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SIGMOD
1997
ACM
113views Database» more  SIGMOD 1997»
15 years 10 months ago
Size Separation Spatial Join
The Partitioned Based Spatial-Merge Join (PBSM) of Patel and DeWitt and the Size Separation Spatial Join (S3 J) of Koudas and Sevcik are considered to be among the most efficient ...
Nick Koudas, Kenneth C. Sevcik
181
Voted
VLDB
1995
ACM
116views Database» more  VLDB 1995»
15 years 10 months ago
W3QS: A Query System for the World-Wide Web
The World-Wide Web (WWW) is an ever growing, distributed, non-administered, global information resource. It resides on the worldwide computer network and allows access to heteroge...
David Konopnicki, Oded Shmueli
VLDB
1995
ACM
194views Database» more  VLDB 1995»
15 years 10 months ago
Eager Aggregation and Lazy Aggregation
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
Weipeng P. Yan, Per-Åke Larson
CCS
2010
ACM
15 years 10 months ago
Scene tagging: image-based CAPTCHA using image composition and object relationships
In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
Peter Matthews, Cliff Changchun Zou
EDBT
2009
ACM
119views Database» more  EDBT 2009»
15 years 10 months ago
Unrestricted wavelet synopses under maximum error bound
Constructing Haar wavelet synopses under a given approximation error has many real world applications. In this paper, we take a novel approach towards constructing unrestricted Ha...
Chaoyi Pang, Qing Zhang, David P. Hansen, Anthony ...
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