公开(公告)号：US20230012642A1

公开(公告)日：2023-01-19

申请号：US17933160

申请日：2022-09-19

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Xin Deng ,  Biao Cao ,  Yang Liu

IPC: G06F16/23 ,  G06F16/27

Abstract: With the method for snapshotting metadata, in response to reaching a current snapshot moment, a second basic version number of a binary search tree in a database at the current snapshot moment is generated according to a first basic version number at a previous snapshot moment; during a process from the current snapshot moment to a next snapshot moment, whenever metadata in the database is updated, the binary search tree is updated according to the updated metadata, and an updated version number of the binary search tree after each update is generated according to the second basic version number; and in response to reaching the next snapshot moment, a snapshot operation is performed on binary search trees corresponding to all version numbers generated between the current snapshot moment and the next snapshot moment to generate snapshot information of the current snapshot moment.

公开(公告)号：US20230060507A1

公开(公告)日：2023-03-02

申请号：US18047733

申请日：2022-10-19

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Haiwei Wang ,  Baowei Wang ,  Xuejiao Hao ,  Lingyi Yin ,  Yang Liu

IPC: G06Q10/10 ,  G06Q10/06 ,  G06N5/02

Abstract: An intelligent office system includes an application layer, an engine layer and a system layer. The application layer may be configured to create work cards for work tasks acquired from application systems, store each work card into the system layer by calling the engine layer; acquire changing information of each work card, and update each work card that has been stored in the system layer by calling the engine layer. In response to being called by the application layer, the engine layer sends the created work cards and the changing information of each work card to the system layer for storage and update. The system layer stores information of each work card.

公开(公告)号：US11447153B2

公开(公告)日：2022-09-20

申请号：US17339016

申请日：2021-06-04

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Yang Liu ,  Shiyu Song

IPC: B60W60/00

Abstract: A method and apparatus for annotating a virtual lane at a crossing is provided, which relates to the field of intelligent transportation, and specifically includes: calculating a virtual connecting probability of various lanes that do not connected to each other at the crossing based on driving trajectory data of a vehicles that passing through the crossing within a detection time, and generating the virtual lane at the crossing for two disconnected lanes whose virtual connecting probability is greater than a threshold, and annotating the virtual lane on a map. In this process, the virtual lane at the crossing can be automatically generated according to the driving trajectory data of the vehicles passing through the crossing, and because the driving trajectory data of the vehicles passing through the crossing is real trajectory data, which is more in conformity with actual driving rules of the vehicles, and has a higher annotation accuracy.