This paper demonstrates Pynapple-G, an open-source library for scalable spatial grouping
queries based on Apache Sedona (formerly known as GeoSpark). We demonstrate two …

This paper studies the spatial group-by query over complex polygons. Given a set of spatial
points and a set of polygons, the spatial group-by query returns the number of points that lie …

The amount of data in the world is increasing exponentially, a large portion of this data
comes from the interactions over mobile devices and the ubiquitous IoT applications …

Spatial data analysis plays a crucial role in understanding the complex dynamics of our
world across various fields including geography, urban planning, environmental science …

I joined the University of California, Riverside (UCR) as a tenure-track professor of Computer
Science and Engineering and a co-founder for the UCR Center for Geospatial Sciences …