106 citations · 316 across the 15 of their papers we have counts for
16 papers
UrbanTrace: LLM-Assisted Discovery and Semantics-Aware Integration of Spatial Data
Sonia Castelo, Eden Wu, Joao Rulff +3
Urban decision-making requires integrating heterogeneous spatial data. While current GIS tools handle geometric computation efficiently, they lack the semantic reasoning to guide c…
Query Rewriting via LLMs
Sriram Dharwada, Himanshu Devrani, Jayant Haritsa +1
When complex SQL queries suffer slow executions despite query optimization, DBAs typically invoke automated query rewriting tools to recommend ``lean'' equivalents that are conduci…
TopoMap++: A faster and more space efficient technique to compute projections with topological guarantees
Vitoria Guardieiro, Felipe Inagaki de Oliveira, Harish Doraiswamy +2
High-dimensional data, characterized by many features, can be difficult to visualize effectively. Dimensionality reduction techniques, such as PCA, UMAP, and t-SNE, address this ch…
GPU-Powered Spatial Database Engine for Commodity Hardware: Extended Version
Harish Doraiswamy, Juliana Freire
Given the massive growth in the volume of spatial data, there is a great need for systems that can efficiently evaluate spatial queries over large data sets. These queries are noto…
Topological Representations of Local Explanations
Peter Xenopoulos, Gromit Chan, Harish Doraiswamy +3
Local explainability methods -- those which seek to generate an explanation for each prediction -- are becoming increasingly prevalent due to the need for practitioners to rational…
UrbanRama: Navigating Cities in Virtual Reality
Shaoyu Chen, Fabio Miranda, Nivan Ferreira +8
Exploring large virtual environments, such as cities, is a central task in several domains, such as gaming and urban planning. VR systems can greatly help this task by providing an…
Valuing Player Actions in Counter-Strike: Global Offensive
Peter Xenopoulos, Harish Doraiswamy, Claudio Silva
Esports, despite its expanding interest, lacks fundamental sports analytics resources such as accessible data or proven and reproducible analytical frameworks. Even Counter-Strike:…
The Case for Distance-Bounded Spatial Approximations
Eleni Tzirita Zacharatou, Andreas Kipf, Ibrahim Sabek +3
Spatial approximations have been traditionally used in spatial databases to accelerate the processing of complex geometric operations. However, approximations are typically only us…
TopoMap: A 0-dimensional Homology Preserving Projection of High-Dimensional Data
Harish Doraiswamy, Julien Tierny, Paulo J. S. Silva +2
Multidimensional Projection is a fundamental tool for high-dimensional data analytics and visualization. With very few exceptions, projection techniques are designed to map data fr…
Urban Mosaic: Visual Exploration of Streetscapes Using Large-Scale Image Data
Fabio Miranda, Maryam Hosseini, Marcos Lage +3
Urban planning is increasingly data driven, yet the challenge of designing with data at a city scale and remaining sensitive to the impact at a human scale is as important today as…
A GPU-friendly Geometric Data Model and Algebra for Spatial Queries: Extended Version
Harish Doraiswamy, Juliana Freire
The availability of low cost sensors has led to an unprecedented growth in the volume of spatial data. However, the time required to evaluate even simple spatial queries over large…
Shadow Accrual Maps: Efficient Accumulation of City-Scale Shadows Over Time
Fabio Miranda, Harish Doraiswamy, Marcos Lage +3
Large scale shadows from buildings in a city play an important role in determining the environmental quality of public spaces. They can be both beneficial, such as for pedestrians…
Unwind: Interactive Fish Straightening
Francis Williams, Alexander Bock, Harish Doraiswamy +5
The ScanAllFish project is a large-scale effort to scan all the world's 33,100 known species of fishes. It has already generated thousands of volumetric CT scans of fish species wh…
SONYC: A System for the Monitoring, Analysis and Mitigation of Urban Noise Pollution
Juan Pablo Bello, Claudio Silva, Oded Nov +5
We present the Sounds of New York City (SONYC) project, a smart cities initiative focused on developing a cyber-physical system for the monitoring, analysis and mitigation of urban…
Data Polygamy: The Many-Many Relationships among Urban Spatio-Temporal Data Sets
Fernando Chirigati, Harish Doraiswamy, Theodoros Damoulas +1
The increasing ability to collect data from urban environments, coupled with a push towards openness by governments, has resulted in the availability of numerous spatio-temporal da…
Urban Pulse: Capturing the Rhythm of Cities
Fabio Miranda, Harish Doraiswamy, Marcos Lage +5
Cities are inherently dynamic. Interesting patterns of behavior typically manifest at several key areas of a city over multiple temporal resolutions. Studying these patterns can gr…