Patent ID: 11971976
Assignee: PAYPAL, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A system comprising:
a non-transitory memory; and
one or more hardware processors coupled to the non-transitory memory and configured to read instructions from the non-transitory memory to cause the system to perform operations comprising:
accessing text data corresponding to a corpus of documents;
parsing the text data to select a text string for use in a query; generating, based on a machine learning model, the query by removing a select set of words from the text string; and
determining, based on the machine learning model, one or more acceptable answers for the query with the select set of the words removed from the text string, wherein the one or more acceptable answers are determined based on 1) word representations generated from the text data and 2) a training set of word representations determined from at least one of previous messages associated with a user or the corpus of documents;
wherein the one or more acceptable answers are usable to authenticate the user by comparing a user response to the query to the one or more acceptable answers and determining that one or more matches exist.