Augmented embedding of dissimilarity data into (pseudo-)Euclidean spaces

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Augmented embedding of dissimilarity data into (pseudo-)Euclidean spaces

Conference Paper (2006)

Author(s)

A Harol (TU Delft - Multimedia Computing)

EM Pekalska (TU Delft - Multimedia Computing)

S Verzakov (TU Delft - Multimedia Computing)

Bob Duin (TU Delft - Multimedia Computing)

Multimedia Computing

CWTS 0.75 <= JFIS < 2.00 Conference contrib. refereed

To reference this document use:

https://resolver.tudelft.nl/uuid:3f240841-f913-4035-974e-7dacf5e4d509

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Publication Year

2006

Multimedia Computing

Pages (from-to)

613-621

Abstract

Pairwiseproximitiesdescribethepropertiesofobjectsintermsoftheirsimilarities.Byusingdi¿erentdistance-basedfunctionsonemayencodedi¿erentcharacteristicsofagivenproblem.However,tousetheframeworkofstatisticalpatternrecognitionsomevectorrepresentationshouldbeconstructed.Oneofthesimplestwaystodothatistode¿neanisometricembeddingtosomevectorspace.Inthiswork,wewillfocusonalinearembeddingintoa(pseudo-)Euclideanspace.
Thisisusuallywellde¿nedfortrainingdata.Someinadequacy,however,appearswhenprojectingnewortestobjectsduetotheresultingprojectionerrors.Inthispaperweproposeanaugmentedembeddingalgorithmthatenlargesthedimensionalityofthespacesuchthattheresultingprojectionerrorvanishes.Ourpreliminaryresultsshowthatitmayleadtoabetterclassi¿cationaccuracy,especiallyfordatawithhighintrinsicdimensionality.

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