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Article: Diagnosing influential observations in quadratic discriminant analysis

TitleDiagnosing influential observations in quadratic discriminant analysis
Authors
Fung, WK
KeywordsCase Deletion
Diagnostic Measures
Outliers And Influential Observations
Quadratic Discriminant Analysis
Simulated Confidence Envelope
Issue Date1996
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/BIOM
Citation
Biometrics, 1996, v. 52 n. 4, p. 1235-1241 How to Cite?
DOI: http://dx.doi.org/10.2307/2532839
AbstractWe propose various diagnostic measures for the identification of observations that are influential for the estimation of probability density functions, probabilities, and log odds in quadratic discriminant analysis. The quantile-quantile (Q-Q) plots together with simulated confidence envelopes are found to be useful for detecting influential observations in a data set of two species of biting flies that are so similar that they are difficult to discriminate morphologically. We find that the omission of even one case in the data set can have a very great effect on the estimated probabilities that the observations belong to a particular group.
Persistent Identifierhttp://hdl.handle.net/10722/172373
ISSN
0006-341X
2023 Impact Factor: 1.4
2023 SCImago Journal Rankings: 1.480
ISI Accession Number ID
WOS:A1996VX80400007
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorFung, WKen_US
dc.date.accessioned2012-10-30T06:22:11Z-
dc.date.available2012-10-30T06:22:11Z-
dc.date.issued1996en_US
dc.identifier.citationBiometrics, 1996, v. 52 n. 4, p. 1235-1241en_US
dc.identifier.issn0006-341Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/172373-
dc.description.abstractWe propose various diagnostic measures for the identification of observations that are influential for the estimation of probability density functions, probabilities, and log odds in quadratic discriminant analysis. The quantile-quantile (Q-Q) plots together with simulated confidence envelopes are found to be useful for detecting influential observations in a data set of two species of biting flies that are so similar that they are difficult to discriminate morphologically. We find that the omission of even one case in the data set can have a very great effect on the estimated probabilities that the observations belong to a particular group.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/BIOMen_US
dc.relation.ispartofBiometricsen_US
dc.rightsBiometrics. Copyright © Blackwell Publishing Ltd.-
dc.subjectCase Deletionen_US
dc.subjectDiagnostic Measuresen_US
dc.subjectOutliers And Influential Observationsen_US
dc.subjectQuadratic Discriminant Analysisen_US
dc.subjectSimulated Confidence Envelopeen_US
dc.titleDiagnosing influential observations in quadratic discriminant analysisen_US
dc.typeArticleen_US
dc.identifier.emailFung, WK: wingfung@hku.hken_US
dc.identifier.authorityFung, WK=rp00696en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.2307/2532839en_US
dc.identifier.scopuseid_2-s2.0-0030448963en_US
dc.identifier.hkuros26792-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030448963&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume52en_US
dc.identifier.issue4en_US
dc.identifier.spage1235en_US
dc.identifier.epage1241en_US
dc.identifier.isiWOS:A1996VX80400007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFung, WK=13310399400en_US
dc.identifier.issnl0006-341X-

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