29 citations · 64 across the 15 of their papers we have counts for
5 papers · 1 filter
Least square estimators in linear regression models under negatively superadditive dependent random observations
Karine Bertin, Soledad Torres, Lauri Viitasaari
In this article we study the asymptotic behaviour of the least square estimator in a linear regression model based on random observation instances. We provide mild assumptions on t…
Latent Model Extreme Value Index Estimation
Joni Virta, Niko Lietzén, Lauri Viitasaari +1
We propose a novel strategy for multivariate extreme value index estimation. In applications such as finance, volatility and risk present in the components of a multivariate time s…
Modeling temporally uncorrelated components for complex-valued stationary processes
Niko Lietzén, Lauri Viitasaari, Pauliina Ilmonen
We consider a complex-valued linear mixture model, under discrete weakly stationary processes. We recover latent components of interest, which have undergone a linear mixing. We st…
Vector-valued Generalised Ornstein-Uhlenbeck Processes
Marko Voutilainen, Lauri Viitasaari, Pauliina Ilmonen +2
Generalisations of the Ornstein-Uhlenbeck process defined through Langevin equation such as fractional Ornstein-Uhlenbeck processes, have recently receiv…
On model fitting and estimation of strictly stationary processes
Marko Voutilainen, Lauri Viitasaari, Pauliina Ilmonen
Stationary processes have been extensively studied in the literature. Their applications include modeling and forecasting numerous real life phenomena such as natural disasters, sa…