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» The Structure of Factor Oracles
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118
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STOC
2001
ACM
139views Algorithms» more  STOC 2001»
16 years 4 months ago
Approximate distance oracles
Let G = (V, E) be an undirected weighted graph with |V | = n and |E| = m. Let k 1 be an integer. We show that G = (V, E) can be preprocessed in O(kmn1/k ) expected time, construc...
Mikkel Thorup, Uri Zwick
149
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ENTCS
2008
73views more  ENTCS 2008»
15 years 3 months ago
Oracle-Based Partial Evaluation
We present Oracle-Based Partial Evaluation (OBPE), a novel approach to on-line Partial Evaluation (PE) which decides the control strategy to use for each call pattern by using an ...
Claudio Ochoa, Germán Puebla
119
Voted
FOCS
1993
IEEE
15 years 7 months ago
On Bounded Queries and Approximation
This paper investigates the computational complexity of approximating several NPoptimization problems using the number of queries to an NP oracle as a complexity measure. The resu...
Richard Chang, William I. Gasarch
133
Voted
VLDB
2000
ACM
166views Database» more  VLDB 2000»
15 years 7 months ago
Oracle8i Index-Organized Table and Its Application to New Domains
Primary B+ -tree, a variant of B+ -tree structure with row data in leaf blocks, is an ideal storage organization for queries involving exact match and/or range search on primary k...
Jagannathan Srinivasan, Souripriya Das, Chuck Frei...
132
Voted
ICASSP
2008
IEEE
15 years 10 months ago
Oracle estimation of adaptive cosine packet transforms for underdetermined audio source separation
We address the problem of instantaneous, underdetermined audio source separation by time-frequency masking. Using oracle estimators, we determine experimental upper performance bo...
Andrew Nesbit, Mark D. Plumbley