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政大典藏 > College of Commerce > Department of Statistics > Periodical Articles > Item 140.119/17869

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/17869

Title:	A Similarity Measure Based on Species Proportions
Authors:	Yue, Jack C.;Clayton M. 余清祥
Contributors:	統計系
Date:	2005
Issue Date:	2008-12-19 09:01:36 (UTC+8)
Abstract:	There are several indices for measuring the similarity of two populations, including the ratio of the number of shared species to the number of distinct species (Jaccard`s index) and the conditional probability of observing a shared species (Smith et al., 1996). However, these indices only take into account the number of species and species proportions of shared species. In this article, we propose a new similarity index which includes the species proportions of both the shared and non shared species in each population, and also propose a Nonparametric Maximum Likelihood Estimator (NPMLE) for this index. Bootstrap and delta methods are used to evaluate the standard errors of the NPMLE. Based on a loss function, we also compare a class of nonparametric estimators for the proposed index in various situations.
Relation:	Communications in Statistics - Theory and Methods , Volume 34, Issue 11, 2123-2131
Data Type:	article
DOI link:	http://dx.doi.org/10.1080/STA-200066418
DOI:	10.1080/STA-200066418
Appears in Collections:	[Department of Statistics] Periodical Articles

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