公开(公告)号：US10216847B2

公开(公告)日：2019-02-26

申请号：US15617634

申请日：2017-06-08

Applicant: Google Inc.

Inventor： Huican Zhu ,  Anurag Acharya ,  Max Ibel ,  Howard B. Gobioff

IPC: G06F17/30 ,  G06F9/46

Abstract: Systems and method are provided for setting a respective reuse flag for a corresponding document in a plurality of documents based on a query-independent score associated with the corresponding document. A document crawling operation is performed on the plurality of documents in accordance with the reuse flag for respective documents in the plurality of documents. This document crawling operation includes reusing a previously downloaded version of a respective document in the plurality of documents instead of downloading a current version of the respective document from a host computer in accordance with a determination that the reuse flag associated with the respective document meets a predefined criterion.