# Retrieving α-Shapes and Schematic Polygonal Approximations for Sets of Points within Queried Temporal Ranges

> Research article (Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2019) · cited 10× · AI/ML

**Wikidata**: [openalex:W2986106910](https://www.wikidata.org/wiki/openalex:W2986106910)  
**Source**: https://4ort.xyz/entity/retrieving-shapes-and-schematic-polygonal-approximations-for-sets-of-points-within-queried-temporal-ranges