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This paper describes a general framework called Hybrid Dynamic Mixed Networks (HDMNs) which are Hybrid Dynamic Bayesian Networks that allow representation of discrete deterministic information in the form of constraints. We propose approximate inference algorithms that integrate and adjust well known algorithmic principles such as Generalized Belief(More)
The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the State of California. This report does not constitute a standard, specification, or regulation. ABSTRACT The fundamental principle of(More)
This paper describes a method for storing, modeling, and processing an individual's travel history collected with a GPS enabled device. The technique uses a general framework called Hybrid Dynamic Mixed Networks (HDMNs), which are Hybrid Dynamic Bayesian Networks that allow representation of discrete deterministic information in the form of constraints. We(More)
The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views of polices of the State of California. SUMMARY The existing paradigms for vehicular traffic monitoring and control have a strong infrastructure bias—data is(More)
The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the State of California. This report does not constitute a standard, specification, or regulation.
This project updated and deployed a freeway safety performance measurement tool. Freeway safety performance is measured by estimating the cumulative risk of different accident characteristics. The project built upon a previous research project that developed the core methodology. The tool evaluates the cumulative risk over time of an accident or a(More)
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