Variable message sign information release method of prediction model
A forecasting model and information release technology, applied in forecasting, arrangement of variable traffic indications, data processing applications, etc., can solve problems such as limited inducement, inability to display future road condition forecasting information on signposts, and limited assistance, and achieve overall traffic conditions. The effect of improving conditions
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[0028] The present invention provides a variable information board information release method of a forecast model, comprising the following steps:
[0029] Step 1: Obtain the road traffic flow and vehicle average speed data of each road in the road network covered by the variable information board from 1 to 8 days ago, and the maximum time interval of the data is not greater than 1 minute;
[0030] Step 2: Use polynomial regression to establish road flow-travel time relationship based on historical traffic data, and use cross-validation to enhance model generalization;
[0031] Step 3: Assuming that the current moment is n, take the traffic flow at the n-3, n-2, n-1, and n-th moments respectively on the target road and the two roads geometrically adjacent to the target road as input variables ( A total of 12 input variables: x i,1 , x i,2 , x i,3 , x i,4 , x i,5 , x i,6 , x i,7 , x i,8 , x i,9 , x i,10 , x i,11 , x i,12 ), the traffic flow at the moment to be predi...
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