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- invited-talkNovember 2019
Unlocking Autonomous Mobility
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPage 1https://doi.org/10.1145/3347146.3368470Autonomous cars are expected to dramatically redefine the future of transportation. When fully realized, this technology promises to unlock a myriad societal, environmental, and economic benefits. From a technical standpoint, autonomous cars pose ...
- invited-talkNovember 2019
Visual Spatial Analytics and Trusted Information for Effective Decision Making
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPage 2https://doi.org/10.1145/3347146.3368469Information, not just data, is key to today's global challenges. To solve these challenges requires not only advancing geospatial and big data analytics but requires new analysis and decision-making environments that enable reliable decisions from ...
- short-paperNovember 2019
Distance-Aware Competitive Spatiotemporal Searching Using Spatiotemporal Resource Matrix Factorization (GIS Cup)
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 624–627https://doi.org/10.1145/3347146.3363350Congested traffic wastes billions of liters of fuel and is a significant contributor to Green House Gas (GHG) emissions. Although convenient, ride sharing services such as Uber and Lyft are becoming a significant contributor to these emissions not only ...
- short-paperNovember 2019
A Sampling-based Strategy for Distributing Taxis in a Road Network for Occupancy Maximization (GIS Cup)
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 616–619https://doi.org/10.1145/3347146.3363348We present a weighted sampling strategy for distributing a system of taxi agents on a road network. We consider a setting, in which each agent operates independently, following a prescribed strategy based on historical data. Furthermore, customer ...
- demonstrationNovember 2019
Height and Facet Extraction from LiDAR Point Cloud for Automatic Creation of 3D Building Models
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 596–599https://doi.org/10.1145/3347146.3359372Three-dimensional models of buildings have a variety of applications, e.g., in urban planning, for making decision where to locate power lines, solar panels, cellular antennas, etc. Often, 3D models are created from a LiDAR point cloud, however, this ...
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- research-articleNovember 2019
A NUMA-aware Trajectory Store for Travel-Time Estimation
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 209–218https://doi.org/10.1145/3347146.3359371The increasingly massive volumes of vehicle trajectory data that are becoming available hold the potential to enable more accurate vehicle travel-time estimation than hitherto possible. To enable such uses, we present a multi-threaded, in-memory ...
- research-articleNovember 2019
Detecting Spatial Clusters of Disease Infection Risk Using Sparsely Sampled Social Media Mobility Patterns
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 359–368https://doi.org/10.1145/3347146.3359369Standard spatial cluster detection methods used in public health surveillance assign each disease case to a single location (typically, the patient's home address), aggregate locations to small areas, and monitor the number of cases in each area over ...
- demonstrationNovember 2019
Towards a qualitative analysis of interpolation methods for deformable moving regions
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 592–595https://doi.org/10.1145/3347146.3359368Spatio-temporal data on the evolution of real-world phenomena are normally acquired as snapshots in discrete time. The continuous evolution of a phenomenon between observations can be approximated using interpolation methods capable of generating ...
- posterNovember 2019
Deformable Part Models for Automatically Georeferencing Historical Map Images
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 540–543https://doi.org/10.1145/3347146.3359367Libraries are digitizing their collections of maps from all eras, generating increasingly large online collections of historical cartographic resources. Aligning such maps to a modern geographic coordinate system greatly increases their utility. This ...
- research-articleNovember 2019
Real-Time Applications Using High Resolution 3D Objects in High Definition Maps (Systems Paper)
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 229–238https://doi.org/10.1145/3347146.3359353One of the greatest challenges in automated driving is the ability to acquire, access and query the data pertaining to high resolution 3D objects from multiple heterogeneous sources. Specifically, the information extraction needs to be done by fusing ...
- posterNovember 2019
Road Network Reconstruction from satellite images with Machine Learning Supported by Topological Methods
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 520–523https://doi.org/10.1145/3347146.3359348Automatic Extraction of road network from satellite images is a goal that can benefit and even enable new technologies. Methods that combine machine learning (ML) and computer vision have been proposed in recent years which make the task semi-automatic ...
- posterNovember 2019
Breadcrumbs: A Rich Mobility Dataset with Point-of-Interest Annotations
- Arielle Moro,
- Vaibhav Kulkarni,
- Pierre-Adrien Ghiringhelli,
- Bertil Chapuis,
- Kévin Huguenin,
- Benoît Garbinato
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 508–511https://doi.org/10.1145/3347146.3359341Rich human mobility datasets are fundamental for evaluating algorithms pertaining to geographic information systems. Unfortunately, existing mobility datasets--that are available to the research community--are restricted to location data captured ...
- posterNovember 2019
DeepSPACE: Approximate Geospatial Query Processing with Deep Learning
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 500–503https://doi.org/10.1145/3347146.3359112The amount of available geospatial data grows at an ever faster pace. This leads to a constantly increasing demand for processing power and storage in order to provide data analysis in a timely manner. At the same time, a lot of geospatial processing is ...
- posterNovember 2019
20 Years of Mobility Modeling & Prediction: Trends, Shortcomings & Perspectives
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 492–495https://doi.org/10.1145/3347146.3359110In this paper, we present the insights drawn from a comprehensive survey of human-mobility modeling research based on 1680 articles that can serve as a roadmap for research and practice in this area. Mobility modeling research has accelerated the ...
- research-articleNovember 2019
Qualitative Place Maps for Landmark-based Localization and Navigation in GPS-denied Environments
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 23–32https://doi.org/10.1145/3347146.3359107GPS-based services (e.g. Google Maps) are very popular in our daily life, while there are still many GPS-denied environments (e.g. indoor and underground scenarios) in which they cannot be used. In these situations, localization and navigation are still ...
- research-articleNovember 2019
Collective Representation Learning on Spatiotemporal Heterogeneous Information Networks
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 319–328https://doi.org/10.1145/3347146.3359104Representation learning is a technique that is used to capture the underlying latent features of complex data. Representation learning on networks has been widely implemented for learning network structure and embedding it in a low dimensional vector ...
- posterNovember 2019
Conflict-Free Evacuation Route Planner
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 480–483https://doi.org/10.1145/3347146.3359102Given a transportation network with node and edge capacity constraints, initial node occupancy, destination locations, and the conflict resolution parameter k, the Conflict-Free Evacuation Route Planner (CF-ERP) problem finds evacuation routes that can ...
- research-articleNovember 2019
Retrieving α-Shapes and Schematic Polygonal Approximations for Sets of Points within Queried Temporal Ranges
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 249–258https://doi.org/10.1145/3347146.3359087The interactive exploration of data requires data structures that can be repeatedly queried to obtain simple visualizations of parts of the data. We consider the scenario that the data is a set of points each associated with a time stamp and that the ...
- posterNovember 2019
Flight Delay Prediction using Airport Situational Awareness Map
- Wei Shao,
- Arian Prabowo,
- Sichen Zhao,
- Siyu Tan,
- Piotr Koniusz,
- Jeffrey Chan,
- Xinhong Hei,
- Bradley Feest,
- Flora D. Salim
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 432–435https://doi.org/10.1145/3347146.3359079The prediction of flight delays plays a significantly important role for airlines and travellers because flight delays cause not only tremendous economic loss but also potential security risks. In this work, we aim to integrate multiple data sources to ...
- research-articleNovember 2019
Temporal Geo-Social Personalized Search Over Streaming Data
SIGSPATIAL '19: Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information SystemsPages 189–198https://doi.org/10.1145/3347146.3359073The unprecedented rise of social media platforms, combined with location-aware technologies, has led to continuously producing a significant amount of geo-social data that flows as a user-generated data stream. This data has been exploited in several ...