公开(公告)号：US20210240688A1

公开(公告)日：2021-08-05

申请号：US17236573

申请日：2021-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenli Zhou ,  Mingchang Wei ,  Jiangbo Liu

IPC: G06F16/22

Abstract: A data index establishment method obtains M raw data segments and a first-layer mapping relationship through segment fitting on raw data in a raw data table, and further obtains N first key segments and a second-layer mapping relationship through segment fitting on a first key of each raw data segment. In a subsequent data query process, a multi-layer mapping relationship is input from a to-be-queried key sequentially in descending order, until a location of the to-be-queried key in the raw data table is located.

公开(公告)号：US10019492B2

公开(公告)日：2018-07-10

申请号：US15693971

申请日：2017-09-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenli Zhou ,  Zhe Wang ,  Feiran Hu

IPC: G06F17/30 ,  G06N99/00

CPC classification number: G06F16/2462 ,  G06F16/00 ,  G06F16/24553 ,  G06N20/00

Abstract: The present application relates to the field of computer technologies, and in particular, to a stop word identification method used in an information retrieval system. In a stop word identification method, after a first query input by a user is acquired, a second query that belongs to a same session as the first query is acquired, and a stop word in the first query is identified according to a change-based feature of each word in the first query relative to the second query. According to the solution provided by the present application, a stop word in a query can be identified more accurately, and efficiency and precision of an information retrieval system are improved.