trick” is? Also please direct me to any docs if any. Thank You
caiotaniguchi
Aug '16
Feature hashing is the encoding of multiple features into a single numeric ‘feature’ of a given range. Not really a feature, but a hash map. It’s particularly useful for compressing sparse matrices (matrices with many 0’s). For more information, read wikipedia’s hash table page and Hash Collision Probabilities .