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Ensemble construction via designed output distortion

Ensemble construction via designed output distortion
Ensemble construction via designed output distortion
A new technique for generating regression ensembles is introduced in the present paper. The technique is based on earlier work on promoting model diversity through injection of noise into the outputs; it differs from the earlier methods in its rigorous requirement that the mean displacements applied to any data points output value be exactly zero.
It is illustrated how even the introduction of extremely large displacements may lead to prediction accuracy superior to that achieved by bagging.
It is demonstrated how ensembles of models with very high bias may have much better prediction accuracy than single models of the same bias-defying the conventional belief that ensembling high bias models is not purposeful. Finally is outlined how the technique may be applied to classification.
computer science
0302-9743
286-295
Christensen, Stefan W.
eec9c1f7-07c8-4a94-a06b-49c29a315c7a
Christensen, Stefan W.
eec9c1f7-07c8-4a94-a06b-49c29a315c7a

Christensen, Stefan W. (2003) Ensemble construction via designed output distortion. Lecture Notes in Computer Science, 2709, 286-295.

Record type: Article

Abstract

A new technique for generating regression ensembles is introduced in the present paper. The technique is based on earlier work on promoting model diversity through injection of noise into the outputs; it differs from the earlier methods in its rigorous requirement that the mean displacements applied to any data points output value be exactly zero.
It is illustrated how even the introduction of extremely large displacements may lead to prediction accuracy superior to that achieved by bagging.
It is demonstrated how ensembles of models with very high bias may have much better prediction accuracy than single models of the same bias-defying the conventional belief that ensembling high bias models is not purposeful. Finally is outlined how the technique may be applied to classification.

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Published date: 2003
Keywords: computer science

Identifiers

Local EPrints ID: 19928
URI: https://eprints.soton.ac.uk/id/eprint/19928
ISSN: 0302-9743
PURE UUID: d16f99b2-269a-4fb3-ad59-10f2e0fcdf20

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Date deposited: 24 Feb 2006
Last modified: 17 Jul 2017 16:30

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