Traffic classification based on spatial neighbor model
First Claim
1. A method comprising:
- accessing a road topology comprising links from a geographic database;
selecting, using a processor, a link from the road topology;
identifying, using the processor, a subset of the road topology having neighboring links that have a significant conditional probability on the selected link; and
generating, using the processor, a traffic estimation model for the selected link using the subset of road topology and historical traffic data for the neighboring links and historical traffic data for the selected link,wherein the subset of the road topology includes parent links of the selected link, child links of the selected link, and parent links of the child links of the selected link.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems, methods, and apparatuses are described for estimating traffic conditions on road segments when no real time traffic data is available. A computing device may access a road topology comprising links from a geographic database. One of the links is selected from road topology. The computing device identifies a subset of the road topology having neighboring links that have an influentual conditional probability on the selected link. In one example, the subset of the neighboring links includes parent links for the selected link, child links for the selected link, and parents of child links of the selected link. The computing device generates a traffic estimation model for the selected link using the subset of road topology and historical traffic data for the neighboring links.
37 Citations
19 Claims
-
1. A method comprising:
-
accessing a road topology comprising links from a geographic database; selecting, using a processor, a link from the road topology; identifying, using the processor, a subset of the road topology having neighboring links that have a significant conditional probability on the selected link; and generating, using the processor, a traffic estimation model for the selected link using the subset of road topology and historical traffic data for the neighboring links and historical traffic data for the selected link, wherein the subset of the road topology includes parent links of the selected link, child links of the selected link, and parent links of the child links of the selected link. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13)
-
-
7. An apparatus comprising:
-
at least one processor; at least one display; and at least one memory including computer program code for one or more programs;
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to;request, using a processor, traffic information for a road topology including a first road link and a second road link; receive real time traffic data for the first road link, wherein no real time traffic data is available for the second road link; receive estimated traffic information for the second road link; and display, using the display, the traffic information, wherein the estimated traffic information is based a set of causal links that have a causal relationship with the second road link, and the causal links include at least one parent link that feeds traffic into the second road link, at least one child link that receives traffic from the second road link, and at least one supplemental link that feeds traffic into the at least one child link, wherein a conditional probability between each of the causal links and the second road link is greater than a probability threshold.
-
-
14. An apparatus comprising:
-
at least one processor; and at least one memory including computer program code for one or more programs;
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least;select a road link; identify a set of causal links that have a causal relationship with the selected link, wherein a conditional probability between each of the causal links and the selected link is greater than a probability threshold, wherein the causal links include at least one parent link to the selected link, at least one child link to the selected link, and at least one supplemental link that is separated from the selected road link by the at least one child link or the at least one parent link; and generate a model for the selected link using historical data for the set of causal links and for the selected link, wherein the historical data is gathered by a traffic probe. - View Dependent Claims (15, 16, 17)
-
-
18. A method comprising:
-
requesting, using a processor, traffic information for a road topology including a first road link and a second road link; receiving real time traffic data for the first road link, wherein no real time traffic data is available for the second road link; receiving estimated traffic information for the second road link; and displaying the traffic information, wherein the estimated traffic information is based on a model generated from a set of causal links that have a causal relationship with the second road link, wherein a conditional probability between each of the causal links and the second road link is greater than a probability threshold, wherein the causal links include at least one parent link to the second road link, at least one child link to the second road link, and at least one supplemental link that is separated from the second road link by the at least one child link or the at least one parent link. - View Dependent Claims (19)
-
Specification