%0 Journal Article
%T A novel spatio-temporal generative inference network for predicting the long-term highway traffic speed
%J Transportation research part C: emerging technologies
%D 2023
%A Zou, Guojian
%A Lai, Ziliang
%A Ma, Changxi
%A Li, Ye
%A Wang, Ting
%V 154
%N 
%P e104263-e104263
%X Accurately predicting the highway traffic speed can reduce traffic accidents and transit time, which is of great significance to highway management. Three essential elements should be considered in the long-term highway traffic speed prediction: (1) adaptability to speed fluctuation, (2) exploring the spatio-temporal correlation effectively, and (3) prediction of non-error propagation. This paper proposes a novel spatio-temporal generative inference network (STGIN) driven by data and long-term prediction. STGIN consists of three parts; semantic enhancement, spatio-temporal correlation extraction block (ST-Block), and generative inference. Semantic enhancement is first used to model the contextual semantics of traffic speed, improving the adaptability to speed fluctuations. The ST-Block is then used to extract the spatio-temporal correlations of the highway network. Finally, generative inference is used to pay attention to the correlation between historical- and target-sequences to generate the target hidden outputs rather than a dynamic step-by-step decoding way; it avoids long-term prediction error propagation in the spatial and temporal dimensions. The evaluation experiments use the monitoring data of highway in Yinchuan City, Ningxia Province, China. For long-term highway speed prediction, the experimental results demonstrate that the performance of the proposed method is better than that of the baseline methods.<p /> <p>Language: en</p>
%G en
%I Elsevier Publishing
%@ 0968-090X
%U http://dx.doi.org/10.1016/j.trc.2023.104263