NDLI: A nonparametric density model for classification in a high dimensional space

Content Provider	IEEE Xplore Digital Library
Author	Tsuda, K. Minohs, M.
Copyright Year	1997
Description	Author affiliation: Dept. of Inf. Sci., Kyoto Univ., Japan (Tsuda, K.)
Abstract	When the dimensionality of the feature space increases and takes beyond a certain point, the classification performance of a parametric classifier begins to deteriorate. This is because the number of parameters of the classifier depends on the dimensionality and gets too large in a high dimensional space. To obtain the density value at the point of interest without deriving the parameters, we propose a nonparametric Gaussian density model, where the sum of the log-density values at two points is described, without any parameter, by a function of the distance between the two points. The density value at the point of interest is estimated from the distance between the point and each of the training sample points using this model. We will empirically show that the density values estimated by the nonparametric model are more accurate than those by the parametric model in a high dimensional space. In a character recognition experiment, our nonparametric classifier achieved higher classification accuracy in comparison with the parametric classifier.
Starting Page	1082
Ending Page	1086
File Size	399418
Page Count	5
File Format	PDF
ISBN	0818678984
DOI	10.1109/ICDAR.1997.620675
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-08-18
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pattern recognition Density functional theory Parameter estimation Covariance matrix Information science Electronic mail Parametric statistics Extraterrestrial measurements Bayesian methods
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in