The Internet of Things (IoT) has recently received significant attention. An IoT device may
possess an array of sensors that for example monitors the air temperature, carbon monoxide …

Three-dimensional (3D) pipe network modeling plays an essential part in high performance-
based smart city applications. Given that massive 3D pipe networks tend to be difficult to …

The paper proposes Riso-Tree, a generic indexing framework for geographic knowledge
graphs. Riso-Tree enables fast execution of graph queries that involve spatial predicates …

With the ubiquity of spatial data, vertexes or edges in graphs can possess spatial location
attributes side by side with other non-spatial attributes. For instance, as of June 2018, the …

Graphs are widely used to model data in many application domains. Thanks to the wide
spread use of GPS-enabled devices, many applications assign spatial attributes to graph …

Given a utility network and one or more starting points that define where analysis should
begin, the problem of analyzing utility networks entails assembling a subset of network …

Utility systems such as electric, fiber/telco, gas, and water require the realistic modeling of
network attributes or values over distance. For example, consider hydraulic pressure in a …

Spatial data is fundamental in many applications like map services, land resource
management, etc. Meanwhile, spatial data inherently comes with abundant context …

ACM SIGSPATIAL Cup 2018 was the 7th GIS-focused algorithm contest hosted by the 26th
ACM SIGSPATIAL International Conference on Advances in Geographic Information …

We present a fast linear time algorithm that uses a block-cut tree for identifying upstream
features from a set of starting points in a network. Our implementation has been parallelized …