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Volume 12
Issue 4
10.3390/axioms12040349
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Article

Join Operation for Semantic Data Enrichment of Asynchronous Time Series Data

by
Eloi Garcia
1,
Mohammad Peyman
2,
Carles Serrat
1 and
Fatos Xhafa
1,*
1
Department of Mathematics, Barcelona School of Building Construction, Universitat Politècnica de Catalunya-BarcelonaTECH, 08028 Barcelona, Spain
2
Department of Computer Science, Multimedia and Telecommunication, Universitat Oberta de Catalunya, 08018 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Axioms 2023, 12(4), 349; https://doi.org/10.3390/axioms12040349
Submission received: 27 February 2023 / Revised: 26 March 2023 / Accepted: 29 March 2023 / Published: 1 April 2023
(This article belongs to the Special Issue Application of Machine Learning and Optimization Methods in Engineering Mathematics)
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Abstract

In this paper, we present a novel framework for enriching time series data in smart cities by supplementing it with information from external sources via semantic data enrichment. Our methodology effectively merges multiple data sources into a uniform time series, while addressing difficulties such as data quality, contextual information, and time lapses. We demonstrate the efficacy of our method through a case study in Barcelona, which permitted the use of advanced analysis methods such as windowed cross-correlation and peak picking. The resulting time series data can be used to determine traffic patterns and has potential uses in other smart city sectors, such as air quality, energy efficiency, and public safety. Interactive dashboards enable stakeholders to visualize and summarize key insights and patterns.
Keywords: join operation; data standardization; spatial data distribution; lagged cross-correlations; time series data; semantic data enrichment; Open Data Barcelona; Smart City join operation; data standardization; spatial data distribution; lagged cross-correlations; time series data; semantic data enrichment; Open Data Barcelona; Smart City

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MDPI and ACS Style

Garcia, E.; Peyman, M.; Serrat, C.; Xhafa, F. Join Operation for Semantic Data Enrichment of Asynchronous Time Series Data. Axioms 2023, 12, 349. https://doi.org/10.3390/axioms12040349

AMA Style

Garcia E, Peyman M, Serrat C, Xhafa F. Join Operation for Semantic Data Enrichment of Asynchronous Time Series Data. Axioms. 2023; 12(4):349. https://doi.org/10.3390/axioms12040349

Chicago/Turabian Style

Garcia, Eloi, Mohammad Peyman, Carles Serrat, and Fatos Xhafa. 2023. "Join Operation for Semantic Data Enrichment of Asynchronous Time Series Data" Axioms 12, no. 4: 349. https://doi.org/10.3390/axioms12040349

APA Style

Garcia, E., Peyman, M., Serrat, C., & Xhafa, F. (2023). Join Operation for Semantic Data Enrichment of Asynchronous Time Series Data. Axioms, 12(4), 349. https://doi.org/10.3390/axioms12040349

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