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Map matching method and map matching model determination method and device

A map matching and model technology, applied in the computer field, can solve the problem of low map matching accuracy and achieve the effect of improving accuracy

Inactive Publication Date: 2021-08-03
BEIJING DIDI INFINITY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the existing HMM model is used for map matching, various features (such as distance, direction, speed, etc.) lower

Method used

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  • Map matching method and map matching model determination method and device
  • Map matching method and map matching model determination method and device
  • Map matching method and map matching model determination method and device

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Embodiment Construction

[0049] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0050] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0051] Unless the context clearly requires, the words "including", "including" and similar words in the description should be interpreted as inclusive rather than exclusive or exhaustive; that is, "including but not limited to".

[0052] In the description of the present invention, it shoul...

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Abstract

The embodiment of the invention discloses a map matching method and a map matching model determination method and device. At least one candidate road section is determined according to a position point corresponding to a target task, a feature vector of the position data of the position point is obtained, the feature vector is inputted into a map matching model for processing, selecting parameters of all the candidate road sections are determined, a target road section is determined according to the selecting parameters of all the candidate road sections, the position data comprise association information of position points and all the candidate road sections, and the map matching model comprises a recurrent neural network model; the training sample data of the map matching model is marked and determined according to the predetermined data processing result of the hidden Markov model, so that multiple features in the position data can be subjected to fitting processing, and the map matching accuracy is improved.

Description

technical field [0001] The present invention relates to the field of computer technology, and more specifically, to a map matching method, a method and a device for determining a map matching model. Background technique [0002] Map Matching technology uses electronic maps and positioning information to determine the exact position of vehicles on the road. The basic idea is to link the vehicle positioning track obtained by the positioning device with the road information in the electronic map database, and thus determine The position of the vehicle relative to the map. Currently, map matching usually adopts HMM (Hidden Markov Model, Hidden Markov Model). When the existing HMM model is used for map matching, various features (such as distance, direction, speed, etc.) lower. Contents of the invention [0003] In view of this, embodiments of the present invention provide a map matching method, a method and a device for determining a map matching model, so as to perform fit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/30G06K9/62G06N3/04G06N3/08
CPCG01C21/30G06N3/08G06N3/045G06F18/295
Inventor 狄烨李洋李亚旭
Owner BEIJING DIDI INFINITY TECH & DEV