Tõnu Kollo
University of Tartu
26 Papers
79 Citations
Tõnu Kollo is an academic researcher from University of Tartu. The author has contributed to research in topics: Multivariate statistics & Matrix t-distribution. The author has an hindex of 11, co-authored 26 publications. Previous affiliations of Tõnu Kollo include University of Amsterdam.
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Papers
•Book
Advanced Multivariate Statistics with Matrices
Tõnu Kollo,Dietrich von Rosen,M. Hazewinkel +2 more
- 19 May 2005
TL;DR: In this paper, the authors present a basic matrix theory and linear algebra for multivariate linear models, including multivariate distributions, distribution expansions, and multiplicative linear models (MLMs).
462
Parameter Estimation and Application of the Multivariate Skew t-Copula
Tõnu Kollo,Gaida Pettere +1 more
- 01 Jan 2010
TL;DR: A multivariate t-copula which is based on the skew t-distribution introduced in [1].
32
•Journal Article
Density expansions based on the multivariate skew normal distribution
Arjun K. Gupta,Tõnu Kollo +1 more
TL;DR: In this article, the multivariate skew normal distribution is used as a basis for density expansion and a short summary of main properties of the distribution is given and the first three derivatives of the MNS density function are presented.
31
Approximating by the Wishart distribution
Tõnu Kollo,Dietrich von Rosen +1 more
TL;DR: In this paper, an approximation of the Wishart distribution with matrix derivatives, powers of Kronecker products and Taylor expansions of functions with matrix argument is presented with the help of matrix derivatives.
Approximations to the distribution of the sample correlation matrix
Tõnu Kollo,Kaire Ruul +1 more
TL;DR: In this article, multivariate density expansions for the sample correlation matrix R are derived, where the density of R is expressed through multivariate normal and through Wishart distributions, and the main terms of the first three cumulants of R are obtained in matrix form.
17