Paper Info
Title
Polygon-Based Query Evaluation over Geospatial Data Using Distributed Hash Tables
Abstract
Data volumes in the geosciences and related domains have grown significantly as sensing equipment designed to continuously gather readings and produce data streams for geographic regions have proliferated. The storage requirements imposed by these datasets vastly outstrip the capabilities of a single computing resource, leading to the use and development of distributed storage frameworks composed of commodity hardware. In this paper, we explore the challenges associated with supporting geospatial retrievals constrained by arbitrary polygonal bounds on a distributed hash table architecture. Our solution involves novel distribution and partitioning of these voluminous datasets, thus enabling the use of a lightweight, distributed spatial indexing structure, the geoavailability grid. Geoavailability grids provide global, coarse-grained representations of the spatial information stored within these ever-expanding datasets, allowing the search space of distributed queries to be reduced by eliminating storage resources that do not hold relevant information. This results in improved response times and more effective utilization of available resources. Geoavailability grids are also applicable in non-distributed settings for local lookup functionality, performing competitively with other leading spatial indexing technology.
Year
DOI
Venue
2013
10.1109/UCC.2013.46
UCC
Keywords
Field
DocType
ever-expanding datasets,hash tables,leading spatial indexing technology,storage requirement,spatial information,geoavailability grid,voluminous datasets,storage resource,geospatial data,data volume,data stream,spatial indexing structure,polygon-based query evaluation,indexing,distributed databases,data structures,geospatial analysis,time series data,cloud infrastructure
Geospatial analysis,Computer science,Distributed data store,Search engine indexing,Distributed algorithm,Distributed database,Database,Grid,Distributed hash table,Hash table
Conference
Citations 
PageRank 
References 
8
0.66
14
Authors
3
Name
Order
Citations
PageRank
Matthew Malensek19310.44
Sangmi Lee Pallickara217024.46
Shrideep Pallickara383792.72