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ACM Transactions on Spatial Algorithms and Systems (TSAS) - Regular Papers and SIGSPATIAL Paper, Volume 3 Issue 1, May 2017



Section: Regular Papers

A General Framework for MaxRS and MaxCRS Monitoring in Spatial Data Streams
Daichi Amagata, Takahiro Hara
Article No.: 1
DOI: 10.1145/3080554

This article addresses the MaxRS (Maximizing Range Sum) monitoring problem. Given a set of weighted spatial stream objects, this problem is to monitor a location of a user-specified sized rectangle where the sum of the weights of the objects...

Estimating People Flow from Spatiotemporal Population Data via Collective Graphical Mixture Models
Tomoharu Iwata, Hitoshi Shimizu, Futoshi Naya, Naonori Ueda
Article No.: 2
DOI: 10.1145/3080555

Thanks to the prevalence of mobile phones and GPS devices, spatiotemporal population data can be obtained easily. In this article, we propose a mixture of collective graphical models for estimating people flow from spatiotemporal population data....

Section: Regular Papers

A Layered Approach for More Robust Generation of Road Network Maps from Vehicle Tracking Data
Sophia Karagiorgou, Dieter Pfoser, Dimitrios Skoutas
Article No.: 3
DOI: 10.1145/3061713

Nowadays, large amounts of tracking data are generated via GPS-enabled devices and other advanced tracking technologies. These constitute a rich source for inferring the structure of transportation networks. In this work, we present a novel...