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ICDE
1999
IEEE
113views Database» more  ICDE 1999»
14 years 9 months ago
I/O Complexity for Range Queries on Region Data Stored Using an R-tree
In this paper we study the node distribution of an Rtree storing region data, like for instance islands, lakes or human-inhabited areas. We will show that real region datasets are...
Guido Proietti, Christos Faloutsos
DKE
2008
87views more  DKE 2008»
13 years 7 months ago
Region clustering based evaluation of multiple top-N selection queries
In many database applications, there are opportunities for multiple top-N queries to be evaluated at the same time. Often it is more cost effective to evaluate multiple such queri...
Liang Zhu, Weiyi Meng, Wenzhu Yang, Chunnian Liu
ACSAC
2010
IEEE
13 years 4 months ago
Heap Taichi: exploiting memory allocation granularity in heap-spraying attacks
Heap spraying is an attack technique commonly used in hijacking browsers to download and execute malicious code. In this attack, attackers first fill a large portion of the victim...
Yu Ding, Tao Wei, Tielei Wang, Zhenkai Liang, Wei ...
ACL
2000
13 years 9 months ago
An Improved Parser for Data-Oriented Lexical-Functional Analysis
We present an LFG-DOP parser which uses fragments from LFG-annotated sentences to parse new sentences. Experiments with the Verbmobil and Homecentre corpora show that (1) Viterbi ...
Rens Bod
GIS
2010
ACM
13 years 6 months ago
Detecting nearly duplicated records in location datasets
The quality of a local search engine, such as Google and Bing Maps, heavily relies on its geographic datasets. Typically, these datasets are obtained from multiple sources, e.g., ...
Yu Zheng, Xixuan Fen, Xing Xie, Shuang Peng, James...