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المؤلفBen Said, Ahmed
المؤلفErradi, Abdelkarim
تاريخ الإتاحة2023-04-10T09:10:03Z
تاريخ النشر2022
اسم المنشورIEEE Transactions on Intelligent Transportation Systems
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1109/TITS.2021.3062999
معرّف المصادر الموحدhttp://hdl.handle.net/10576/41791
الملخصEffective management of urban traffic is important for any smart city initiative. Therefore, the quality of the sensory traffic data is of paramount importance. However, like any sensory data, urban traffic data are prone to imperfections leading to missing measurements. In this paper, we focus on inter-region traffic data completion. We model the inter-region traffic as a spatiotemporal tensor that suffers from missing measurements. To recover the missing data, we propose an enhanced CANDECOMP/PARAFAC (CP) completion approach that considers the urban and temporal aspects of the traffic. To derive the urban characteristics, we divide the area of study into regions. Then, for each region, we compute urban feature vectors inspired from biodiversity which are used to compute the urban similarity matrix. To mine the temporal aspect, we first conduct an entropy analysis to determine the most regular time-series. Then, we conduct a joint Fourier and correlation analysis to compute its periodicity and construct the temporal matrix. Both urban and temporal matrices are fed into a modified CP-completion objective function. To solve this objective, we propose an alternating least square approach that operates on the vectorized version of the inputs. We conduct comprehensive comparative study with two evaluation scenarios. In the first one, we simulate random missing values. In the second scenario, we simulate missing values at a given area and time duration. Our results demonstrate that our approach provides effective recovering performance reaching 26% improvement compared to state-of-art CP approaches and 35% compared to state-of-art generative model-based approaches. 2000-2011 IEEE.
اللغةen
الناشرInstitute of Electrical and Electronics Engineers Inc.
الموضوعCANDECOMP/PARAFAC
tensor completion
Traffic tensor
العنوانSpatiotemporal Tensor Completion for Improved Urban Traffic Imputation
النوعArticle
الصفحات6836-6849
رقم العدد7
رقم المجلد23
dc.accessType Abstract Only


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