Traffic flow predicting method and system

Abstract

The embodiment of the invention provides a traffic predicting method and system. The method comprises the steps that current traffic flow data are acquired, wherein the current traffic flow data comprise current traffic flow data of a road segment to be measured and current traffic flow data road segments related to the road segment to be measured; a first predicting model is determined; the current traffic flow data are input to the first predicting model, and a predicting traffic flow value of the road segment to be measured is obtained, wherein the first predicting model carries out discrete processing on historical traffic flow data by acquiring the historical traffic flow data to obtain discrete historical data, a space-time association rule is obtained by mining the discrete historical data, a set of the road segments related to the road segment to be measured is obtained through the space-time association rule, and the historical traffic flow data of the set of the road segments are generated in a training mode through a preset method.

Description

technical field [0001] The invention relates to the field of traffic flow forecasting, in particular to a traffic flow forecasting method and system. Background technique [0002] With the continuous development of the social economy and the transportation industry, traffic problems such as traffic congestion have become more and more prominent, and have become a common concern of the world. The prediction of traffic flow is not only the basis of urban traffic control and guidance, but also one of the key technologies to solve the problem of road congestion. If we can accurately predict the vehicle flow on each branch in the traffic network, then we can use the planning method to rationally optimize the traffic flow, so that the utilization rate of the road can be maximized, and some congestion problems can also be solved. [0003] At present, short-term traffic forecasting models are often used to predict traffic flow. Early short-term traffic forecasting models include: a...

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a traffic flow forecasting method and system to solve the influence of external random disturbance factors in the prior art, and use the existing short-term traffic forecasting model to predict the traffic flow, so that the obtained forecast Issues with low accuracy and stability of traffic flow values

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