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COMGEO
2006
ACM
15 years 4 months ago
Cost prediction for ray shooting in octrees
The ray shooting problem arises in many different contexts and is a bottleneck of ray tracing in computer graphics. Unfortunately, theoretical solutions to the problem are not ver...
Boris Aronov, Hervé Brönnimann, Allen ...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
15 years 8 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
WWW
2007
ACM
16 years 5 months ago
Automatic search engine performance evaluation with click-through data analysis
Performance evaluation is an important issue in Web search engine researches. Traditional evaluation methods rely on much human efforts and are therefore quite time-consuming. Wit...
Yiqun Liu, Yupeng Fu, Min Zhang, Shaoping Ma, Liyu...
WWW
2001
ACM
16 years 4 months ago
Finding authorities and hubs from link structures on the World Wide Web
Recently, there have been a number of algorithms proposed for analyzing hypertext link structure so as to determine the best "authorities" for a given topic or query. Wh...
Allan Borodin, Gareth O. Roberts, Jeffrey S. Rosen...
SIGMOD
2005
ACM
136views Database» more  SIGMOD 2005»
16 years 4 months ago
Peer-to-peer management of XML data: issues and research challenges
Peer-to-peer (p2p) systems are attracting increasing attention as an efficient means of sharing data among large, diverse and dynamic sets of users. The widespread use of XML as a...
Georgia Koloniari, Evaggelia Pitoura