聚类名称

Cluster name

大小

Size

同质性

Silhouette

研究主题(对数似然比/P值)

Top terms (log-likelihood/P-level)

#0 car-following model

52

0.781

car-following model (12.43, 0.001); behavior (9.3, 0.005)

weather conditions (6.19, 0.05)

#1 traffic safety

46

0.775

traffic safety (12.04, 0.001); vehicle automation (8, 0.005)

dispersion (8, 0.005)

#2 traffic flow

44

0.834

traffic flow (17.25, 1.0E−4); traffic jams (7.71, 0.01)

microscopic simulation (7.71, 0.01)

cellular automaton (7.71, 0.01)

#3 empirical speed distribution

39

0.868

empirical speed distribution (4.02, 0.05)

freeway traffic (4.02, 0.05); lane-changing behavior (4.02, 0.05)

three-phase traffic theory (4.02, 0.05)

#4 fundamental diagram

28

0.764

fundamental diagram (8.27, 0.005)

network fundamental diagram (9.73, 0.005)

heterogeneous traffic (9.73, 0.005)

#5 travel time

27

0.97

travel time (11.67, 0.001); platoon dispersion model (5.8, 0.05)

shifted log-normal model (5.8, 0.05)

recursive estimation (5.8, 0.05)

#6 spatial vehicle distribution

24

0.885

spatial vehicle distribution (9.5, 0.005)

convolutional neural network (9.5, 0.005)

real-time crash risk analysis (9.5, 0.005)

#7 traffic control strategy

22

0.821

traffic control strategy (5.52, 0.05)

bayesian inference method (5.52, 0.05)

trip length distribution (5.52, 0.05)

#8 distributed optimization

11

0.968

distributed optimization (8.49, 0.005); algorithm (8.49, 0.005)

control distribution (8.49, 0.005)

anticipatory network traffic control (8.49, 0.005)