Name
Title | ||
|---|---|---|
Risk-aware path selection with time-varying, uncertain travel costs: a time series approach. |
Abstract | ||
|---|---|---|
We address the problem of choosing the best paths among a set of candidate paths between the same origin–destination pair. This functionality is used extensively when constructing origin–destination matrices in logistics and flex transportation. Because the cost of a path, e.g., travel time, varies over time and is uncertain, there is generally no single best path. We partition time into intervals and represent the cost of a path during an interval as a random variable, resulting in an uncertain time series for each path. When facing uncertainties, users generally have different risk preferences, e.g., risk-loving or risk-averse, and thus prefer different paths. We develop techniques that, for each time interval, are able to find paths with non-dominated lowest costs while taking the users’ risk preferences into account. We represent risk by means of utility function categories and show how the use of first-order and two kinds of second-order stochastic dominance relationships among random variables makes it possible to find all paths with non-dominated lowest costs. We report on empirical studies with large uncertain time series collections derived from a 2-year GPS data set. The study offers insight into the performance of the proposed techniques, and it indicates that the best techniques combine to offer an efficient and robust solution. |
Year | DOI | Venue |
|---|---|---|
2018 | https://doi.org/10.1007/s00778-018-0494-9 | VLDB J. |
Keywords | Field | DocType |
Risk preferences,Stochastic dominance,Uncertain time series,Utility functions | Data mining,Mathematical optimization,Random variable,Gps data,Matrix (mathematics),Computer science,Stochastic dominance,FLEX,Travel time,Partition (number theory),Empirical research | Journal |
Volume | Issue | ISSN |
27 | 2 | 1066-8888 |
Citations | PageRank | References |
6 | 0.43 | 25 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jilin Hu | 1 | 74 | 5.69 |
| Bin Yang | 2 | 706 | 34.93 |
| Chenjuan Guo | 3 | 301 | 16.81 |
| Christian S. Jensen | 4 | 10651 | 1129.45 |