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An assignment model with modified Logit, which obviates enumeration and overlapping problems
Abstract One of the main components of stochastic assignment models is the route choice model solved with implicit or explicit path enumeration algorithms. Such models are used both for congested networks within equilibrium or dynamic models and for non-congested networks within static or pseudo-dynamic network loading models. This paper proposes a C-Logit model specification within a Dial algorithm structure for the implicit assignment of network flows. The model and its solution algorithm, called D-C-Logit, combine several positive features found in the literature for choice set generation and choices from a given choice set: • generation of a set of alternatives with a selective approach; • calculation of the path choice probability in a closed form; • simulation of the overlapping effect among alternative paths; • computation of just one tree for each origin avoiding explicit path enumeration. This paper has two main objectives: the proposition of a Dial-like algorithm to solve a C-Logit assignment model and application of the algorithm to different networks in order to demonstrate certain properties.
An assignment model with modified Logit, which obviates enumeration and overlapping problems
Abstract One of the main components of stochastic assignment models is the route choice model solved with implicit or explicit path enumeration algorithms. Such models are used both for congested networks within equilibrium or dynamic models and for non-congested networks within static or pseudo-dynamic network loading models. This paper proposes a C-Logit model specification within a Dial algorithm structure for the implicit assignment of network flows. The model and its solution algorithm, called D-C-Logit, combine several positive features found in the literature for choice set generation and choices from a given choice set: • generation of a set of alternatives with a selective approach; • calculation of the path choice probability in a closed form; • simulation of the overlapping effect among alternative paths; • computation of just one tree for each origin avoiding explicit path enumeration. This paper has two main objectives: the proposition of a Dial-like algorithm to solve a C-Logit assignment model and application of the algorithm to different networks in order to demonstrate certain properties.
An assignment model with modified Logit, which obviates enumeration and overlapping problems
Russo, Francesco (author) / Vitetta, Antonino (author)
Transportation ; 30
2003
Article (Journal)
English
A modified logit assignment model which obviates enumeration and overlapping problems
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