Converts a text to a sequence of indexes in a fixed-size hashing space.

text_hashing_trick(text, n, hash_function = NULL,
  filters = "!\"#$%&()*+,-./:;<=>?@[\\]^_`{|}~\t\n",
  lower = TRUE, split = " ")

Arguments

text	Input text (string).
n	Dimension of the hashing space.
hash_function	if `NULL` uses python `hash` function, can be 'md5' or any function that takes in input a string and returns a int. Note that `hash` is not a stable hashing function, so it is not consistent across different runs, while 'md5' is a stable hashing function.
filters	Sequence of characters to filter out such as punctuation. Default includes basic punctuation, tabs, and newlines.
lower	Whether to convert the input to lowercase.
split	Sentence split marker (string).

A list of integer word indices (unicity non-guaranteed).

Two or more words may be assigned to the same index, due to possible collisions by the hashing function.