The design and analysis of spatial data structures
The design and analysis of spatial data structures
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
The SR-tree: an index structure for high-dimensional nearest neighbor queries
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Distance browsing in spatial databases
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
Similarity Indexing with the SS-tree
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
K-Nearest Neighbor Search for Moving Query Point
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
IEEE Transactions on Knowledge and Data Engineering
Continuous nearest neighbor search
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Spatial search processing in embedded devices
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Privacy-preserving data-oblivious geometric algorithms for geographic data
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
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In this paper, we present a kNN search method called the dual-heap kNN method, which is used in an embedded database management system (DBMS) for in-vehicle information systems. The dual-heap kNN method is based on two conventional kNN methods: (1) the RKV method and (2) the HS method. The RKV method and the HS method based on depth-first traversal and best-first traversal, respectively, shorten the search time. Our method not only shortens the search time but also reduces the capacity of the memory usage. Our simulation experiments suggest that our method results in the same number of disk accesses as that of the HS method, which is up to 12% smaller than the RKV method. Our method results in a memory usage capacity that is up to 24% larger than that of the RKV method and up to 68% smaller than that of the HS method. In addition, our prototype evaluation using actual data indicates that our method is applicable to in-vehicle information systems.