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Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
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Related Experiment Video

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A method for filling traffic data based on feature-based combination prediction model.

Haicheng Xiao1, Xueyan Shen1, Jianglin Li2

  • 1Faculty of Transportation Engineering, Kunming University of Science and Technology, Kunming, China.

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|March 12, 2025
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Summary

This study introduces an advanced data imputation method for ride-hailing trajectories, improving accuracy and speed by leveraging spatiotemporal features. The novel approach enhances data characteristics for more reliable research outcomes.

Keywords:
Data filling techniquesLG-SG modelRide-hailing trajectory dataSpatiotemporal modeling

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Area of Science:

  • Data Science
  • Artificial Intelligence
  • Transportation Science

Background:

  • Data imputation is crucial for research accuracy, but traditional methods fail with complex spatiotemporal ride-hailing data.
  • Existing techniques lack speed and accuracy due to inadequate handling of temporal data characteristics.

Purpose of the Study:

  • To enhance data imputation accuracy and efficiency for ride-hailing trajectory data.
  • To overcome limitations of traditional imputation methods in capturing spatiotemporal features.

Main Methods:

  • A prediction-based imputation approach was developed.
  • A feature generation model using LightGBM-GRU was combined with a SARIMA-GRU prediction model.
  • This hybrid model enriches data characteristics for improved imputation.

Main Results:

  • The proposed method effectively imputes missing data in ride-hailing trajectories.
  • Enhanced capture and enrichment of data characteristics were achieved.
  • Improved imputation accuracy and convergence speed are demonstrated.

Conclusions:

  • The LightGBM-GRU and SARIMA-GRU integrated model offers a robust solution for spatiotemporal data imputation.
  • This approach provides a solid foundation for subsequent analyses in ride-hailing research.
  • The study highlights the importance of advanced feature engineering for accurate data imputation.