Hannu Oja

Q: What Schools Are Affiliated With Hannu Oja

Hannu Oja is affiliated with the following schools: Tampere University, University of Turku, University of Oulu, University of Helsinki

Hannu Oja's AcademicInfluence.com Rankings

Hannu Oja

Mathematics

#6907

World Rank

#9481

Historical Rank

Statistics

#861

World Rank

#953

Historical Rank

mathematics Degrees

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Mathematics

Hannu Oja's Degrees

PhD Mathematical Statistics University of Helsinki

Why Is Hannu Oja Influential?

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According to Wikipedia, Hannu Frans Vilhelm Oja is a Finnish mathematical statistician and biostatistician known for his contribution to nonparametric inference, robust statistics, and multivariate statistical methods. He introduced the Oja median for multivariate distributions.

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Hannu Oja's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Descriptive Statistics for Multivariate Distributions (1983) (483)
The role of acute and chronic stress in asthma attacks in children (2000) (433)
Gene-environment interaction in vulnerability to schizophrenia: findings from the Finnish Adoptive Family Study of Schizophrenia. (1997) (231)
Characterisation of human dental stem cells and buccal mucosa fibroblasts. (2008) (211)
Early developmental milestones in adult schizophrenia and other psychoses. A 31-year follow-up of the Northern Finland 1966 Birth Cohort (2001) (181)
Multivariate spatial sign and rank methods (1995) (177)
Multivariate Nonparametric Methods with R: An approach based on spatial signs and ranks (2010) (170)
Sign and rank covariance matrices (2000) (148)
Multivariate Nonparametric Tests (2004) (142)
miR‐193b is an epigenetically regulated putative tumor suppressor in prostate cancer (2010) (140)
Multivariate Nonparametric Methods with R (2010) (127)
Invariant co‐ordinate selection (2009) (112)
Perinatal outcome of pregnancies complicated by vaginal bleeding (1992) (100)
SEMIPARAMETRICALLY EFFICIENT RANK-BASED INFERENCE FOR SHAPE II. OPTIMAL R-ESTIMATION OF SHAPE (2006) (98)
ON THE EFFICIENCY OF MULTIVARIATE SPATIAL SIGN AND RANK TESTS (1997) (95)
Affine Invariant Multivariate Sign and Rank Tests and Corresponding Estimates: a Review (1999) (93)
Is a child's risk of early onset schizophrenia increased in the highest social class? (1997) (93)
Subspace-based direction-of-arrival estimation using nonparametric statistics (2001) (92)
OPERATING TRANSFORMATION RETRANSFORMATION ON SPATIAL MEDIAN AND ANGLE TEST (1998) (87)
On Location, Scale, Skewness and Kurtosis of Univariate Distributions (2016) (86)
A New Performance Index for ICA: Properties, Computation and Asymptotic Analysis (2010) (83)
Risk factors for chronic otitis media with effusion in infancy. Each acute otitis media episode induces a high but transient risk. (1995) (82)
Affine Invariant Multivariate One‐Sample Sign Tests (1994) (75)
Multivariate Nonparametric Tests of Independence (2005) (73)
Fourth Moments and Independent Component Analysis (2014) (71)
Fitting mixture models to birth weight data: a case study. (1991) (64)
AFFINE INVARIANT MULTIVARIATE RANK TESTS FOR SEVERAL SAMPLES (1998) (64)
Tools for Exploring Multivariate Data: The Package ICS (2008) (64)
Chronic otitis media with effusion in infancy. How frequent is it? How does it develop? (1995) (60)
Affine-invariant multivariate one-sample signed-rank tests (1997) (58)
Thought Disorder Index of Finnish adoptees and communication deviance of their adoptive parents (2000) (55)
Sign and Rank Covariance Matrices: Statistical Properties and Application to Principal Components Analysis (2002) (55)
Tests of multinormality based on location vectors and scatter matrices (2007) (53)
Separation of Uncorrelated Stationary time series using Autocovariance Matrices (2014) (51)
Estimation of population attributable fraction (PAF) for disease occurrence in a cohort study design (2010) (50)
Teenage alcohol drinking and non-standard family background. (1994) (50)
Independent component analysis: A statistical perspective (2018) (49)
Sign test of independence between two random vectors (2003) (49)
Public health impact of various risk factors for acute otitis media in northern Finland. (1996) (49)
The finite-sample breakdown point of the Oja bivariate median and of the corresponding half-samples version (1990) (49)
Robust Correlation: Theory and Applications (2016) (48)
Influence functions and efficiencies of the canonical correlation and vector estimates based on scatter and shape matrices (2006) (48)
Bivariate Sign Tests (1989) (47)
Characteristics of multivariate distributions and the invariant coordinate system (2010) (45)
Symmetrised M-estimators of multivariate scatter (2007) (44)
Asymptotic and Bootstrap Tests for the Dimension of the Non-Gaussian Subspace (2017) (44)
On Permutation Tests in Multiple Regression and Analysis of Covariance Problems (1987) (43)
Affine Invariant Multivariate Multisample Sign Tests (1994) (43)
Scatter Matrices and Independent Component Analysis (2016) (43)
Complex-valued ICA based on a pair of generalized covariance matrices (2008) (42)
What is the natural history of recurrent acute otitis media in infancy? (1996) (41)
On Invariant Coordinate System (ICS) Functionals (2012) (40)
Estimates of regression coefficients based on the sign covariance matrix (2002) (40)
New independent component analysis tools for time series (2015) (40)
Deflation-Based FastICA With Adaptive Choices of Nonlinearities (2014) (40)
Ageing and cardiovascular responses to head-up tilt in healthy subjects. (2009) (40)
On the performance indices of ICA and blind source separation (2011) (39)
Statistical properties of a blind source separation estimator for stationary time series (2012) (39)
Deflation-based separation of uncorrelated stationary time series (2014) (37)
Control of the temporal aspect when considering risk factors for acute otitis media. (1993) (37)
Five-year mortality of Finnish schizophrenia patients in the era of deinstitutionalization (2009) (37)
Classification Based on Hybridization of Parametric and Nonparametric Classifiers (2009) (36)
Asymptotic Properties of the Generalized Median in the Case of Multivariate Normality (1985) (35)
Asymptotic theory of the spatial median (2010) (34)
Estimation of the population attributable fraction for mortality in a cohort study using a piecewise constant hazards model. (2010) (34)
Model selection using limiting distributions of second-order blind source separation algorithms (2015) (33)
SAS Macros for Calculation of Population Attributable Fraction in a Cohort Study Design (2011) (32)
A weighted multivariate sign test for cluster-correlated data (2005) (31)
Deflation-based FastICA reloaded (2011) (31)
Invariant Coordinate Selection (2008) (31)
The affine equivariant sign covariance matrix: asymptotic behavior and efficiencies (2003) (31)
Multivariate L1 Statistical Methods: The Package MNM (2011) (31)
Robustifying principal component analysis with spatial sign vectors (2012) (29)
On Certain Bivariate Sign Tests and Medians (1992) (28)
On the multivariate spatial median for clustered data (2007) (28)
Optimal signed-rank tests based on hyperplanes (2005) (28)
Computation of the multivariate Oja median (2003) (27)
Positive experiences and the relationship between stress and asthma in children (2002) (27)
On the Efficiency of Affine Invariant Multivariate Rank Tests (1998) (27)
Independent component analysis for tensor-valued data (2016) (27)
Blind Source Separation for Spatial Compositional Data (2015) (26)
Tests and estimates of shape based on spatial signs and ranks (2009) (26)
Multivariate L 1 Methods: The Package MNM (2011) (26)
Inference on the marginal distribution of clustered data with informative cluster size (2014) (26)
Robust independent component analysis based on two scatter matrices (2016) (26)
Smoking or Quitting during Pregnancy (1995) (26)
Perinatal risk for infants of unmarried mothers over a period of 20 years. (1990) (26)
Multivariate models and the first four moments (2011) (25)
Incidence of hospitalised schizophrenia in Finland since 1980: decreasing and increasing again (2011) (24)
Projection Pursuit for non-Gaussian Independent Components (2016) (24)
Physiological fluctuations in nasal resistance may interfere with nasal monitoring in the nasal provocation test. (1997) (24)
The squared symmetric FastICA estimator (2015) (23)
On Mardia's tests of multinormality (2004) (23)
Affine equivariant multivariate rank methods (2003) (23)
The Oja Bivariate Median (1992) (23)
The impact of first year adherence to antiretroviral therapy on long‐term clinical and immunological outcomes in the DART trial in Uganda and Zimbabwe (2012) (22)
Signed-rank tests for location in the symmetric independent component model (2009) (22)
How should relative risk estimates for acute otitis media in children aged less than 2 years be perceived? (1996) (22)
A weighted spatial median for clustered data (2006) (22)
Model-based estimation of the excess fraction (attributable fraction): day care and middle ear infection. (1996) (21)
Dynamic logistic regression model and population attributable fraction to investigate the association between adherence, missed visits and mortality: a study of HIV-infected adults surviving the first year of ART (2013) (21)
Invariant co-ordinate selection (with discussion) (2009) (21)
INFLUENCE FUNCTION AND ASYMPTOTIC EFFICIENCY OF THE AFFINE EQUIVARIANT RANK COVARIANCE MATRIX (2004) (21)
Estimates of Regression Coefficients Based on Lift Rank Covariance Matrix (2003) (19)
Multivariate nonparametric tests in a randomized complete block design (2003) (19)
Asymptotic and bootstrap tests for subspace dimension (2016) (18)
Has the intrauterine weight-gain curve changed in shape? (1991) (16)
Rank Scores Tests of Multivariate Independence (2004) (16)
A scatter matrix estimate based on the zonotope (2003) (16)
Supervised invariant coordinate selection (2014) (16)
JADE for Tensor-Valued Observations (2016) (15)
New tests for normality (1983) (15)
Which children are being operated on for recurrent acute otitis media? (1994) (15)
On the Influence Functions of Certain Bivariate Medians (1995) (15)
Generalized Mann–Whitney Type Tests for Microarray Experiments (2014) (14)
Applied Nonparametric Statistical Methods, Fourth Edition by Peter Sprent, Nigel C. Smeeton (2008) (14)
Nonparametric Analysis of Clustered Multivariate Data (2008) (14)
The geometry of the affine invariant multivariate sign and rank methods (1999) (13)
Supervised dimension reduction for multivariate time series (2017) (13)
A weighted multivariate signed-rank test for cluster-correlated data (2007) (12)
Joint Use of Third and Fourth Cumulants in Independent Component Analysis (2015) (12)
MiRNA Profiles in Lymphoblastoid Cell Lines of Finnish Prostate Cancer Families (2015) (12)
Two sample tests for the nonparametric Behrens–Fisher problem with clustered data (2007) (12)
Changes in risk factors for unfavorable pregnancy outcome among singletons over twenty years (1994) (12)
Multivariate linear regression (2010) (11)
Robust autocovariance estimation based on sign and rank correlation coefficients (1999) (11)
Power, sample size and sampling costs for clustered data (2011) (10)
On asymptotics of ICA estimators and their performance indices (2012) (10)
On Independent Component Analysis with Stochastic Volatility Models (2017) (10)
Multivariate Generalized Spatial Signed-Rank Methods Jyrki Möttönen 1 University of Tampere (2004) (10)
NMD and microRNA expression profiling of the HPCX1 locus reveal MAGEC1 as a candidate prostate cancer predisposition gene (2011) (10)
Mann-Whitney Type Tests for Microarray Experiments: The R Package gMWT (2015) (10)
Two location and scale-free goodness-of-fit tests (1981) (9)
Independent component analysis for multivariate functional data (2017) (9)
One-sample location tests for multilevel data (2006) (8)
Independent component analysis based on symmetrised scatter matrices (2007) (8)
Independent Subspace Analysis Using Three Scatter Matrices (2011) (8)
An Affine Equivariant Robust Second-Order BSS Method (2015) (8)
Application of Random Coefficient Regression Model to Myopia Data: A Case Study (1995) (8)
Joint Diagonalization of Several Scatter Matrices for ICA (2012) (8)
k-Step shape estimators based on spatial signs and ranks (2010) (8)
A general class of signed-rank tests for clustered data when the cluster size is potentially informative (2012) (7)
Functional independent component analysis : an extension of fourth-order blind identification (2016) (7)
The effects of family systems medicine training on the practice orientations of general practitioners. (1996) (7)
Tests for informative cluster size using a novel balanced bootstrap scheme (2017) (7)
Scatter matrices with independent block property and ISA (2011) (7)
Clustering based on adherence data (2011) (6)
Nonparametric statistics for subspace based frequency estimation (2000) (6)
Multivariate tests of independence (2010) (6)
Dynamic multivariate modelling: day care and consultation rate for acute otitis media. (1996) (6)
Parametric and nonparametric test for multivariate independence in IC models (2009) (6)
Early developmental milestones in adult schizophrenia. A 31 year follow-up of the North Finland 1966 birth cohort (2000) (6)
Family systems medicine training: Helping to meet psychiatric and psychosomatic problems (1997) (6)
Aetiology and risk indicators of hearing impairments in a one-year birth cohort for 1985-86 in northern Finland. (1998) (6)
Prevalence figures for mild hearing impairments cannot be based on clinical data. (1997) (6)
Robust Nonparametric Inference (2018) (5)
Topographic differences in mean computational sleep depth between healthy controls and obstructive sleep apnoea patients (2006) (5)
SAS/IML Macros for a Multivariate Analysis of Variance Based on Spatial Signs (2006) (5)
Averaging orthogonal projectors (2012) (5)
Combining Linear Dimension Reduction Subspaces (2016) (5)
On some parametric, nonparametric and semiparametric discrimination rules (2003) (5)
Influence Functions and Efficiencies of k-Step Hettmansperger–Randles Estimators for Multivariate Location and Regression (2016) (5)
Notion of Information and Independent Component Analysis (2020) (4)
Nonparametric Statistics and Mixture Models: A Festschrift in Honor of Thomas P.Hettmansperger, (2011) (4)
The asymptotic covariance matrix of the Oja median (2003) (4)
gMWT: Generalized Mann-Whitney Type Tests (2016) (4)
Inference based on the affine invariant multivariate Mann–Whitney–Wilcoxon statistic (2003) (4)
Multivariate Theil estimator with the corresponding test (2006) (3)
Tests of Independence Based on Sign and Rank Covariances (2003) (3)
Affine-invariant rank tests for multivariate independence in independent component models (2016) (3)
Multichannel signal processing using spatial rank covariance matrices (1999) (3)
Blind channel identification using robust subspace estimation (2001) (3)
Descriptive statistics for nonparametric models. The impact of some Erich Lehmann's papers (2012) (3)
Nonparametric Statistics with Applications to Science and Engineering by Paul H. Kvam, Brani Vidakovic (2008) (3)
Rank plots in the affine invariant case (1997) (3)
Sliced Inverse Regression for Spatial Data (2020) (3)
Ordering of Distributions, Partial (2004) (2)
separation of uncorrelated stationary time series (2013) (2)
Wiley Series in Probability and Statistics (2016) (2)
[Stress increases the risk of asthmatic attacks in children]. (2000) (2)
Tools for Exploring Multivariate Data: The (2008) (2)
Mixed-Effects Regression Splines to Model Myopia Data (2015) (2)
Robust Nonparametric Statistical Methods, Second Edition by Thomas P. Hettmansperger, Joseph W. McKean (2011) (2)
Design and cost optimization for hierarchical data (2014) (2)
On the geometry of multivariate L1 objective functions (2004) (2)
On linear dimension reduction based on diagonalization of scatter matrices for bioinformatics downstream analyses (2020) (2)
Affine equivariance in multichannel OS-filtering (1998) (1)
Robust Estimation of Correlation Coefficients (2016) (1)
Introduction to Clustering Large and High-Dimensional Data by Jacob Kogan (2007) (1)
Tools for Linear Dimension Reduction (2015) (1)
Several-sample location problem (2010) (1)
M-estimation with incomplete and dependent multivariate data (2020) (1)
Multivariate signs and ranks (2010) (1)
Asymptotic Theory of Statistics and Probability by Anirban DasGupta (2009) (1)
DISCUSSION OF "BREAKDOWN AND GROUPS" BY P. L. DAVIES AND U. GATHER (2005) (1)
Equivariant Sign Covariance Matrix: Asymptotic Behavior and Eciencies (2001) (1)
Classical Measures of Multivariate Correlation (2016) (1)
Weighted rank tests and Hodges–Lehmann estimates for the multivariate two-sample location problem with clustered data (2012) (1)
Classical Measures of Correlation (2016) (1)
Abstract 4093: miR-193b is an epigenetically regulated putative tumor suppressor in prostate cancer (2010) (1)
Inference on the marginal distribution of clustered data with informative cluster size (2013) (1)
Multivariate location and scatter models (2010) (1)
Partial Ordering of Distributions (2006) (1)
One-sample problem: Hotelling’s T 2-test (2010) (1)
Variable screening based on Gaussian Centered L-moments (2019) (0)
A spatial rank test and corresponding estimators for several samples (2008) (0)
Applications to Exploratory Data Analysis: Detection of Outliers (2016) (0)
Location and scatter functionals and sample statistics (2010) (0)
Parametric and non ‐ Parametric Test for Multivariate Independence in (2009) (0)
Combining Linear Di-mension Reduction Subspaces (2016) (0)
Applications to Signal Processing: Robust Detection (2016) (0)
MetrOP-Educational outcomes and health of children in the differentiating Helsinki Metropolitan Area 2010-13 (2010) (0)
upper: Population quantities, visualisation of how the 277 individuals in this study are distributed among the three health-status groups. (2015) (0)
Robust nonparametric statistical methods. Thomas P. Hettmansperger and Joseph McKean, Arnold/Wiley, London/New York, 1998. No. of pages: xi+467. Price £45. ISBN 0‐340‐54937‐8 (Arnold) and 0‐471‐19479‐4 (Wiley) (1999) (0)
Invariant coordinate selection for multivariate data analysis-the package ICS (2008) (0)
Discussion on "Asymptotic Theory of Outlier Detection Algorithms for Linear Time Series Regression Problems" by Søren Johansen and Bent Nielsen (2016) (0)
Positive experiences and the relationship in children (2002) (0)
SPAWC 12th IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC'11), San Fransisco, CA, June 26-29, 2011 (2011) (0)
168 COMPUTER-BASED PERINATAL RISK PREDICTION IN A GEOGRAPHICALLY DEFINED PARTURIENT POPULATION. AN INTERVENTION STUDY (1990) (0)
Contents of The American Journal of Psychiatry (1997) (0)
One-sample problem: Spatial signed-rank test and Hodges-Lehmann estimate (2010) (0)
Applications to Time Series Analysis: Robust Spectrum Estimation (2016) (0)
Each line represents an individual, having a certain expression value for miRNA X. (2015) (0)
for Several Samples (2011) (0)
Robust Estimation of Scale (2016) (0)
Analysis of cluster-correlated data (2010) (0)
Tests and Corresponding Estimates: a Review* (1999) (0)
Robust Estimation of Location (2016) (0)
Multivariate variance components tests for multilevel data (2018) (0)
One-sample problem: Comparisons of tests and estimates (2010) (0)
Robust ICA based on two scatter matrices (2007) (0)
SNPs associated with miRNA expression levels that were also shown to be directly associated with PrCa using a Fisher-test with a significance level of 0.05. (2015) (0)
Robust Estimation of Scatter and Correlation Matrices (2016) (0)
One-sample problem: Inference for shape (2010) (0)
Multivariate variance components tests for multilevel data: The mvctm package (2014) (0)
Personality and behaviour moderating the stress-asthma relationship in children (2002) (0)
Location of the directional test results for the two probabilistic indicies P^H,M,A and P^A,M,H denoted by H < M < A respective A < M < H. (2015) (0)
Positive life events and the stress asthma relationship in children (2002) (0)
Overall classification results of the Random Forest classifier using the severeness measure S i , r . (2015) (0)
One-sample problem: Spatial sign test and spatial median (2010) (0)
8th International Conference on Computer Data Analysis and Modeling (CDAM'07), Minsk, Belarus, Sept. 11-15, 2007 (2007) (0)
The 12th International Conference on Latent Variable Analysis and Signal Separation LVA/ICA 2015, August 25 - 28, 2015 in Liberec, Czech Republic. (2015) (0)
Blind Source Separation Methods Based on Joint Diagonalization and Some BSS Performance Criteria [R package JADE version 2.0-3] (2020) (0)
AUCs of different ROCs. (2015) (0)
EUSIPCO 19th European Signal Processing Conference (EUSIPCO'11), Barcelona, Spain, Aug 29 - Sep 2, 2011 (2011) (0)
Nonparametric Measures of Multivariate Correlation (2016) (0)
Notion of Information and Independent Component Analysis (2020) (0)
INFERENCE ON THE QUANTILE REGRESSION PROCESS ROGER KOENKER AND ZHIJIE XIAO UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN (0)

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What Schools Are Affiliated With Hannu Oja?

Hannu Oja is affiliated with the following schools:

Hannu Oja's Academic­Influence.com Rankings