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IDA
2010
Springer
13 years 10 months ago
Oracle Coached Decision Trees and Lists
This paper introduces a novel method for obtaining increased predictive performance from transparent models in situations where production input vectors are available when building...
Ulf Johansson, Cecilia Sönströd, Tuve L&...
VLDB
1998
ACM
126views Database» more  VLDB 1998»
14 years 1 months ago
Materialized Views in Oracle
Oracle Materialized Views (MVs) are designed for data warehousing and replication. For data warehousing, MVs based on inner/outer equijoins with optional aggregation, can be refre...
Randall G. Bello, Karl Dias, Alan Downing, James J...
ICASSP
2008
IEEE
14 years 3 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
PROVSEC
2009
Springer
14 years 1 months ago
Oracle Separation in the Non-uniform Model
Abstract. Oracle separation methods are used in cryptography to rule out blackbox reductions between cryptographic primitives. It is sufficient to find an oracle relative to whic...
Ahto Buldas, Sven Laur, Margus Niitsoo
ICML
2009
IEEE
14 years 9 months ago
Boosting with structural sparsity
Despite popular belief, boosting algorithms and related coordinate descent methods are prone to overfitting. We derive modifications to AdaBoost and related gradient-based coordin...
John Duchi, Yoram Singer