We consider data-visualization systems where a middleware layer translates a frontend
request to a SQL query to a backend database to compute visual results. We study the …

In this paper, we present our experience in indexing the drop-off and pick-up locations of taxi
trips in New York City. The paper presents a comprehensive experimental analysis of classic …

We study the problem of efficient spatial visualization on a large data set stored in a
database using SQL queries with ad-hoc range conditions on numerical attributes, for …

There is an increasing demand to visualize large datasets as human observable reports in
order to quickly draw insights and gain timely awareness from the data. An interactive user …

Query performance is critical in database-supported applications where users need answers
quickly to make timely decisions. For decades, databases have relied heavily on query …

We consider data-visualization systems where a middleware layer translates a frontend
request to a SQL query to a backend database to compute visual results. We study the …

We study the problem of computing a spatial scatterplot on a large dataset for arbitrary
zooming/panning queries. We introduce a general framework called “Rainbow” that …

Spatial data is pervasive. This thesis makes three contributions to the design and
implementation of systems that handle spatial data. First, we study the big-data spatial …

Abstract Apache Hadoop, employing the MapReduce programming paradigm, that has been
widely accepted as the standard framework for analyzing big data in distributed …