公开(公告)号：US20210042641A1

公开(公告)日：2021-02-11

申请号：US16823214

申请日：2020-03-18

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

Inventor： Yanyan LI ,  Jianguo DUAN ,  Hui XIONG

IPC: G06N5/04 ,  G06N20/00 ,  H04W4/029

Abstract: A method, an apparatus and a storage medium for stay point recognition and prediction model training are proposed. The method may include: for a to-be-recognized positioning point, obtaining respectively features of N predetermined dimensions for the to-be-recognized positioning point, N being a positive integer greater than one; generating a feature vector for the to-be-recognized positioning point according to the features obtained; determining whether the to-be-recognized positioning point is a stay point based on the feature vector, by using a prediction model obtained by pre-training. The technical solution may be applied to improve the accuracy and a recall rate of the stay point recognition.

公开(公告)号：US20210254992A1

公开(公告)日：2021-08-19

申请号：US17037144

申请日：2020-09-29

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

Inventor： Jingbo ZHOU ,  Renjun HU ,  Airong JIANG ,  Jianguo DUAN ,  Hui XIONG

IPC: G01C21/36 ,  G06K9/62

Abstract: The present disclosure provides a method for optimizing a tag of a point of interest s(POI). The method includes: obtaining first portrait feature data of each POI in a plurality of POIs and second portrait feature data of each tag in a plurality of marked tags corresponding to the plurality of POIs; mapping the first portrait feature data of each POI and the second portrait feature data of each tag to a metric space to obtain a first feature vector of each POI and a second feature vector of each tag; and optimizing at least one marked tag corresponding to a target POI based on a vector similarity between a first feature vector of the target POI and a second feature vector of at least one tag. The present disclosure provides an apparatus for optimizing a tag of a POI, an electronic device and a computer readable medium.

公开(公告)号：US20210044930A1

公开(公告)日：2021-02-11

申请号：US16821729

申请日：2020-03-17

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

Inventor： Yanyan LI ,  Jianguo DUAN ,  Hui XIONG

IPC: H04W4/029

Abstract: A method, an apparatus, a computer device and a storage medium for stay point recognition are disclosed. The method comprises: obtaining reference stay points corresponding to a to-be-recognized positioning point; selecting from the reference stay points a stay point in a predetermined relationship with the to-be-recognized positioning point; and determining whether the to-be-recognized positioning point is a stay point based on the stay point selected. The technical solution may improve the accuracy and recall rate of the stay point recognition.

公开(公告)号：US20200326197A1

公开(公告)日：2020-10-15

申请号：US16710566

申请日：2019-12-11

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

Inventor： Yanyan LI ,  Jianguo DUAN ,  Hui XIONG

IPC: G01C21/34 ,  G06F16/29 ,  G06F40/242 ,  G06N20/00

Abstract: Embodiments of the present disclosure provide a method, apparatus, computer device, and storage medium for determining a POI alias. The method may include: acquiring a to-be-processed target POI, and generating a candidate alias list corresponding to the target POI based on a query behavior-associated log matching the target POI; and screening out at least one target alias corresponding to the target POI in the candidate alias list, according to an association relationship between each candidate alias in the candidate alias list and the target POI.