Method for Model Construction for a Travel-Time Database

摘要

According to a method for creating a model for a travel time database, a leg network comprising leg sections between a starting point and a destination point are analyzed. Multiple routes are ascertained between the starting and destination points. Each leg section of a route is associated with a relative travel time loss and is weighted. The ascertained travel time losses and the associated weightings are used as input data for a learning method by way of which an existing knowledge base is iteratively expanded.

主权项

1. A method for creating a model for a travel time database, comprising:
providing a leg network comprising leg sections between a starting point and a destination point; ascertaining a plurality of possible routes between the starting point and the destination point, wherein each route comprises leg sections including at least one of the leg sections of the leg network; ascertaining a respective relative travel time loss for each leg section of each route with a respective traffic characteristic on each leg section of each route; associating the ascertained relative travel time losses of the leg sections of the routes with each leg section of the leg network; ascertaining a respective weighting of the relative travel time losses (ui,k) for each leg section of each route with a respective traffic characteristic on each leg section of each route; associating the ascertained weightings of the leg sections of the routes with each leg section of the leg network; and ascertaining a probability distribution of the relative travel time losses for each leg section of the leg network (H) with the traffic characteristic associated with the respective leg section and a calibration parameter associated with the respective leg section.