Method and device for updating prediction model for vehicle passenger flow volume
A technology for predicting models and passenger flow, applied in the computer field, can solve problems such as resource waste, congestion, narrow roads and traffic, and achieve the effects of accelerating convergence speed, improving model training efficiency, and reducing computing costs.
Active Publication Date: 2021-09-28
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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Problems solved by technology
Unreasonable traffic layout will also bring some problems to the urban layout and the environment, such as resource waste caused by the scarcity of bus passengers, lack of effective public transportation in sections with large traffic demand, narrow roads in individual sections, traffic congestion, etc.
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[0026] The solutions provided in this specification will be described below in conjunction with the accompanying drawings.
[0027] figure 1 A specific application scenario of the embodiment of this specification is shown. figure 1 It is a schematic diagram of urban traffic lines. Among them, white lines are used to represent urban roads, dark gray areas are water areas, and light gray areas isolated by white lines are construction areas. It can be understood that the building area may be a residential area, an office area, a life service area (such as a supermarket, etc.) and the like. These areas can be used as the starting point or destination point of urban population flow. In the context of big data and smart terminals, urban population can usually be described by end users. Furthermore, each trip of a user from a starting point to a target point may correspond to a piece of travel data. For a predetermined time period, such as a daytime (such as 6:00 am to 6:00 pm, ...
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The embodiment of the invention provides a method and a device for updating a prediction model for vehicle passenger flow volume, in the training process for the prediction model for the vehicle passenger flow volume, a matrix mode is used for replacing an operation mode of a mathematical expression, mathematical characteristics of the matrix and the vector are fully utilized, operation and passenger flow volume summarization processes are completed, therefore, the problem that an optimization algorithm is difficult to use in a mathematical expression is avoided, the convergence speed is increased, and the model training efficiency is improved. Furthermore, the loss function can be defined as vector consistency by utilizing the characteristics of vectors, so that the accuracy of the prediction model is not influenced even if the sample data volume is reduced, and the calculation cost in the model training process is further reduced.
Description
technical field [0001] One or more embodiments of this specification relate to the field of computer technology, and in particular to a method and device for updating a prediction model of vehicle passenger flow through a computer. Background technique [0002] Traffic conditions are an important part of the urban geographical environment and a symbol of social economy and urban development. Reasonable transportation layout can provide convenience for residents. A reasonable traffic layout includes, for example, bus placement, station setting, taxi placement, traffic light layout, road layout, and the like. Unreasonable traffic layout will also bring some problems to the urban layout and the environment, such as resource waste caused by the scarcity of bus passengers, lack of effective public transportation in sections with large traffic demand, narrow roads in individual sections and traffic congestion, etc. The passenger flow simulation or prediction of urban vehicles (s...
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IPC IPC(8): G08G1/01G06F17/16G06Q10/04G06Q50/26
CPCG08G1/0104G08G1/0125G06F17/16G06Q10/04G06Q50/26
Inventor 陈旭刘晔诚
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD