公开(公告)号：US20190272344A1

公开(公告)日：2019-09-05

申请号：US16044286

申请日：2018-07-24

Applicant: Yangdi Lu ,  Wenbo He ,  Amirhosein Nabatchian

Inventor： Yangdi Lu ,  Wenbo He ,  Amirhosein Nabatchian

IPC: G06F17/30 ,  G06K9/62

Abstract: System and method of generating an index structure for indexing a plurality of unstructured data objects, including: generating a set of compact feature vectors, the set including a compact feature vector for each of the data objects, the compact feature vector for each data object including a sequence of hashed values that represent the data object; generating a plurality of twisted compact feature vector sets for each of set of compact feature vectors, each of the twisted compact feature vector sets being generated by applying a respective random shuffling permutation to the set of compact feature vectors; and for each twisted compact feature vector set, generating an index for the data objects in which the data objects are slotted based on sequences of hashed values in the twisted compact feature vector set.