hash
fun hashEncoder(numFeatures: Int, alternateSign: Boolean = true, tokenizer: (String) -> Array<String>): HashEncoder(source)
Feature hashing (the hashing trick) vectorizer.
Return
the HashEncoder.
Parameters
num
the number of features in the output space.
alternate
when true, an alternating sign is added to approximately conserve inner product.
tokenizer
the text tokenizer lambda.