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» Algorithms for Querying by Spatial Structure
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147
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COMSIS
2010
15 years 2 months ago
3D point pattern matching based on spatial geometric flexibility
We propose a new method for matching two 3D point sets of identical cardinality with global similarity but local non-rigid deformations and distribution errors. This problem arises...
Xiaopeng Wei, Xiaoyong Fang, Qiang Zhang, Dongshen...
224
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SIGMOD
2006
ACM
162views Database» more  SIGMOD 2006»
16 years 4 months ago
Efficient query processing in geographic web search engines
Geographic web search engines allow users to constrain and order search results in an intuitive manner by focusing a query on a particular geographic region. Geographic search tec...
Yen-Yu Chen, Torsten Suel, Alexander Markowetz
161
Voted
PVLDB
2010
120views more  PVLDB 2010»
15 years 3 months ago
EXTRUCT: Using Deep Structural Information in XML Keyword Search
Users who are unfamiliar with database query languages can search XML data sets using keyword queries. Previous work has shown that current XML keyword search methods, although in...
Arash Termehchy, Marianne Winslett
132
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WWW
2006
ACM
16 years 5 months ago
Online mining of frequent query trees over XML data streams
In this paper, we proposed an online algorithm, called FQT-Stream (Frequent Query Trees of Streams), to mine the set of all frequent tree patterns over a continuous XML data strea...
Hua-Fu Li, Man-Kwan Shan, Suh-Yin Lee
CGF
2006
98views more  CGF 2006»
15 years 4 months ago
An Improved Physically-Based Soft Shadow Volume Algorithm
We identify and analyze several performance problems in a state-of-the-art physically-based soft shadow volume algorithm, and present an improved method that alleviates these prob...
Jaakko Lehtinen, Samuli Laine, Timo Aila