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KAFY: An Extensible and Scalable Transformers-Based System for Trajectory Data Analysis

Summary: KAFY unifies diverse trajectory-analysis tasks in a full-fledged, extensible system by treating trajectories as an “unspoken language” and transformers as reusable infrastructure. Its initial deployment combines three transformers and five operations, matching or surpassing specialized baselines. (summarized by gpt-5.6-luna on Aug 28 2026)

Paper ID
hca7bc68525c09600
Venue
VLDB
Year
2026
Pagerank
4.9769913e-05
Overall Rank
10,879 | 26.89%
DOI
10.14778/3836663.3836696
PDF
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Authors

BibTeX Citation

@article{hussein_vldb26,
        title = {{KAFY: An Extensible and Scalable Transformers-Based System for Trajectory Data Analysis}},
        author = {Hussein, Youssef and Mokbel, Mohamed F.},
        journal = {PVLDB},
        series = {{VLDB} '26},
        volume = {19},
        number = {11},
        pages = {3385--3399},
        doi = {10.14778/3836663.3836696},
        url = {https://doi.org/10.14778/3836663.3836696},
        year = {2026}
}

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Outgoing Citations (Sorted by Pagerank)

Showing 30 of 30 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank Cited Paper Year Venue Pagerank
2 R-Trees: A Dynamic Index Structure For Spatial Searching 1984 SIGMOD 0.0019923528
917 Trajectory Clustering: A Partition-and-Group Framework 2007 SIGMOD 0.00013085176
1,177 On Map-Matching Vehicle Tracking Data 2005 VLDB 0.0001163619
1,742 TranAD: Deep Transformer Networks for Anomaly Detection in Multivariate Time Series Data 2022 VLDB 9.7393078e-05
2,023 Distributed Trajectory Similarity Search 2017 VLDB 9.167612e-05
2,198 DITA: Distributed In-Memory Trajectory Analytics 2018 SIGMOD 8.8738834e-05
2,503 Trajectory Simplification: On Minimizing the Direction-based Error 2015 VLDB 8.3769225e-05
2,609 TraClass: Trajectory Classification Using Hierarchical Region-Based and Trajectory-Based Clustering 2008 VLDB 8.2248763e-05
2,915 Direction-Preserving Trajectory Simplification 2013 VLDB 7.8582407e-05
2,972 Time Series Data Cleaning: From Anomaly Detection to Anomaly Repairing 2017 VLDB 7.793491e-05
3,010 Trajectory Simplification: An Experimental Study and Quality Analysis 2018 VLDB 7.7541653e-05
3,162 Effective Travel Time Estimation: When Historical Trajectories over Road Networks Matter 2020 SIGMOD 7.5760668e-05
3,245 Efficient Processing of Window Queries in The Pyramid Data Structure 1990 PODS 7.4951501e-05
3,497 Anytime Stochastic Routing with Hybrid Learning 2020 VLDB 7.2521898e-05
3,764 MDTP: A Multi-source Deep Traffic Prediction Framework over Spatio-Temporal Trajectory Data 2021 VLDB 7.0388641e-05
3,772 Calibrating Trajectory Data for Similarity-based Analysis 2013 SIGMOD 7.0264549e-05
3,805 UlTraMan: A Unified Platform for Big Trajectory Data Management and Analytics 2018 VLDB 7.0099699e-05
4,072 SharkDB: An In-Memory Storage System for Massive Trajectory Data 2015 SIGMOD 6.8181285e-05
5,014 Fast Large-Scale Trajectory Clustering 2020 VLDB 6.3118364e-05
5,038 One-Pass Error Bounded Trajectory Simplification 2017 VLDB 6.3008371e-05
5,745 VRE: A Versatile, Robust, and Economical Trajectory Data System 2022 VLDB 6.0070567e-05
5,961 A Demonstration of ST-Hadoop: A MapReduce Framework for Big Spatio-temporal Data 2017 VLDB 5.9305742e-05
6,099 Trajectory Similarity Join in Spatial Networks 2017 VLDB 5.8851737e-05
6,737 Trajectory Similarity Measurement: An Efficiency Perspective 2024 VLDB 5.6912817e-05
7,657 Kamel: A Scalable BERT-based System for Trajectory Imputation 2024 VLDB 5.4746904e-05
8,701 QARTA: An ML-based System for Accurate Map Services 2021 VLDB 5.2880532e-05
10,154 RED: Effective Trajectory Representation Learning with Comprehensive Information 2025 VLDB 5.0691578e-05
10,156 TERI: An Effective Framework for Trajectory Recovery with Irregular Time Intervals 2024 VLDB 5.0691578e-05
10,981 A Demonstration of KAFY: An Extensible and Scalable Transformers-Based System for Trajectory Data Analysis 2026 VLDB 4.9769913e-05
11,429 Large Language Models for Spatial Analysis Queries 2025 VLDB 4.9769913e-05
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