Computational geometry: an introduction
Computational geometry: an introduction
ACM Transactions on Database Systems (TODS)
A practical divide-and-conquer algorithm for the rectangle intersection problem
Information Sciences: an International Journal
The design and analysis of spatial data structures
The design and analysis of spatial data structures
The R*-tree: an efficient and robust access method for points and rectangles
SIGMOD '90 Proceedings of the 1990 ACM SIGMOD international conference on Management of data
A comparison of spatial query processing techniques for native and parameter spaces
SIGMOD '90 Proceedings of the 1990 ACM SIGMOD international conference on Management of data
A qualitative comparison study of data structures for large line segment databases
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Efficient processing of spatial joins using R-trees
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
CIKM '93 Proceedings of the second international conference on Information and knowledge management
Spatial joins using seeded trees
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
UNIX internals: the new frontiers
UNIX internals: the new frontiers
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Partition based spatial-merge join
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Sibling clustering of tree-based spatial indexes for efficient spatial query processing
Proceedings of the seventh international conference on Information and knowledge management
Processing and optimization of multiway spatial joins using R-trees
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Integration of spatial join algorithms for processing multiple inputs
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Selectivity estimation in spatial databases
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Theory and practice of I/O-efficient algorithms for multidimensional batched searching problems
Proceedings of the ninth annual ACM-SIAM symposium on Discrete algorithms
The Grid File: An Adaptable, Symmetric Multikey File Structure
ACM Transactions on Database Systems (TODS)
R-trees: a dynamic index structure for spatial searching
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
PROBE Spatial Data Modeling and Query Processing in an Image Database Application
IEEE Transactions on Software Engineering
Join Strategies on KB-Tree Indexed Relations
Proceedings of the Fifth International Conference on Data Engineering
Proceedings of the Seventh International Conference on Data Engineering
A New Algorithm for Computing Joins with Grid Files
Proceedings of the Ninth International Conference on Data Engineering
Efficient Computation of Spatial Joins
Proceedings of the Ninth International Conference on Data Engineering
Spatial Joins Using R-trees: Breadth-First Traversal with Global Optimizations
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Scalable Sweeping-Based Spatial Join
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
The R+-Tree: A Dynamic Index for Multi-Dimensional Objects
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
Worst-Case External-Memory Priority Queues
SWAT '98 Proceedings of the 6th Scandinavian Workshop on Algorithm Theory
The Buffer Tree: A New Technique for Optimal I/O-Algorithms (Extended Abstract)
WADS '95 Proceedings of the 4th International Workshop on Algorithms and Data Structures
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Generating Seeded Trees from Data Sets
SSD '95 Proceedings of the 4th International Symposium on Advances in Spatial Databases
External-memory computational geometry
SFCS '93 Proceedings of the 1993 IEEE 34th Annual Foundations of Computer Science
STL Tutorial and Reference Guide: C++ Programming with the Standard Template Library
STL Tutorial and Reference Guide: C++ Programming with the Standard Template Library
Planar Point Location for Large Data Sets: To Seek or Not to Seek
WAE '00 Proceedings of the 4th International Workshop on Algorithm Engineering
External Memory Data Structures
ESA '01 Proceedings of the 9th Annual European Symposium on Algorithms
Implementing I/O-efficient Data Structures Using TPIE
ESA '02 Proceedings of the 10th Annual European Symposium on Algorithms
Query Responsive Index Structures
GIScience '08 Proceedings of the 5th international conference on Geographic Information Science
| Hi-index | 0.01 |
Most spatial join algorithms either assume the existence of a spatial index structure that is traversed during the join process, or solve the problem by sorting, partitioning, or on-the-fly index construction. In this paper, we develop a simple plane-sweeping algorithm that unifies the index-based and non-index based approaches. This algorithm processes indexed as well as non-indexed inputs, extends naturally to multiway joins, and can be built easily from a few standard operations. We present the results of a comparative study of the new algorithm with several index-based and non-index based spatial join algorithms. We consider a number of factors, including the relative performance of CPU and disk, the quality of the spatial indexes, and the sizes of the input relations. An important conclusion from our work is that using an index-based approach whenever indexes are available does not always lead to the best execution time, and hence we propose the use of a simple cost model to decide when to follow an index-based approach.