Export Citations
Save this search
Please login to be able to save your searches and receive alerts for new content matching your search criteria.
- technical-noteAugust 2021
Sequential Recommendation in Online Games with Multiple Sequences, Tasks and User Levels
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 130–140https://doi.org/10.1145/3469830.3470906Online gaming is growing faster than ever before, with increasing challenges of providing better user experience. Recommender systems (RS) for online games face unique challenges since they must fulfill players’ distinct desires, at different user ...
- research-articleAugust 2021
Spatial Skyline Queries on Triangulated Irregular Networks
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 64–73https://doi.org/10.1145/3469830.3470901A spatial skyline query is a query to find a set of data points that are not spatially dominated by other data points, given a set of data points P and query points Q in a multidimensional space. The query enumerates the skyline points based on ...
- research-articleAugust 2021
Metro Maps on Flexible Base Grids
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 12–22https://doi.org/10.1145/3469830.3470899We present new generic methods to efficiently draw schematized metro maps for a wide variety of layouts, including octilinear, hexalinear, and orthoradial maps. The maps are drawn by mapping the input graph to a suitable grid graph. Previous work was ...
- research-articleAugust 2021
Spatial Dimensions of Algorithmic Transparency: A Summary
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 116–125https://doi.org/10.1145/3469830.3470898Spatial data brings an important dimension to AI’s quest for algorithmic transparency. For example, data driven computer-aided policy-decisions use measures of segregation (e.g., dissimilarity index) or income-inequality (e.g., Gini index), and these ...
- research-articleAugust 2021
A Novel Indexing Method for Spatial-Keyword Range Queries
- Panagiotis Tampakis,
- Dimitris Spyrellis,
- Christos Doulkeridis,
- Nikos Pelekis,
- Christos Kalyvas,
- Akrivi Vlachou
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 54–63https://doi.org/10.1145/3469830.3470897Spatial-keyword queries are important for a wide range of applications that retrieve data based on a combination of keyword search and spatial constraints. However, efficient processing of spatial-keyword queries is not a trivial task because the ...
- research-articleAugust 2021
Privacy-Preserving Synthetic Location Data in the Real World
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 23–33https://doi.org/10.1145/3469830.3470893Sharing sensitive data is vital in enabling many modern data analysis and machine learning tasks. However, current methods for data release are insufficiently accurate or granular to provide meaningful utility, and they carry a high risk of ...
- research-articleAugust 2021
SPRIG: A Learned Spatial Index for Range and kNN Queries
SSTD '21: Proceedings of the 17th International Symposium on Spatial and Temporal DatabasesPages 96–105https://doi.org/10.1145/3469830.3470892A corpus of recent work has revealed that the learned index can improve query performance while reducing the storage overhead. It potentially offers an opportunity to address the spatial query processing challenges caused by the surge in location-based ...