Publication and Coauthorship Networks of Hannu Oja

Abstract

In this paper we review Hannu Oja’s publications and form coauthor networks based on them. Applying community detection methods to the network formed by all of Hannu’s publications shows that his coauthors can be classified into 13 clusters, where two large clusters refer to his methodological research. The network concerning this methodological work is then extended to cover all statistical publications written by Hannu’s coauthors. The analysis of the extended network shows that Hannu’s coauthors do not form a closed community, but Hannu is involved in many different fields of statistics.

A.1 Publications of Hannu Oja

• [1] Oja, H.: On location, scale, skewness and kurtosis of univariate distributions. Scand. J. Stat. 8, 154–168 (1981)

• [2] Oja, H.: Two location and scale-free goodness-of-fit tests. Biometrika 68, 637–640 (1981)

• [3] Oja, H.: Descriptive statistics for multivariate distributions. Stat. Probab. Lett. 1, 327–332 (1983)

• [4] Oja, H.: New tests for normality. Biometrika 70, 297–299 (1983)

• [5] Oja, H.: Partial ordering of distributions. In: Kotz, S., Johnson, N.L. (eds.) Encyclopedia of Statistical Science, pp. 490–494. Wiley, New York (1985)

• [6] Oja, H., Niinimaa, A.: Asymptotical properties of the generalized median in the case of multivariate normality. J. R. Stat. Soc. Ser. B 47, 372–377 (1985)

• [7] Oja, H.: On permutation tests in multiple regression and analysis of covariance problems. Aust. J. Stat. 29, 81–100 (1987)

• [8] Oja, H., Nyblom, J.: On bivariate sign tests. J. Am. Stat. Assoc. 84, 249–259 (1989)

• [9] Niinimaa, A., Oja, H., Tableman, M.: The finite-sample breakdown point of the Oja bivariate median and of the corresponding half-samples version. Stat. Probab. Lett. 10, 325–328 (1990)

• [10] Rantakallio, P., Hartikainen-Sorri, A.-L., Sipilä, P., Oja, H., ElSaid, U., Koiranen, M.: Computer-based perinatal risk prediction in a geographically defined parturient population - an intervention study. Pediatr. Res. 28, 305 (1990)

• [11] Rantakallio, P., Oja, H.: Perinatal risk for infants of unmarried mothers during 20 years. Early Hum. Dev. 22, 157–169 (1990)

• [12] Oja, H., Koiranen, M., Rantakallio, P.: Fitting mixture models to birth weight data: a case study. Biometrics 47, 883–897 (1991)

• [13] Rantakallio, P., Oja, H., Koiranen, M.: Has intrauterine weight gain curve changed in shape? Paediatr. Perinat. Epidemiol. 5, 201–220 (1991)

• [14] Brown, B.M., Hettmansperger, T.P., Nyblom, J., Oja, H.: On certain bivariate sign tests and medians. J. Am. Stat. Assoc. 87, 127–135 (1992)

• [15] Hettmansperger, T.P., Nyblom, J., Oja, H.: On multivariate notions of sign and rank. In: Dodge, Y. (ed.) L ₁-Statistical Analysis and Related Methods, pp. 267–278. Elsevier/North Holland, Amsterdam (1992)

• [16] Niinimaa, A., Oja, H., Nyblom, J.: Algorithm AS 277: The Oja bivariate median. Appl. Stat. 41, 611–617 (1992)

• [17] Sipilä, P., Hartikainen-Sorri, A.-L., Oja, H., von Wendt, L.: Perinatal outcome of pregnancies complicated by vaginal bleeding. Br. J. Obstet. Gynaecol. 99, 959–963 (1992)

• [18] Alho, O.P., Kilkku, O., Oja, H., Koivu, M., Sorri, M.: Control of the temporal aspect when considering risk factors for acute otitis media. Arch. Otolaryngol. Head Neck Surg. 119, 444–449 (1993)

• [19] Isohanni, M., Oja, H., Rantakallio, P., Moilanen, I., Koiranen, M.: The relation of the teenage smoking and alcohol use, with special reference to the deficient family background. Scand. J. Soc. Med. 21, 24–30 (1993)

• [20] Alho, O.P., Koivu, M., Sorri, M., Oja, H., Kilkku,O.: Which children are being operated on for recurrent acute otitis media? Arch. Otolaryngol. Head Neck Surg. 120, 807–811 (1994)

• [21] Hettmansperger, T.P., Nyblom, J., Oja, H.: Affine invariant multivariate one-sample sign test. J. R. Stat. Soc. Ser. B 56, 221–234 (1994)

• [22] Hettmansperger, T.P., Oja, H.: Affine invariant multivariate multisample sign tests. J. R. Stat. Soc. Ser. B 56, 235–249 (1994)

• [23] Isohanni, M., Oja, H., Moilanen, I., Koiranen, M.: Teenage alcohol drinking and nonstandard family background. Soc. Sci. Med. 38, 1565–1574 (1994)

• [24] Sipilä, P., Hartikainen, A.-L., von Wendt, L., Oja, H.: Changes in risk factors for unfavourable pregnancy outcome among singletons during 20 years. Acta Obstet. Gynecol. Scand. 73, 612–618 (1994)

• [25] Alho, O., Jokinen, K., Pirilä, T., Ilo, A., Oja, H.: Acute epiglottitis and infant conjugate haemophilus influenzae type b vaccination in northern Finland. Arch. Otolaryngol. Head Neck Surg. 121, 898–902 (1995)

• [26] Alho, O.P., Oja, H., Koivu, M., Sorri, M.: Chronic otitis media with effusion in infancy - how frequent is it and how does it develop? Arch. Otolaryngol. Head Neck Surg. 121, 432–436 (1995)

• [27] Alho, O.P., Oja, H., Koivu, M., Sorri, M.: Risk factors for chronic otitis media with effusion in infancy. each acute otitis media episode induces a high but transient risk. Arch. Otolaryngol. Head Neck Surg. 121, 839–843 (1995)

• [28] Isohanni, K., Oja, H., Moilanen, I., Koiranen, M., Rantakallio, P.: Smoking or quitting during pregnancy: associations with background and future social factors. Scand. J. Soc. Med. 23, 32–38 (1995)

• [29] Möttönen, J., Oja, H.: Multivariate spatial sign and rank methods. J. Nonparametr. Stat. 5, 201–213 (1995)

• [30] Möttönen, J., Oja, H., Krause, U., Rantakallio, P.: Application of random coefficient regression model to myopia data: a case study. Biom. J. 37, 657–672 (1995)

• [31] Niinimaa, A., Oja, H.: On the influence functions of certain bivariate medians. J. R. Stat. Soc. Ser. B 57, 565–574 (1995)

• [32] Alho, O.P., Läärä, E., Oja, H.: How should relative risk estimates for acute otitis media in children aged less than 2 years be perceived? J. Clin. Epidemiol. 49, 9–14 (1996)

• [33] Alho, O.P., Läärä, E., Oja, H.: Public health impact of various risk factors for acute otitis media in northern Finland. Am. J. Epidemiol. 143, 1149–1156 (1996)

• [34] Alho, O.P., Läärä, E., Oja, H.: What is the natural history of recurrent acute otitis media in infancy? J. Fam. Pract. 43, 258–264 (1996)

• [35] Kiuttu, J., Larivaara, P., Väisänen, E., Keinänen-Kiukaanniemi, S., Oja, H.: The effects of family systems medicine training on the practice orientations of general practitioners. Fam. Syst. Health 14, 453–462 (1996)

• [36] Luukkonen, S., Koivunen, V., Oja, H.: Multivariate median filter for correlated noise. In: Proceedings of the 1996 IEEE Nordic Signal Processing Symposium, pp. 411–414 (1996)

• [37] Oja, H., Alho, O.P., Läärä, E.: Model-based estimation of the excess fraction (attributable fraction): day care and middle ear infection. Stat. Med. 15, 1519–1534 (1996)

• [38] Sorri, M., Alho, O.P., Oja, H.: Dynamic multivariate modelling: day care and consultation rate for acute otitis media. Acta Otolaryngol. 116, 299–301 (1996)

• [39] Brown, B.M., Hettmansperger, T.P., Möttönen, J., Oja, H.: Rank plots in the affine invariant case. In: Dodge, Y. (ed.) $L_{1}$-Statistical Procedures and Related Topics: Papers from the 3rd International Conference on $L_{1}$-Norm and Related Methods held in Neuchâtel, 11–15 August 1997, pp. 351–362 (1997)

• [40] Hettmansperger, T.P., Möttönen, J., Oja, H.: Affine invariant multivariate one-sample signed-rank tests. J. Am. Stat. Assoc. 92, 1591–1600 (1997)

• [41] Kiultu, J., Väisänen, E., Larivaara, P., Keinänen-Kiukaanniemi, S., Oja, H.: Family systems medicine training: helping to meet psychiatric and psychosomatic problems. Nord. J. Psychiatry 51, 259–265 (1997)

• [42] Mäkikyrö, T., Isohanni, M., Moring, J., Oja, H., Hakko, H., Jones, P., Rantakallio, P.: Is a child’s risk of early onset schizophrenia increased in the highest social class? Schizophr. Res. 23, 245–252 (1997)

• [43] Möttönen, J., Oja, H., Tienari, J.: On the efficiency of multivariate spatial sign and rank tests. Ann. Stat. 25, 542–552 (1997)

• [44] Pirilä, T., Talvisara, A., Alho, O.P., Oja, H.: Physiological fluctuations in nasal resistance may interfere with nasal monitoring in the nasal provocation test. Acta Otolaryngol. 117, 596–600 (1997)

• [45] Sorri, M., Mäki-Torkko, E., Järvelin, M.-R., Oja, H.: Prevalence figures for mild hearing impairments cannot be based on clinical data. Acta Otolaryngolog. 117, 179–181 (1997)

• [46] Wahlberg, K.-E., Wynne, L.C., Oja, H., Keskitalo, P., Pykäläinen, L., Lahti, I., Moring, J., Naarala, M., Sorri, A., Seitamaa, M., Läksy, K., Kolassa, J., Tienari, P.: Gene-environment interaction in vulnerability to schizophrenia: Findings from the Finnish adoptive family study of schizophrenia. Am. J. Psychiatry 154,355–362 (1997)

• [47] Chakraborty, B., Chaudhuri, P., Oja, H.: Operating transformation retransformation on spatial median and angle test. Stat. Sin. 8, 767–784 (1998)

• [48] Hettmansperger, T. P., Möttönen, J., Oja, H.: Affine invariant multivariate rank tests for several samples. Stat. Sin. 8, 785–800 (1998)

• [49] Koivunen, V., Luukkonen, S., Oja, H.: Affine equivariance in multichannel OS-filtering. In: Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 5, pp. 2881–2884 (1998)

• [50] Mäki-Torkko, E.M., Järvelin, M.-R., Sorri, M.J., Muhli, A.A., Oja, H.: Aetiology and risk indicators of hearing impairments in a 1-year birth cohort for 1985–86 in northern Finland. Scand. Audiol. 27, 237–247 (1998)

• [51] Möttönen, J., Hettmansperger, T.P., Oja, H., Tienari, J.: On the efficiency of affine invariant multivariate rank tests. J. Multivar. Anal. 66, 118–132 (1998)

• [52] Hettmansperger, T.P., Möttönen, J., Oja, H.: The geometry of the affine invariant multivariate sign and rank methods. J. Nonparametr. Stat. 11, 271–285 (1999)

• [53] Hettmansperger, T.P., Oja, H., Visuri, S.: Discussion of “Multivariate analysis by data depth: descriptive statistics, graphics and inference” by Liu, Parelius and Singh. Ann. Stat. 3, 845–853 (1999)

• [54] Möttönen, J., Koivunen, V., Oja, H.: Robust autocovariance estimation based on sign and rank correlation coefficients.In: Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics, pp. 187–190( 1999)

• [55] Niinimaa, A., Oja, H.: Multivariate median. In: Kotz, S., Read, C.B., Banks, D. (eds.), Encyclopedia of Statistical Sciences, vol. 3, pp. 497–505. Wiley, New York (1999)

• [56] Oja, H.: Affine invariant multivariate sign and rank tests and corresponding estimates: a review. Scand. J. Stat. 26, 319–343 (1999)

• [57] Visuri, S., Koivunen, V., Möttönen, J., Oja, H.: Matrix perturbations in covariance and autocovariance matrix estimators. In: Proceedings of the 1999 Finnish Signal Processing Symposium, pp. 142–146 (1999)

• [58] Visuri, S., Oja, H., Koivunen, V.: Multichannel signal processing using spatial rank covariance matrices. In: Proceedings of the IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing (NSIP’99), pp. 75–79 (1999)

• [59] Sandberg, S., Paton, J.Y., Ahola, S., McCann, D.C., McGuinness, D., Hillary, C.R., Oja, H.: Stressi lisää lasten astmakohtausten riskiä. Duodemic 116, 2305–2306 (2000)

• [60] Sandberg, S., Paton, J.Y., Ahola, S., McCann, D.C., McGuinness, D., Hillary, C.R., Oja, H.: The role of acute and chronic stress in asthma attacks in children. Lancet 356, 982–988 (2000)

• [61] Visuri, S., Koivunen, V., Oja, H.: Sign and rank covariance matrices. J. Stat. Plan. Inference 91, 557–575 (2000)

• [62] Visuri, S., Oja, H., Koivunen, V.: Nonparametric method for subspace based frequency estimation. In: Proceedings of 10th European Signal Processing Conference 2000 (EUSIPCO 2000), pp. 1261–1264 (2000)

• [63] Visuri, S., Oja, H., Koivunen, V.: Nonparametric statistics for DOA estimation in the presence of multipath. In: Proceedings of the First IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2000), pp. 356–360 (2000)

• [64] Visuri, S., Oja, H., Koivunen, V.: Robust subspace DOA estimation for wireless communications. In: The IEEE Annual Vehicular Technology Conference VTC2000, pp. 2551–2555 (2000)

• [65] Wahlberg, K.E., Wynne, L.C., Oja, H., Keskitalo, P., Anais-Tanner, H., Koistinen, P., Tarvainen, T., Hakko, H., Lahti, I., Moring, J., Naarala, M., Sorri, A., Tienari, P. Thought disorder index of Finnish adoptees and communication deviance of their adoptive parents. Psychol. Med. 30, 127–136 (2000)

• [66] Isohanni, M., Jones, P.B., Moilanen, K., Rantakallio, P., Veijola, J., Oja, H., Koiranen, M., Jokelainen, J., Croudace, T., Järvelin, M.: Early developmental milestones in adult schizophrenia and other psychoses. A 31-year follow-up of the northern Finland 1966 birth cohort. Schizophr. Res. 52, 1–19 (2001)

• [67] Sandberg, S., McCann, D.C., Ahola, S., Oja, H., Paton, J.Y., McGuinness, D.: Positive experiences and the relationship between stress and asthma in children. Acta Paediatr. 91, 152–158 (2001)

• [68] Visuri, S., Oja, H., Koivunen, V.,: Blind channel identification using robust subspace estimation. In: Proceedings of the 11th IEEE Signal Processing Workshop on Statistical Signal Processing, pp. 281–284 (2001)

• [69] Visuri, S., Oja, H., Koivunen, V.: Subspace-based direction of arrival estimation using nonparametric statistics. In: IEEE Transactions on Signal Processing, vol. 49, pp. 2060–2073 (2001)

• [70] Croux, C., Ollila, E., Oja, H.: Sign and rank covariance matrices: statistical properties and application to principal component analysis. In: Dodge, Y. (ed.) Statistical Data Analysis Based on the L ₁-Norm and Related Methods, pp. 257–269. Birkhäuser Verlag, Basel (2002)

• [71] Ollila, E., Hettmansperger, T.P., Oja, H.: Estimates of regression coefficients based on sign covariance matrix. J. R. Stat. Soc. Ser. B 64, 447–466 (2002)

• [72] Ronkainen, T., Oja, H., Orponen, P.: Computation of the multivariate Oja median. In: Dutter, R., Filzmoser, P., Gather, U., Rousseeuw, P.J. (eds.), Developments in Robust Statistics, pp. 344–359. Springer, Heidelberg (2002)

• [73] Taskinen, S., Kankainen, A., Oja, H.: Tests of independence based on sign and rank covariances. In: Dutter, R., Filzmoser, P., Gather, U., Rousseeuw, P.J. (eds.), Developments in Robust Statistics, pp. 387–403. Springer, Heidelberg (2002)

• [74] Koshevoy, G.A., Möttönen, J., Oja, H.: A scatter matrix estimate based on the zonotope. Ann. Stat. 31, 1439–1459 (2003)

• [75] Möttönen, J., Hüsler, J., Oja, H.: Multivariate nonparametric tests in a randomized complete block design. J. Multivar. Anal. 85, 106–129 (2003)

• [76] Nadar, M., Hettmansperger, T.P., Oja, H.: The asymptotic covariance matrix of the Oja median. Stat. Probab. Lett. 64, 431–442 (2003)

• [77] Oja, H.: Multivariate M-estimates of location and shape. In: Höglund, R., Jäntti, M., Rosenqvist, G. (eds.), Statistics, Econometrics and Society. Essays in Honor of Leif Nordberg. Statistics Finland (2003)

• [78] Ollila, E., Oja, H., Croux, C.: The affine equivariant sign covariance matrix: asymptotic behavior and efficiencies. J. Multivar. Anal. 87, 328–355 (2003)

• [79] Ollila, E., Oja, H., Koivunen, V.: Estimates of regression coefficients based on lift rank covariance matrix. J. Am. Stat. Assoc. 99(461), 90–98 (2003)

• [80] Taskinen, S., Kankainen, A., Oja, H.: Sign test of independence between two random vectors. Stat. Probab. Lett. 62, 9–21 (2003)

• [81] Taskinen, S., Kankainen, A., Oja, H.: Tests of independence based on sign and rank covariances. In: Dutter, R., Filzmoser, P., Gather, U., Rousseeuw, P.J. (eds.), Developments in Robust Statistics, pp. 387–403. Physica-Verlag, HD (2003)

• [82] Topchii, A., Tyurin, Y., Oja, H.: Inference based on the affine invariant multivariate Mann–Whitney–Wilcoxon statistic. J. Nonparametr. Stat. 15, 403–419 (2003)

• [83] Visuri, S., Ollila, E., Koivunen, v., Möttönen, J., Oja, H.: Affine equivariant multivariate rank methods. J. Stat. Plan. Inference 114, 161–185 (2003)

• [84] Kankainen, A., Taskinen, S., Oja, H.: On Mardia’s tests of multinormality. In: Hubert, M., Pison, G., Stryuf, A., Van Aelst, S. (eds.), Statistics for Industry and Technology, pp. 152–164. Birkhäuser, Basel (2004)

• [85] Koshevoy, G.A., Möttönen, J., Oja, H.: On the geometry of multivariate L ₁ objective functions. Allg. Stat. Arch. 88, 137–154 (2004)

• [86] Möttönen, J., Oja, H., Serfling, R.J.: Multivariate generalized spatial signed-rank methods. J. Stat. Res. 39, 19–42 (2004)

• [87] Oja, H., Randles, R.H.: Multivariate nonparametric tests. Stat. Sci. 19, 598–605 (2004)

• [88] Ollila, E., Croux, C., Oja, H.: Influence function and asymptotic efficiency of the affine equivariant rank covariance matrix. Stat. Sin. 14(1), 297–316 (2004)

• [89] Taskinen, S., Kankainen, A., Oja, H.: Rank scores tests of multivariate independence. In: Hubert, M., Pison, G., Stryuf, A., Van Aelst, S. (eds.), Statistics for Industry and Technology, pp. 329–341. Birkhäuser, Basel (2004)

• [90] Oja, H.: Discussion of “Breakdown and groups” by P. L. Davies and U. Gather. Ann. Stat. 33(3), 1000–1004 (2005)

• [91] Oja, H., Paindaveine, D.: Optimal signed-rank tests based on hyperplanes. J. Stat. Plan. Inference 135, 300–323 (2005)

• [92] Taskinen, S., Oja, H., Randles, R.H.: Multivariate nonparametric tests of independence. J. Am. Stat. Assoc. 100, 916–925 (2005)

• [93] Busarova, D., Tyurin, Y., Möttönen, Y., Oja, H.: Multivariate Theil estimator with the corresponding test. Math. Methods Stat. 15, 1–19 (2006)

• [94] Hallin, M., Oja, H., Paindaveine, D.: Semiparametrically efficient rank-based inference for shape. II. Optimal R-estimation of shape. Ann. Stat. 34, 2757–2789 (2006)

• [95] Hartikainen, A., Oja, H.: On nonparametric discrimination rules. In: Liu, R. (ed.), Data Depth: Robust Multivariate Analysis, Computational Geometry, and Applications. AMS DIMACS Book Series, pp. 61–70 (2006)

• [96] Nevalainen, J., Oja, H.: SAS/IML macros for a multivariate analysis of variance based on spatial signs. J. Stat. Softw. 16, 1–17 (2006)

• [97] Nordhausen, K., Oja, H., Tyler, D.E.: On the efficiency of invariant multivariate sign and rank test. In: Liski, E.P., Isotalo, J., Niemelä, J., Puntanen, S., Styan, G.P.H. (eds.), Festschrift for Tarmo Pukkila on his 60th Birthday, pp. 217–231. University of Tampere, Tampere (2006)

• [98] Oja, H., Sirkiä, S., Eriksson, J.: Scatter matrices and independent component analysis. Aust. J. Stat. 35, 175–189 (2006)

• [99] Saastamoinen, A., Oja, H., Huupponen, E., Värri, A., Hasan, J., Himanen, S.L.: Topographic differences in mean computational sleep depth between healthy controls and obstructive sleep apnoea patients. J. Neurosci. Methods 157(1), 178–184 (2006)

• [100] Taskinen, S., Croux, C., Kankainen, A., Ollila, E., Oja, H.: Influence functions and efficiencies of the canonical correlation and vector estimates based on scatter and shape matrices. J. Multivar. Anal. 97, 359–384 (2006)

• [101] Kankainen, A., Taskinen, S., Oja, H.: Tests of multinormality based on location vectors and scatter matrices. Stat. Methods Appl. 16, 357–379 (2007)

• [102] Larocque, D., Nevalainen, J., Oja, H.: A weighted multivariate sign test for cluster correlated data. Biometrika 94, 267–283 (2007)

• [103] Nevalainen, J., Larocque, D., Oja, H.: On the multivariate spatial median for clustered data. Can. J. Stat. 35, 215–283 (2007)

• [104] Nevalainen, J., Larocque, D., Oja, H.: A weighted spatial median for clustered data. Stat. Methods Appl. 15, 355–379 (2007)

• [105] Nordhausen, K., Oja, H., Ollila, E.: Robust ICA based on two scatter matrices. In: Aivazian, S., Filzmoser, P., Kharin, Y. (eds.) Proceedings of the 8th International Conference on Computer Data Analysis and Modeling, pp. 84–91. Minsk Publishing Center BSU, Minsk (2007)

• [106] Oja, H., Critchley, F.: Discussion of the paper “A survey on robust statistics” by S. Morgenthaler. Stat. Methods Appl. 15, 271–293 (2007)

• [107] Sirkiä, S., Taskinen, S., Oja, H.: Symmetrised M-estimators of scatter. J. Multivar. Anal. 98, 1611–1629 (2007)

• [108] Taskinen, S., Sirkiä, S., Oja, H.: Independent component analysis based on symmetrised scatter estimators. Comput. Stat. Data Anal. 51, 5103–5111 (2007)

• [109] Larocque, D., Nevalainen, J., Oja, H.: One-sample location tests for multilevel data. J. Stat. Plan. Inference 138, 2469–2482 (2008)

• [110] Lindroos, B., Mäenpää, K., Ylikomi, T., Oja, H., Suuronen, R., Miettinen, S.: Characterisation of human dental stem cells and buccal mucosa fibroblasts. Biochem. Biophys. Res. Commun. 368(2), 329–335 (2008)

• [111] Nevalainen, J., Möttönen, J., Oja, H.: A spatial rank test and corresponding estimators for several samples. Stat. Probab. Lett. 78, 661–668 (2008)

• [112] Nordhausen, K., Oja, H., Ollila, E.: Robust independent component analysis based on two scatter matrices. Aust. J. Stat. 37, 91–100 (2008)

• [113] Nordhausen, K., Oja, H., Tyler, D.E.: Tools for exploring multivariate data: The package ICS. J. Stat. Softw. 28(6), 1–31 (2008)

• [114] Ollila, E., Oja, H., Koivunen, V.: Complex-valued ICA based on a pair of generalized covariance matrices. Comput. Stat. Data Anal. 52, 3789–3805 (2008)

• [115] Uusitalo, L., Nevalainen, J., Niinistö, S., Alfthan, G., Sundvall, J., Korhonen, T., Kenward, M.G., Oja, H., Veijola, R., Simell, O., Ilonen, J., Knip, M., Virtanen, S.M.: Serum alpha- and gamma-tocopherol concentrations and risk of advanced beta cell autoimmunity in children with HLA-conferred susceptibility to type 1 diabetes mellitus. Diabetologia 51, 773–780 (2008)

• [116] Chaudhuri, P., Ghosh, A.K., Oja, H.: Classification based on hybridization of parametric and nonparametric classifiers. IEEE Trans. Pattern Anal. Mach. Intell. 31(7), 1153–1164 (2009)

• [117] Haataja, R., Larocque, D., Nevalainen, J., Oja, H.: A weighted multivariate signed-rank test for cluster-correlated data. J. Multivar. Anal. 100, 1107–1119 (2009)

• [118] Nordhausen, K., Oja, H., Paindaveine, D.: Signed-rank tests for location in the symmetric independent component model. J. Multivar. Anal. 100, 821–834 (2009)

• [119] Rantanen, H., Koivisto, A.M., Salokangas, R.K., Helminen, M., Oja, H., Pirkola, S., Wahlbeck, K., Joukamaa, M.: Five-year mortality of Finnish schizophrenia patients in the era of deinstitutionalization. Soc. Psychiatry Psychiatr. Epidemiol. 44, 135–142 (2009)

• [120] Sirkiä, S., Taskinen, S., Oja, H., Tyler, D.E.: Tests and estimates for shape based on spatial signs and ranks. J. Nonparametr. Stat. 21, 155–176 (2009)

• [121] Tahvanainen, A., Leskinen, M., Koskela, J., Ilveskoski, E., Nordhausen, K., Oja, H., Kähönen, M., Kööbi, T., Mustonen, J., Pörsti, I.: Ageing and cardiovascular responses to head-up tilt in healthy subjects. Atherosclerosis 2007(2), 445–451 (2009)

• [122] Tyler, D.E., Critchley, F., Dümbgen, L., Oja, H.: Invariant co-ordinate selection. J. R. Stat. Soc. Ser. B 71, 549–592 (2009)

• [123] Ilmonen, P., Nevalainen, J., Oja, H.: Characteristics of multivariate distributions and the invariant coordinate system. Stat. Probab. Lett. 80, 1844–1853 (2010)

• [124] Ilmonen, P., Nordhausen, K., Oja, H., Ollila, E.: A new performance index for ICA: Properties, computation and asymptotic analysis. In: Vigneron, V., Zarzoso, V., Moreau, E., Gribonval, R., Vincent, E. (eds.) Latent Variable Analysis and Signal Separation - 9th International Conference, LVA/ICA 2010, St. Malo, France, 27–30 September 2010. Proceedings of Lecture Notes in Computer Science, vol. 6365, pp. 229–236. Springer (2010)

• [125] Laaksonen, M.A., Knekt, P., Härkänen, T., Virtala, E., Oja, H.: Estimation of the population attributable fraction for mortality in a cohort study using a piecewise constant hazards model. Am. J. Epidemiol. 171, 837–847 (2010)

• [126] Laaksonen, M.A., Härkänen, T., Knekt, P., Virtala, E., Oja, H.: Estimation of population attributable fraction (PAF) for disease occurrence in a cohort study design. Stat. Med. 29(7–8), 860–874 (2010)

• [127] Larocque, D., Haataja, R., Nevalainen, J., Oja, H.: Two sample tests for the nonparametric Behrens-Fisher problem with clustered data. J. Nonparametric Stat. 22, 755–771 (2010)

• [128] Möttönen, J., Nordhausen, K., Oja, H.: Asymptotic theory of the spatial median. In: Antoch, J., Huskova, M., Sen, P.K. (eds.), Nonparametrics and Robustness in Modern Statistical Inference and Time Series Analysis: A Festschrift in honor of Professor Jana Jurečková, pp. 182–193. Institute of Mathematical Statistics, Beachwood, OH (2010)

• [129] Nevalainen, J., Larocque, D., Oja, H., Pörsti, I.: Nonparametric analysis of multivariate clustered data. J. Am. Stat. Assoc. 105, 864–872 (2010)

• [130] Nordhausen, K., Oja, H.: Three scatter matrices and independent subspace analysis. In: Aivazian, S., Filzmoser, P., Kharin, Y. (eds.) Proceedings of the 9th International Conference on Computer Data Analysis and Modeling, pp. 93–100. Minsk Publishing Center BSU, Mink (2010)

• [131] Oja, H.: Multivariate Nonparametric Methods with R: An Approach Based on Spatial Signs and Ranks. Springer (2010)

• [132] Rauhala, H.E., Jalava, S.E., Isotalo, J., Bracken, H., Lehmusvaara, S., Tammela, T.L., Oja, H., Visakorpi, T.: mir-193b is an epigenetically regulated putative tumor suppressor in prostate cancer. Int. J. Cancer 127(6), 1363–1372 (2010)

• [133] Taskinen, S., Sirkiä, S., Oja, H.: k-step shape estimators based on spatial signs and ranks. J. Stat. Plan. Inference 140(11), 3376–3388 (2010)

• [134] Kiwuwa-Muyingo, S., Oja, H., Walker, A.S., Ilmonen, P., Levin, J., Todd, J.: Clustering based on adherence data. Epidemiol. Perspect. Innov. (Methodology) 8(3) (2011)

• [135] Laaksonen, M.A., Virtala, E., Knekt, P., Oja, H., Härkänen, T.: SAS macros for calculation of population attributable fraction in a cohort study design. J. Stat. Softw. 43(7), 1–25 (2011)

• [136] Mattila, H., Schindler, M., Isotalo, J., Ikonen, T., Vihinen, M., Oja, H., Tammela, T.L.J., Wahlfors, T., Schleutker, J.: NMD and microRNA expression profiling of the HPCX1 locus reveal MAGEC1 as a candidate prostate cancer predisposition gene. BMC Cancer 2011 11(327) (2011)

• [137] Nordhausen, K., Ilmonen, P., Mandal, A., Oja, H., Ollila, E.: Deflation-based FastICA reloaded. In: Proceedings of 19th European Signal Processing Conference 2011 (EUSIPCO 2011), pp. 1854–1858 (2011)

• [138] Nordhausen, K., Oja, H.: Discussion on the paper “The asymptotic efficiency of the spatial median for elliptically symmetric distributions” by Andrew Magyar and D.E. Tyler. Sankhya Ser. B 73, 188–191 (2011)

• [139] Nordhausen, K., Oja, H.: Independent subspace analysis using three scatter matrices. Aust. J. Stat. 40(1&2), 93–101 (2011)

• [140] Nordhausen, K., Oja, H.: Multivariate L ₁ methods: the package MNM. J. Stat. Softw. 43, 1–28 (2011)

• [141] Nordhausen, K., Oja, H.: Scatter matrices with independent block property and ISA. In: Proceedings of 19th European Signal Processing Conference 2011 (EUSIPCO 2011), pp. 1738–1742 (2011)

• [142] Nordhausen, K., Oja, H., Ollila, E.: Multivariate models and the first four moments. In: Hunter, D.R., Richards, D.St.P., Rosenberger, J.L. (eds.) Nonparametric Statistics and Mixture Models: A Festschrift in Honor of Thomas P Hettmansperger, pp. 267–287. World Scientific, Singapore (2011)

• [143] Nordhausen, K., Ollila, E., Oja, H.: On the performance indices of ICA and blind source separation. In: Proceedings of IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2011), pp. 486–490 (2011)

• [144] Salokangas, R.K., Helminen, M., Koivisto, A.M., Rantanen, H., Oja, H., Pirkola, S., Wahlbeck, K., Joukamaa, M.: Incidence of hospitalised schizophrenia in Finland since 1980: decreasing and increasing again. Soc. Psychiatry Psychiatr. Epidemiol. 46(4), 343–350 (2011)

• [145] Tokola, K., Larocque, D., Nevalainen, J., Oja, H.: Power, sample size and sampling costs for clustered data. Stat. Probab. Lett. 81(7), 852–860 (2011)

• [146] Datta, S., Nevalainen, J., Oja, H.: A general class of signed-rank tests for clustered data when the cluster size is potentially informative. J. Nonparametr. Stat. 24, 797–808 (2012)

• [147] Ilmonen, P., Oja, H., Serfling, R.: On invariant coordinate system (ICS) functionals. Int. Stat. Rev. 80(1), 93–110 (2012)

• [148] Lemponen, R., Larocque, D., Nevalainen, J., Oja, H.: Weighted rank tests and Hodges-Lehmann estimates for the multivariate two-sample location problem with clustered data. J. Nonparametr. Stat. 24, 977–991 (2012)

• [149] Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: Statistical properties of a blind source separation estimator for stationary time series. Stat. Probab. Lett. 82, 1865–1873 (2012)

• [150] Nordhausen, K., Gutch, H.W., Oja, H., Theis, F.J.: Joint diagonalization of several scatter matrices for ICA. In: Theis, F.J., Cichocki, A., Yeredor, A., Zibulevsky, M. (eds.) Latent Variable Analysis and Signal Separation - 10th International Conference, LVA/ICA 2012, Tel Aviv, Israel, 12–15 March 2012. Proceedings of Lecture Notes in Computer Science, vol. 7191, pp. 172–179. Springer (2012)

• [151] Oja, H.: Descriptive statistics for nonparametric models. The impact of some Erich Lehmann’s papers. In: Rojo, J. (ed.) Selected Works of E. L. Lehmann, pp. 451–457. Springer, New York (2012)

• [152] Oja, H., Nordhausen, K.: Independent component analysis. In: El-Shaarawi, A.-H., Piegorsch, W. (eds.) Encyclopedia of Environmetrics, 2nd edn., pp. 1352–1360. Wiley, Chichester (2012)

• [153] Taskinen, S., Koch, I., Oja, H.: Robustifying principal component analysis with spatial sign vectors. Stat. Probab. Lett. 82, 765–774 (2012)

• [154] Kiwuwa-Muyingo, S., Oja, H., Walker, A.S., Ilmonen, P., Levin, J., Mambule, I., Mugyenyi, P., Todd, J., DART Trial team. 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. BMC Infect. Dis. 13(395) (2013)

• [155] Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: Fast equivariant JADE. In: Proceedings of 38th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), pp. 6153–6157 (2013)

• [156] Oja, H.: Multivariate median. In: Becker, C., Fried, R., Kuhnt, S. (eds.) Robustness and Complex Data Structures, pp. 3–15. Springer, Berlin (2013)

• [157] Fischer, D., Oja, H., Schleutker, J., Sen, P.K., Wahlfors, T.: Generalized Mann-Whitney type tests for microarray experiments. Scand. J. Stat. 41, 672–692 (2014)

• [158] Liski, E., Nordhausen, K., Oja, H.: Supervised invariant coordinate selection. Stat. J. Theor. Appl. Stat. 48, 711–731 (2014)

• [159] Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: Deflation-based separation of uncorrelated stationary time series. J. Multivar. Anal. 123, 214–227 (2014)

• [160] Nevalainen, J., Datta, S., Oja, H.: Inference on the marginal distribution of clustered data with informative cluster size. Stat. Pap. 55, 71–92 (2014)

• [161] Tokola, K., Lundell, A., Nevalainen, J., Oja, H.: Design and cost optimization for hierarchical data. Statistica Neerlandica 68, 130–148 (2014)

1.1 A.2 R Packages of Hannu Oja

• [R1] Nordhausen, K., Oja, H., Tyler, D.E.: ICS: Tools for Exploring Multivariate Data via ICS/ICA (2007) http://www.cran.r-project.org/package=ICS

• [R2] Nordhausen, K., Sirkiä, S., Oja, H., Tyler, D.E.: ICSNP: Tools for Multivariate Nonparametrics (2007) http://www.cran.r-project.org/package=ICSNP

• [R3] Nordhausen, K., Cardoso, J.F., Miettinen, J., Oja, H., Ollila, E., Taskinen, S.: JADE: JADE and other BSS methods as well as some BSS performance criteria (2007) http://www.cran.r-project.org/package=JADE

• [R4] Sirkiä, S., Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: SpatialNP: Multivariate nonparametric methods based on spatial signs and rank (2009) http://www.cran.r-project.org/package=SpartialNP

• [R5] Nordhausen, K., Möttönen, J., Oja, H.: MNM: Multivariate Nonparametric Methods. An Approach Based on Spatial Signs and Rank (2009) http://www.cran.r-project.org/package=MNM

• [R6] Fischer, D., Oja, H.: gMWT: Generalized Mann-Whitney type tests based on probabilistic indices and new diagnostic plots (2012) http://www.cran.r-project.org/package=gMWT

• [R7] Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: fICA: Classic, reloaded and adaptive FastICA algorithms (2013) http://www.cran.r-project.org/package=fICA

• [R8] Miettinen, J., Nordhausen, K., Oja, H., Taskinen, S.: BSSasymp: Asymptotic covariance matrices of some BSS mixing and unmixing matrix estimates (2013) http://www.cran.r-project.org/package=BSSasymp

• [R9] Liski, E., Nordhausen, K., Oja, H., Ruiz-Gazen, A.: LDRTools: Tools for Linear Dimension Reduction (2014) http://www.cran.r-project.org/package=LDRTools

A.3