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- research-articleOctober 2024JUST ACCEPTED
Towards effective, robust and utility-preserving watermarking of GPS trajectories
ACM Transactions on Spatial Algorithms and Systems (TSAS), Just Accepted https://doi.org/10.1145/3701558Personal GPS trajectory is essential for businesses and emerging data markets due to its relevance in various data-driven methods, including traffic forecasting, accident prediction, and profiling driving behavior. Watermarking is a method that ...
- research-articleAugust 2024
AGENDA: Predicting Trip Purposes with A New Graph Embedding Network and Active Domain Adaptation
ACM Transactions on Knowledge Discovery from Data (TKDD), Volume 18, Issue 8Article No.: 206, Pages 1–25https://doi.org/10.1145/3677020Trip purpose is a meaningful aspect of travel behaviour for the understanding of urban mobility. However, it is non-trivial to automatically obtain trip purposes. On one hand, trip purposes are naturally diverse and complicated, but the available ...
- research-articleJanuary 2023
A novel map matching algorithm for real-time location using low frequency floating trajectory data
International Journal of Advanced Intelligence Paradigms (IJAIP), Volume 24, Issue 3-4Pages 442–455https://doi.org/10.1504/ijaip.2023.129188The continuous enhancement of technologies and modern well-equipped infrastructures are necessary for easy life. Road accident and missing vehicle ratio are very challenging in preventing misshapenness because these are continually increasing due to ...
- research-articleNovember 2022
PreCLN: Pretrained-based contrastive learning network for vehicle trajectory prediction
AbstractTrajectory prediction of vehicles is of great importance to various smart city applications ranging from transportation scheduling, vehicle navigation, to location-based advertisements. Existing methods all focus on modeling spatiotemporal ...
- posterNovember 2022
W-trace: robust and effective watermarking for GPS trajectories
SIGSPATIAL '22: Proceedings of the 30th International Conference on Advances in Geographic Information SystemsArticle No.: 77, Pages 1–4https://doi.org/10.1145/3557915.3561474With the rise of data-driven methods for traffic forecasting, accident prediction, and profiling driving behavior, personal GPS trajectory data has become an essential asset for businesses and emerging data markets. However, as personal data, GPS ...
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- research-articleNovember 2022
Adaptive visualization of tourists' preferred spots and streets using trajectory articulation
HANIMOB '22: Proceedings of the 2nd ACM SIGSPATIAL International Workshop on Animal Movement Ecology and Human MobilityPages 27–32https://doi.org/10.1145/3557921.3565539Walking tourism, in which regional resources are organized with interesting themes, can provide visitors with original local walking experiences. Our project aims to collect user data through a mobile application and explore potential geographic ...
- research-articleMarch 2022
Wheels Know Why You Travel: Predicting Trip Purpose via a Dual-Attention Graph Embedding Network
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), Volume 6, Issue 1Article No.: 22, Pages 1–22https://doi.org/10.1145/3517239Trip purpose - i.e., why people travel - is an important yet challenging research topic in travel behavior analysis. Generally, the key to this problem is understanding the activity semantics from trip contexts. However, most existing methods rely on ...
- ArticleSeptember 2021
Performance Evaluation of GPS Trajectory Rasterization Methods
Computational Science and Its Applications – ICCSA 2021Pages 3–17https://doi.org/10.1007/978-3-030-86653-2_1AbstractThe availability of the Global Positioning System (GPS) trajectory data is increasing along with the availability of different GPS receivers and with the increasing use of various mobility services. GPS trajectory is an important data source which ...
- ArticleJuly 2021
Map-Matching Based on HMM for Urban Traffic
Advances and Trends in Artificial Intelligence. From Theory to PracticePages 462–473https://doi.org/10.1007/978-3-030-79463-7_39AbstractMap-matching for urban traffic is the process of matching geographical coordinates recorded by GPS devices to an electronic road network. However, the complexity of urban environments brings great challenges to map-matching. In urban areas, GPS ...
- research-articleJuly 2021
A turning point-based offline map matching algorithm for urban road networks
Information Sciences: an International Journal (ISCI), Volume 565, Issue CPages 32–45https://doi.org/10.1016/j.ins.2021.02.052AbstractOffline map matching is a crucial step to facilitate many trajectory-based services in urban areas by finding vehicles’ travel paths from recorded and stored trajectory data. This paper proposes a novel turning point-based offline map ...
- research-articleJanuary 2021
Improved location filtering using a context-aware approach
Journal of Ambient Intelligence and Smart Environments (JAISE), Volume 13, Issue 1Pages 55–72https://doi.org/10.3233/AIS-200587With the pervasiveness of GPS-enabled devices, a considerable number of GPS traces are accumulating continuously and unobtrusively in online communities. However, almost all current applications directly use raw GPS data, such as coordinates and time ...
- research-articleJanuary 2021
Hidden Markov map matching based on trajectory segmentation with heading homogeneity
Geoinformatica (KLU-GEIN), Volume 25, Issue 1Pages 179–206https://doi.org/10.1007/s10707-020-00429-4AbstractMap matching is to locate GPS trajectories onto the road networks, which is an important preprocessing step for many applications based on GPS trajectories. Currently, hidden Markov model is one of the most widely used methods for map matching. ...
- research-articleDecember 2020
Learning Individual Behavior Using Sensor Data: The Case of Global Positioning System Traces and Taxi Drivers
Information Systems Research (INFORMS-ISR), Volume 31, Issue 4Pages 1301–1321https://doi.org/10.1287/isre.2020.0946In this study, using a Bayesian learning model with a rich data set consisting of 2 million fine-grained GPS observations, we study the role of information observable by or made available to taxi drivers in enabling them to learn the distribution of ...
The ubiquitous deployment of mobile and sensor technologies enables observation and recording of human behavior in physical (off-line) settings in a manner similar to what has been possible to date in online settings. This provides researchers with a new ...
- research-articleNovember 2020
A review of methods to model route choice behavior of bicyclists: inverse reinforcement learning in spatial context and recursive logit
GeoSim '20: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on GeoSpatial SimulationPages 30–37https://doi.org/10.1145/3423335.3428165Used for route choice modeling by the transportation research community, recursive logit is a form of inverse reinforcement learning, the field of learning an agent's objective by observing it's behavior. By solving a large-scale system of linear ...
- research-articleAugust 2020
A Real-time Anomaly Detection Algorithm for Taxis Based on Trajectory Big Data
DSIT 2020: Proceedings of the 3rd International Conference on Data Science and Information TechnologyPages 227–231https://doi.org/10.1145/3414274.3414511In order to prevent taxi drivers from deliberately detouring or other fraudulent behaviors, a real-time anomaly trajectory detection algorithm based on spatial-temporal big data of taxi is proposed to obtain the real-time detection results with fast ...
- research-articleOctober 2019
Route Matching Research Based on Roadless Navigation Data Improvements on Hidden Markov Model
CSAE '19: Proceedings of the 3rd International Conference on Computer Science and Application EngineeringArticle No.: 51, Pages 1–6https://doi.org/10.1145/3331453.3360957The positioning problem is a key pre-processing step in the location service to assist in solving related problems such as location query and sharing in urban problems. Most of the map matching results obtained in these research fields are based on road ...
- research-articleAugust 2019
Personalized Visited-POI Assignment to Individual Raw GPS Trajectories
ACM Transactions on Spatial Algorithms and Systems (TSAS), Volume 5, Issue 3Article No.: 16, Pages 1–28https://doi.org/10.1145/3317667Knowledge discovery from GPS trajectory data is an essential topic in several scientific areas, including data mining, human behavior analysis, and user modeling. This article proposes a task that assigns personalized visited points of interest (POIs). ...
- articleJune 2019
Integrating GPS trajectory and topics from Twitter stream for human mobility estimation
Frontiers of Computer Science: Selected Publications from Chinese Universities (FCS), Volume 13, Issue 3Pages 460–470https://doi.org/10.1007/s11704-017-6464-3Understanding urban dynamics and large-scale human mobility will play a vital role in building smart cities and sustainable urbanization. Existing research in this domain mainly focuses on a single data source (e.g., GPS data, CDR data, etc.). In this ...
- articleJanuary 2019
TRec: an efficient recommendation system for hunting passengers with deep neural networks
Neural Computing and Applications (NCAA), Volume 31, Issue 1Pages 209–222https://doi.org/10.1007/s00521-018-3728-2Discovering hidden knowledge patterns in trajectory data can help to hunt passengers for taxi drivers. And it is an important issue in the intelligent transportation domain. However, the existing approaches are inaccurate in real applications. Hence in ...