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Lee D. Han

Researcher at University of Tennessee

Publications -  111
Citations -  2595

Lee D. Han is an academic researcher from University of Tennessee. The author has contributed to research in topics: Traffic flow & Poison control. The author has an hindex of 24, co-authored 105 publications receiving 2082 citations. Previous affiliations of Lee D. Han include University of Idaho & Wilmington University.

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Online-SVR for short-term traffic flow prediction under typical and atypical traffic conditions

TL;DR: The OL-SVR model is compared with three well-known prediction models including Gaussian maximum likelihood (GML), Holt exponential smoothing, and artificial neural net models and suggests that GML, which relies heavily on the recurring characteristics of day-to-day traffic, performs slightly better than other models under typical traffic conditions, as demonstrated by previous studies.
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Electric bike sharing: simulation of user demand and system availability

TL;DR: A cost constrained e-bike sharing system design that can maintain a high level of system reliability (e-bike and battery availability) through optimal battery charging and distribution management is presented.
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Global Optimization of Emergency Evacuation Assignments

TL;DR: In a county-wide, large-scale evacuation case study, the one-destination model yields substantial improvement over the conventional approach, with the overall evacuation time reduced by more than 60 percent.
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AADT prediction using support vector regression with data-dependent parameters

TL;DR: A modified version of a pattern recognition technique known as support vector machine for regression (SVR) to forecast AADT is presented and the performance of the SVR-DP was compared with those of Holt exponential smoothing (Holt-ES) and of ordinary least-square linear regression (OLS-regression).
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Missing data imputation for traffic flow speed using spatio-temporal cokriging

TL;DR: This study employs empirical traffic speed data from radar detectors and vehicle probes and demonstrates that the overall predictions of the kriging-based imputation approach are accurate and reliable for all combinations of missing patterns and missing rates investigated.