Gini covariance matrix and its affine equivariant version
نویسندگان
چکیده
منابع مشابه
Influence Function and Asymptotic Efficiency of the Affine Equivariant Rank Covariance Matrix
Visuri, Koivunen and Oja (2003) proposed and illustrated the use of the affine equivariant rank covariance matrix (RCM) in classical multivariate inference problems. The RCM was shown to be asymptotically multinormal but explicit formulas for the limiting variances and covariances were not given. In this paper the influence functions and the limiting variances and covariances of the RCM and the...
متن کاملAffine Stratifications and equivariant vector bundles on
of the Dissertation Affine Stratifications and equivariant vector bundles on the moduli of principally polarized abelian varieties by Anant Atyam Doctor of Philosophy in Mathematics Stony Brook University 2014 We explicitly construct a locally closed affine stratification of the coarse moduli space of principally polarized complex abelian four folds A4 and using [32], produce an upper bound for...
متن کاملA Note on Affine Quotients and Equivariant Double Fibrations
We consider two linear algebraic groups G and G over the field of complex numbers, both of which are reductive. Take a finite dimensional rational representation W of G × G. Let Y = W//G := SpecC[W ] and X = W//G := SpecC[W ] ′ be the affine quotients. Since the action of G and G commutes on W , the quotient space X (respectively Y ) naturally inherits the action of G (respectively G). In this ...
متن کاملThe intraclass covariance matrix.
Introduced by C.R. Rao in 1945, the intraclass covariance matrix has seen little use in behavioral genetic research, despite the fact that it was developed to deal with family data. Here, I reintroduce this matrix, and outline its estimation and basic properties for data sets on pairs of relatives. The intraclass covariance matrix is appropriate whenever the research design or mathematical mode...
متن کاملOn GKM Description of the Equivariant Cohomology of Affine Flag Varieties and Affine Springer Fibers
For a projective variety endowed with a torus action, the equivariant cohomology is determined by the fixed points of codimension 1 subtori. Especially, when the fixed points of the torus are finite and fixed varieties under the action of codimension 1 subtori have dimension less than or equal to 2, equivariant cohomology can be described by discrete conditions on the pair of fixed points via G...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Statistical Papers
سال: 2016
ISSN: 0932-5026,1613-9798
DOI: 10.1007/s00362-016-0842-z