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» Approximate distance oracles
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VMV
2003
154views Visualization» more  VMV 2003»
13 years 9 months ago
Piecewise Linear Approximation of Signed Distance Fields
The signed distance field of a surface can effectively support many geometry processing tasks such as decimation, smoothing, and Boolean operations since it provides efficient a...
Jianhua Wu, Leif Kobbelt
SEMWEB
2007
Springer
14 years 2 months ago
Approximate Measures of Semantic Dissimilarity under Uncertainty
Abstract. We propose semantic distance measures based on the criterion of approximate discernibility and on evidence combination. In the presence of incomplete knowledge, the dista...
Nicola Fanizzi, Claudia d'Amato, Floriana Esposito
STOC
2009
ACM
182views Algorithms» more  STOC 2009»
14 years 9 months ago
Approximating edit distance in near-linear time
We show how to compute the edit distance between two strings of length n up to a factor of 2 ~O( log n) in n1+o(1) time. This is the first sub-polynomial approximation algorithm f...
Alexandr Andoni, Krzysztof Onak
ICALP
2004
Springer
14 years 1 months ago
The Black-Box Complexity of Nearest Neighbor Search
We define a natural notion of efficiency for approximate nearest-neighbor (ANN) search in general n-point metric spaces, namely the existence of a randomized algorithm which answ...
Robert Krauthgamer, James R. Lee
DEBU
2010
170views more  DEBU 2010»
13 years 8 months ago
Roads Belong in Databases
The popularity of location-based services and the need to perform real-time processing on them has led to an interest in queries on road networks, such as finding shortest paths a...
Jagan Sankaranarayanan, Hanan Samet