User profiles for A. Hyvärinen

Aapo Hyvarinen

- Verified email at helsinki.fi - Cited by 69262

Antti-Pekka Hyvärinen

- Verified email at fmi.fi - Cited by 4458

Independent component analysis: recent advances

A Hyvärinen - … Transactions of the Royal Society A …, 2013 - royalsocietypublishing.org
Independent component analysis is a probabilistic method for learning a linear transform of
a random vector. The goal is to find components that are maximally independent and non-…

Fast and robust fixed-point algorithms for independent component analysis

A Hyvarinen - IEEE transactions on Neural Networks, 1999 - ieeexplore.ieee.org
Independent component analysis (ICA) is a statistical method for transforming an observed
multidimensional random vector into components that are statistically as independent from …

Independent component analysis: algorithms and applications

A Hyvärinen, E Oja - Neural networks, 2000 - Elsevier
A fundamental problem in neural network research, as well as in many other disciplines, is
finding a suitable representation of multivariate data, ie random vectors. For reasons of …

General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI)–integrating aerosol research from nano to global …

…, C Hoose, M Hu, A Hyvärinen… - Atmospheric …, 2011 - acp.copernicus.org
In this paper we describe and summarize the main achievements of the European Aerosol
Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January …

Indoor fungi: companions and contaminants

A Nevalainen, M Täubel, A Hyvärinen - Indoor air, 2015 - Wiley Online Library
This review discusses the role of fungi and fungal products in indoor environments, especially
as agents of human exposure. Fungi are present everywhere, and knowledge for indoor …

[BOOK][B] Independent component analysis

A Hyvärinen, J Hurri, PO Hoyer, A Hyvärinen, J Hurri… - 2009 - Springer
In this chapter, we discuss a statistical generative model called independent component
analysis. It is basically a proper probabilistic formulation of the ideas underpinning sparse …

[PDF][PDF] Estimation of non-normalized statistical models by score matching.

A Hyvärinen, P Dayan - Journal of Machine Learning Research, 2005 - jmlr.org
One often wants to estimate statistical models where the probability density function is
known only up to a multiplicative normalization constant. Typically, one then has to resort to …

[PDF][PDF] Probabilistic non-linear principal component analysis with Gaussian process latent variable models.

N Lawrence, A Hyvärinen - Journal of machine learning research, 2005 - jmlr.org
Summarising a high dimensional data set with a low dimensional embedding is a standard
approach for exploring its structure. In this paper we provide an overview of some existing …

Validating the independent components of neuroimaging time series via clustering and visualization

J Himberg, A Hyvärinen, F Esposito - Neuroimage, 2004 - Elsevier
Recently, independent component analysis (ICA) has been widely used in the analysis of
brain imaging data. An important problem with most ICA algorithms is, however, that they are …

[PDF][PDF] Noise-contrastive estimation of unnormalized statistical models, with applications to natural image statistics.

MU Gutmann, A Hyvärinen - Journal of machine learning research, 2012 - jmlr.org
We consider the task of estimating, from observed data, a probabilistic model that is parameterized
by a finite number of parameters. In particular, we are considering the situation where …