## Besøksadresse

Ullevål StadionSognsveien 77B

0855 OSLO

**Name:** Inge Svein Helland

**Born:** June 14, 1947 in Bergen, Norway

**Sex:** Male

**Civil Status:** Married, two children

**Wife:** Anne Kristin

**Daughters:** Annette, born February 6, 1975; Siri, born May 1,1977.

**Home Address:**

Helles vei 11, N-1430 Ås, Norway

**Work Address:**

Department of Mathematics

University of Oslo

P.O.Box 1053 Blindern

N- 0316 Oslo

Norway

**Education:**

Cand. real. in Mathematical Statistics at the University of Bergen 1973.

Dr. Philos. at the University of Oslo 1980. Dissertation: "Minimal Conditions for Weak Convergence to One- Dimensional Diffusion Processes."

**Work Experience:**

University Fellow, University of Bergen, 1974-78.

Lecturer/ Associate Professor, Agricultural University of Norway, 1978-83.

Professor, Agricultural University of Norway, 1983-1996.

Professor, University of Oslo, 1996-present.

**Professional Societies:**

American Statistical Association.

Bernoulli Society for Mathematical Statistics and Probability.

International Statistical Institute.

Biometric Society.

**Additional Experiences:**

Member of the Council, Biometric Society, 1986-89.

Member of the Collegium, Agricultural University of Norway.

Head of Department, Dept. of Math. Sciences, Agricultural
University of Norway 1987-89.

Deputy leader of the Board of Doctoral Studies, Agricultural University of Norway 1993-1995.

Senior Scientist II, Matforsk, 1994-1995.

Associate Editor, Scandinavian Journal of Statistics 1994-2001.

Editor of TG (leaflet for Norwegian statisticians), 1991-1995.

Head of Statistics Division, Department of Mathematics, University of Oslo 1999-2001.

Organizer of Session (Quantum Probability and Statistics) at the European Meeting of Statisticians 2001.

Referee for several statistical journals.

Member of various evaluation committees.

**Supervision: **

Trygve Almøy (Cand. scient.).

Trygve Almøy (Dr. scient.-thesis 1993).

Amrit Kumar Shrestha (Cand. scient. 2000).

Trond Kristian Pedersen (Cand. Scient. 2000).

Espen Norberg (Dr. Scient. 2001)

**Sabbaticals:**

Department of Statistics, University of Berkeley, USA 1976-77.

Department of Statistics, University of Edinburgh, UK 1985- 86.

University College, London, UK 1999.

Department of Statistics, University of Minnesota, Minneapolis, USA 2009

[1] Helland, I.S. (1974) A random exchange model with constant decrements. Report no. 52, Department of Mathematics, University of Bergen.

[2] Helland, I.S. (1975) The conditions for extinction with probability one in a birth, death and migration process. Adv. Appl. Probability 7, 61-65.

[3] Helland, I.S & Nilsen, T.S. (1976) On a general random exchange model. J. Appl. Probability13, 781-790.

[4] Helland, I.S. (1978) Continuity of a class of random time transformations. Stochastic Processes and their applications 7, 79- 99.

[5] Helland, I.S. (1980) On weak convergence to Brownian motion. Z. Wahrscheinlichkeitstheorie verw. Gebiete 52, 251-265.

[6] Helland, I.S. (1981) Minimal conditions for weak convergence to a diffusion process on the line. Ann. Probability 9, 429-452.

[7] Helland, I.S. (1982) Convergence to diffusions with regular boundaries. Stochastic Processes and their Applications 12, 27- 58.

[8] Helland, I.S. (1980) Minimal Conditions for Weak Convergence to One-Dimensional Diffusion processes. Dr. Philos.-dissertation. Consists of the papers |4]-[7] together with a 28 page introduction.

[9] Helland, I.S. (1981) Diffusjonsprosesser. Note (in Norwegian) made in connection with an invited talk at a Norwegian Meeting of Statisticians. Report no. 4, Department of Mathematical Sciences, Agricultural University of Norway.

[10] Helland, I.S. (1982) Central limit theorems for martingales with discrete or continuous time. Scand. J. Statist. 9,79-94.

[11] Helland, I.S. (1982) Estimators derived from rejecting or modifying observations with large studentized residuals. Report no. 16, Department of Mathematical Sciences, Agricultural University of Norway.

[12] Helland, I.S. (1983) Application of central limit theorems for martingales with continuous time. Invited Paper, 44th Session of the International Statistical Institute.

[13] Helland, I.S. (1983) Diffusion models for the dispersal of insects near an attractive center. J. Math. Biology 18, 103-122.

[14] Helland, I.S. (1982) Further aspects of insect dispersal models. Report no. 15, Department of Mathematical Sciences, Agricultural University of Norway.

[15] Helland, I.S., Hoff, J.M. & Anderbrant, O. (1984) Attraction of bark beetles (Coleoptera: Scolytidae) to a pheromone trap. Experiment and Mathematical Models. J. Chemical Ecology 10, 723- 752.

[16] Helland, I.S., Anderbrant,O. & Hoff, J.M. (1989) Modelling bark beetle flight: a review. Holarctic Ecology 12, 427-431.

[17] Helland, I.S. (1987) On the interpretation and use of R**2 in regression analysis. Biometrics 43, 61-69.

[18] Helland, I.S. (1986) On the structure of partial least squares regression. Report no. 21, Department of Mathematical Sciences, Agricultural University of Norway.

[19] Helland, I.S. (1987) Some theoretical considerations around PLS. In: Martens M. [ed.]. Data-approximation by PLS methods. Report no. 800, Norwegian Computing Centre.

[20] Helland, I.S. (1988) On the structure of partial least squares regression. Commun. Statist. -Simula., 17, 581-607.

[21] Helland, I.S. (1990) Partial least squares regression and statistical models. Scand. J. Statist.17, 97-114.

[22] Helland, I.S. (1991) Discussion of Tue Tjur: Analysis of variance and design of experiments. Scand. J. Statist.18, 313- 320.

[23] Helland, I.S. (1992) Maximum likelihood regression on relevant components. J. Roy. Statist. Soc. B 54, 637-647.

[24] Helland, I.S. & Aastveit, A.H. (1992) Databehov og avlingskurver. [in Norwegian] In: Avlingskurver. Økonomiske og naturvitenskapelige perspektiver. Rapport nr 1. Økonomi og økologi. Institutt for økonomi og samfunnsfag, NLH.

[25] Næs, T. & I.S. Helland (1993) Relevant components in regression. Scand. J. Statist. 20, 239-250.

[26] Helland, I.S. (1993) Partial least squares regression and latent variables. Manuscript.

[27] Helland, I.S. (1994) Chisquare tests from clusters of observations. Biometrical Journal 36, 813-823.

[28] Helland, I.S. & T. Almøy (1994) Comparison of prediction methods when only a few components are relevant. JASA 89, 583-591

[29] Helland, I.S. (1997) A population approach to the analysis of variance. Scand. J. Statist. 24, 1-13.

[30] Helland, I.S. (1994) Optimal reduction of dimension for linear prediction. Report No. 3/ 1994. Department of Mathematical Sciences, Agricultural University of Norway.

[31] Helland, I.S. (1995) Simple counterexamples against the conditionality principle. The American Statistician 49, 351-356. Comments and replies 50, 382-386.

[32] Helland, I.S. (1995) Comment to: "Diversity of Evidence, and Birnbaum's Theorem" by Ole E. Barndorff-Nielsen. Scand. J. Statist. 22, 515-519.

[33] Helland, I.S., T. Næs & T. Isaksson (1995) Related versions of multiple scatter correction. Chemometrics and Intelligent Laboratory systems 29, 233-241

[34] Helland, I.S., T. Næs & T. Isaksson (1996) Scatter correction in spectroscopy using spectral and chemical information. Manuscript.

[35] Helland, I.S. & K. Kvaal (1995) Neural networks as calibration methods. NIR news.

[36] Helland, I.S. (1996) Analysis of variance testing in the presence of random effects. Norw. J. Agricultural Sciences 22, 22- 33.

[37] Helland, I.S. (1996) Relevance, prediction and interpretation for linear models with many predictors. Statistical Research Report No. 5/1996. Department of Mathematics, University of Oslo.

[38] Helland, I.S. (1996) On the symmetry approach to quantum mechanics and some relations to ordinary statistics. Statistical Research Report No. 12/1996. Department of Mathematics, University of Oslo.

[39] Helland, I.S. (1996) One-dimensional diffusion processes and their boundaries. Statistical Research Report No. 20/1996. Department of Mathematics, University of Oslo.

[40] Helland, I.S. (1997) More examples on the choice of conditioning. Statistical Research Report No. 10/1997. Department of Mathematics, University of Oslo.

[41] Helland, I.S. (1997) Discussion to: Breiman, L. & J.H. Friedman: Predicting multivariate responses in multiple linear regression. J.R. Statist. Soc. B 59, 47.

[42] Helland, I.S. (1998) Model reduction for prediction in regression models. Scand. J. Statist 27, 1-20.

[43] Helland, I.S. (1998) Statistical inference under a fixed symmetry group. Statistical Research Report No. 7/1998. Department of Mathematics, University of Oslo.

[44] Helland, I.S. (1999) Quantum mechanics from symmetry and statistical modelling. International Journal of Theoretical Physics 38, 1851-1881.

[45] Helland, I.S. (1999) Quantum Theory from Symmetries in a General Statistical Parameter Space. Research Report No. 12/1999. Department of Mathematics, University of Oslo.

[46] Helland, I.S. (1999) Restricted maximum likelihood from symmetry. Statistical Research Report No. 14/1999. Department of Mathematics, University of Oslo.

[47] Helland, I.S. (1999) Approaching regression methods through symmetry arguments. Statistical Research Report No. 15/1999. Department of Mathematics, University of Oslo.

[48] Helland, I.S. (1999) Experiments, symmetries and quantum mechanics. Workshop on Stochastics and Quantum Physics, October 21-26, 1999.

[49] Helland, I.S. (2000) Quantum theory from symmetry and reduction of statistical models. The compact case. Statistical Research Report No. 3/2000. Department of Mathematics, University of Oslo.

[50] Helland, I.S. (2001) Quantum Probability and Statistics. Statistical Review. 23rd European Meeting of Statisticians.

[51] Helland, I.S. (2001) Some theoretical aspects of partial least squares regression. Chemometrics and Intelligent Laboratory Systems 58, 97-107.

[52] Helland, I.S. (2001) Reduction of regression models under symmetry. Contemporary Mathematics 287, 139-153.

[53] Helland, I.S. (2002) Partial Least Squares Regression. Invited article for the Encyclopedia of Statistical Sciences, 2nd edition.

[54] Helland, I.S. (2002) Invited discussion to the article "What is a statistical model?" by Peter McCullagh. Annals of Statistics 30, 1286-1289.

[55] Helland, I.S. (2002) Statistical inference under a fixed symmetry group. Unpublished

[56] Helland, I.S. (2003) Rotational symmetry, model reduction and optimality of prediction from the PLS population model. Invited paper, 2nd International Symposium on PLS and Related Methods. Chemometrics and Intelligent Laboratory Systems 68, 53-60.

[57] Helland, I.S. (2003) Quantum theory as a statistical theory under symmetry and complementarity. Unpublished.

[58] Helland, I.S. (2003) Restricted maximum likelihood from symmetry. Unpublished.

[59] Helland, I.S. (2004) Statistical inference under symmetry. Int. Statist. Rev. 72, 3, 409-422.

[60] Helland, I.S. (2005) Quantum theory as a statistical theory under symmetry. CP750, Foundations of Probability and Physics - 3, edited by A. Khrennikov.

[61] Helland, I.S. (2005) Quantum mechanics may have macroscopic counterparts. New version in preparation.

[62] Helland, I.S. (2006) Towards quantum mechanics from a theory of experiments. Quantum Theory and Symmetries IV, ed. V.K. Dobrev, Heron Press, Sofia.

[63] Helland, I.S. (2006) Extended statistical modeling under symmetry; the link toward quantum mechanics, Ann. Statistics 34, 1, 42-77.

[64] Helland, I.S. (2008) Quantum mechanics from focusing and symmetry. Foundations of Physics 38, 818-842.

[65] Helland, I.S. (2010) Steps Towards a Unified Basis for Scientific Models and Methods. World Scientific, Singapore

[66] Helland, I.S. (2010) Discussion of: Cook, R.D., Li, B. and Chiarimonte, P.: Envelope models for parsimonious and efficient multivariate linear regression. Statistica Sinica 20, 927-1010.

[67] Reitan, T. and Helland, I.S. (2010) Time scale and renormalization of time series. In preparation.

[68] Helland, I.S., Cook, D. and Su, Z. (2010) Envelope models and partial least squares. Submitted.

[69] Helland, I.S, Sæbø, S. and Tjelmeland, H. (2010) Near optimal prediction from relevant components. Submitted.

[70] Helland, I.S. (2011) The Philosophical Foundations of Statistics. In: Lovric, Miodrag (2011), International Encyclopedia of Statistical Science. Heidelberg: Springer Science+Business Media, LLC.