Driving Style Recognition under Connected Circumstance Using a Supervised Hierarchical Bayesian Model

Table 2

Mathematical notation for the labeled LDA model.

Notation	Description
Θ	Multinomial distribution over driving styles
Ψ	Multinomial distribution over driving behaviors
Α	Dirichlet prior parameters for Θ = (θ1, ..., θM)
Β	Dirichlet prior parameters for Ψ = (ψ1, ..., ψK)
M	Number of drivers
Nm	Number of driving behaviors in m-th drivers
K	Number of driving styles
	The topic of the driving behavior
	The ith driving behavior
Λ^(m)	The label vector of driver m
Φk	Label prior for topic k