Helle Sørensen
Professor
Department of Mathematical Sciences
Universitetsparken 5
2100 København Ø
- 2000
Inference for Diffusion Processes and Stochastic Volatility Models
Sørensen, Helle, 2000, Copenhagen: H.C.Ø.-Tryk. 164 p.Research output: Book/Report › Ph.D. thesis › Research
- 2001
Discretely Observed Diffusions: Approximation of the Continuous-time Score Function
Sørensen, Helle, 2001, In: Scandinavian Journal of Statistics. 28, 1, p. 113-121 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2002
Estimation of diffusion parameters for discretely observed diffusion processes
Sørensen, Helle, 2002, In: Bernoulli. 8, 4, p. 491-508 18 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2003
- Published
Simulated likelihood approximations for stochastic volatility models
Sørensen, Helle, 2003, In: Scandinavian Journal of Statistics. 30, 2, p. 257-276 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2004
- Published
Mixtures of toxicants
Cedergreen, Nina, Skovgaard, I. M., Streibig, Jens Carl & Sørensen, Helle, 2004, Symposium i anvendt statistik: 26. årgang, 2004. red. Anders Holm ed. Museum Tusculanum, Vol. 26. p. 210-219 10 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
- Published
Parametric inference for diffusion processes observed at discrete points in time: a survey
Sørensen, Helle, 2004, In: International Statistical Review. 72, 3, p. 337-354 18 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2007
- Published
A note on R: linear models and models with random effects
Martinussen, Torben, Skovgaard, I. M. & Sørensen, Helle, 2007, Frederiksberg: Department of Natural Sciences, University of Copenhagen. 60 p.Research output: Book/Report › Compendium/lecture notes › Education
- Published
An isobole-based statistical model and test for synergism/antagonism in binary mixture toxicity experiments
Sørensen, Helle, Cedergreen, Nina, Skovgaard, I. M. & Streibig, Jens Carl, 2007, In: Environmental and Ecological Statistics. 14, 4, p. 383-397 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Is mixture toxicity measured on a biomarker indicative of what happens on a population level? a study with Lemna minor
Cedergreen, Nina, Abbas Poor, M., Sørensen, Helle & Streibig, Jens Carl, 2007, In: Ecotoxicology and Environmental Safety. 67, 3, p. 323-332 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Lecture notes for applied statistics
Tolver, Anders & Sørensen, Helle, 2007, Frederiksberg: Department of Natural Sciences, University of Copenhagen. 174 p.Research output: Book/Report › Compendium/lecture notes › Education
- Published
Reproducibility of binary-mixture toxicity studies
Cedergreen, Nina, Kudsk, P., Kopp Mathiassen, S., Sørensen, Helle & Streibig, Jens Carl, 2007, In: Environmental Toxicology and Chemistry. 26, 1, p. 149-156 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2008
- Published
A review of independent action compared to concentration addition as reference models for mixtures of compounds with different molecular target sites
Cedergreen, Nina, Christensen, A. M., Kamper, A., Kudsk, P., Matthiassen, S. K., Streibig, Jens Carl & Sørensen, Helle, 2008, In: Environmental Toxicology and Chemistry. 27, 7, p. 1621-1632 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Can the effect of ternary mixtures be predicted from binary mixture toxicity results?
Svendsen, C., Cedergreen, Nina, Kamper, A. & Sørensen, Helle, 2008. 2 p.Research output: Contribution to conference › Conference abstract for conference › Research
- Published
Hormesis in Mixtures - Can it be Predicted?
Belz, R., Cedergreen, Nina & Sørensen, Helle, 2008. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research
- Published
Hormesis in mixtures - can it be predicted?
Belz, R. G., Cedergreen, Nina & Sørensen, Helle, 2008, In: Science of the Total Environment. 404, 1, p. 77-87 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Independent action compared to concentration addition as reference models for mixtures of compounds with different molecular target sites
Cedergreen, Nina, Christensen, A. M., Kamper, A., Kudsk, P., Streibig, Jens Carl & Sørensen, Helle, 2008, SETAC Europe 18th Annual Meeting: Extended abstracts. Society of Environmental Toxicology and Chemistry, p. 243-244 2 p.Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
- Published
Lecture notes for "Statistisk Dataanalyse 1"
Ekstrøm, Claus Thorn & Sørensen, Helle, 2008, Department of Natural Sciences, University of Copenhagen. 204 p.Research output: Book/Report › Compendium/lecture notes › Education
- Published
Small sample distribution of the likelihood ratio test in the random effects model
Sørensen, Helle, 2008, In: Journal of Statistical Planning and Inference. 138, 6, p. 1605-1614 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2009
- Published
A new mathematical model for combining growth and energy intake in animals: the case of the growing pig
Strathe, A. B., Sørensen, Helle & Danfær, A. C., 2009, In: Journal of Theoretical Biology. 261, 2, p. 165-175 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Canopy photosynthesis and time-of-day application of supplemental light
Markvart, J., Rosenqvist, Eva, Sørensen, Helle, Ottosen, C. & Aaslyng, J. P. M., 2009, In: HortScience. 44, 5, p. 1284-1290 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Introduction to statistical data analysis for the life sciences
Ekstrøm, Claus Thorn & Sørensen, Helle, 2009, Department of Basic Sciences and Environment, University of Copenhagen. 334 p.Research output: Book/Report › Compendium/lecture notes › Education
- 2010
A multilevel nonlinear mixed-effects approach to model growth in pigs
Strathe, A. B., Danfær, A. C., Sørensen, Helle & Kebreab, E., 2010, In: Journal of Animal Science. 88, p. 638-649 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
A multivariate nonlinear mixed effects method for analyzing energy partitioning in growing pigs
Strathe, A. B., Danfær, A. C., Chwalibog, André, Sørensen, Helle & Kebreab, E., 2010, In: Journal of Animal Science. 88, 7, p. 2361-2372 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
A random effects model for binary mixture toxicity experiments
Sørensen, Helle, Cedergreen, Nina & Streibig, Jens Carl, 2010, In: Journal of Agricultural, Biological, and Environmental Statistics. 15, 4, p. 562-577 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Agreement between accelerometric symmetry scores and clinical lameness scores during experimentally induced transient distension of the metacarpophalangeal joint in horses
Thomsen, M. H., Persson, A. B., Tolver, Anders, Sørensen, Helle & Andersen, P. H., 2010, In: Equine Veterinary Journal. 42, Suppl. 38, p. 510-515 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
En introduktion til Statistik
Ditlevsen, Susanne & Sørensen, Helle, 2010, Museum Tusculanum. 89 p.Research output: Book/Report › Compendium/lecture notes › Education
- Published
Hierarchical modelling of temperature and habitat size effects on population dynamics of North Atlantic cod
Mantzouni, I., Sørensen, Helle, O'Hara, R. B. & MacKenzie, B. R., 2010, In: ICES Journal of Marine Science. 67, 5, p. 833-855 23 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Symmetry indices based on accelerometric data in trotting horses
Thomsen, M. H., Tolver, Anders, Sørensen, Helle, Lindegaard, Casper & Andersen, P. H., 2010, In: Journal of Biomechanics. 43, p. 2608-2612 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Introduction to statistical data analysis for the life sciences
Ekstrøm, Claus Thorn & Sørensen, Helle, 1 Jan 2010, 1. ed. CRC Press. 409 p.Research output: Book/Report › Book › Research › peer-review
- 2011
- Published
Goodness-of-fit based on downsampling with applications to linear drift diffusions
Forman, Julie Lyng, Markussen, Bo & Sørensen, Helle, 2011, In: Scandinavian Journal of Statistics. 38, 2, p. 288-310 23 p.Research output: Contribution to journal › Journal article › Research › peer-review
Population based growth curve analysis - a comparison between models based on ordinary or stochastic differential equations implemented in a nonlinear mixed effect framework
Strathe, A. B., Danfær, A. C., Nielsen, B., Klim, S. & Sørensen, Helle, 2011, Modelling nutrient digestion and utilization in farm animals. Sauvant, Van Milgen, Faverdin & Friggens (eds.). Wageningen Academic Publishers, p. 22-31 10 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
- 2012
- Published
A first guide to statistical computations in R
Martinussen, Torben, Skovgaard, I. & Sørensen, Helle, 2012, Biofolia/Samfundslitteratur.Research output: Book/Report › Book › Education
- Published
Can the joint effect of ternary mixtures be predicted from binary mixture toxicity results?
Cedergreen, Nina, Sørensen, Helle & Svendsen, C., 2012, In: Science of the Total Environment. 427-428, p. 229-237 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Quantification of symmetry for functional data with application to equine lameness classification
Sørensen, Helle, Tolver, Anders, Thomsen, M. H. & Andersen, P. H., 2012, In: Journal of Applied Statistics. 39, 2, p. 337-360 24 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2013
- Published
An introduction with medical applications to functional data analysis
Sørensen, Helle, Goldsmith, J. & Sangalli, L. M., 2013, In: Statistics in Medicine. 32, 30, p. 5222-5240 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2014
- Published
Analysis of Juggling Data: Registration of Functional Data Subject to Biomechanical Constraints
Tolver, Anders, Sørensen, Helle, Muller, M. & Mousavi, S. N., 2014, In: Electronic Journal of Statistics. 8, 2, p. 1856-1864Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Introduction to Statistical Data Analysis for the Life Sciences
Ekstrøm, Claus Thorn & Sørensen, Helle, 2014, 2 ed. CRC Press. 514 p.Research output: Book/Report › Book › Research › peer-review
- 2015
- Published
Discussion of “Analysis of spatio-temporal mobile phone data: a case study in the metropolitan area of Milan” by P. Secchi, S. Vantini, and V. Vitelli
Sørensen, Helle, Markussen, Bo & Tolver, Anders, 2015, In: Statistical Methods and Applications. 24, 2, p. 321-324Research output: Contribution to journal › Comment/debate › Research › peer-review
- Published
Effect of temperature on reproduction and embryonic development of the cabbage stem flea beetle, Psylliodes chrysocephala L., (Coleoptera: Chrysomelidae)
Mathiasen, Helle, Sørensen, Helle, Bligaard, J. & Esbjerg, Peter, 2015, In: Journal of Applied Entomology. 139, 8, p. 600-608 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
High spatial and fast changes of iron redox state and phosphorus solubility in a seasonally flooded temperate wetland soil
Prem, M., Hansen, Hans Chr. Bruun, Wenzel, W., Heiberg, L., Sørensen, Helle & Borggaard, Ole K., 2015, In: Wetlands. 35, 2, p. 237-246 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2016
- Published
A hybridisation barrier between two evolutionary lineages of Barbarea vulgaris (Brassicaceae) that differ in biotic resistances
Christensen, S., Sørensen, Helle, Jensen, Karen Rysbjerg & Hauser, T. P., 2016, In: Evolutionary Ecology. 30, 5, p. 887-904 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Coexistence facilitates interspecific biofilm formation in complex microbial communities
Madsen, Jonas Stenløkke, Røder, Henriette Lyng, Russel, J., Sørensen, Helle, Burmølle, Mette & Sørensen, Søren Johannes, 2016, In: Environmental Microbiology. 18, 8, p. 2565–2574Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Coupling bacterioplankton populations and environment to community function in coastal temperate waters
Traving, Sachia Jo, Bentzon-Tilia, M., Knudsen-Leerbeck, H., Mantikci, M., Hansen, J. L. S., Stedmon, C. A., Sørensen, Helle, Markager, S. & Riemann, Lasse, 2016, In: Frontiers in Microbiology. 7, 13 p., 1533.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Ecotypic differentiation of two sympatric chemotypes of Barbarea vulgaris (Brassicaceae) with different biotic resistances
Heimes, C., Agerbirk, Niels, Sørensen, Helle, van Mölken, T. & Hauser, T. P., 2016, In: Plant Ecology. 217, 9, p. 1055-1068 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2017
- Published
Diffusion-Type Models with Given Marginal Distribution and Autocorrelation Function / Introduction
Sørensen, Helle, 2017, Inference, Asymptotics, and Applications: Selected Papers of Ib Michael Skovgaard, with Introductions by his Colleagues. Reid, N. & Martinussen, T. (eds.). World Scientific, p. 263-269Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
- Published
Micro vertical changes in soil pH and base cations over time after application of wood ash on forest soil
Hansen, M., Bang-Andreasen, T., Sørensen, Helle & Ingerslev, Morten, 2017, In: Forest Ecology and Management. 406, p. 274-280 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Multinomial functional regression with wavelets and LASSO penalization
Mousavi, S. N. & Sørensen, Helle, 2017, In: Econometrics and Statistics. 150–166Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effect of increased loads of dissolved organic matter on estuarine microbial community composition and function
Traving, Sachia Jo, Rowe, O., Jakobsen, N. M., Sørensen, Helle, Dinasquet, J. V., Stedmon, C. A., Andersson, A. & Riemann, Lasse, 2017, In: Frontiers in Microbiology. 8, 15 p., 351.Research output: Contribution to journal › Journal article › Research › peer-review
- 2018
- Published
Biological control of rice sheath blight using hyphae-associated bacteria: development of an in planta screening assay to predict biological control agent performance under field conditions
Nicolaisen, Mette Haubjerg, Nguyen Duc Cuong, Herschend, J., Jensen, Birgit, Le Cam Loan, Pham Van Du, Sørensen, Jan, Sørensen, Helle & Olsson, S., 2018, In: BioControl. 63, 6, p. 843-853Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Cellular shear stiffness reflects progression of arsenic-induced transformation during G1
Muñoz, A., Eldridge, W. J., Jakobsen, N. M., Sørensen, Helle, Wax, A. & Costa, M., 2018, In: Carcinogenesis. 39, 2, p. 109–117 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 4232568
Most downloads
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1724
downloads
Analysis of Juggling Data: Registration of Functional Data Subject to Biomechanical Constraints
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
262
downloads
The effect of increased loads of dissolved organic matter on estuarine microbial community composition and function
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
210
downloads
Coupling bacterioplankton populations and environment to community function in coastal temperate waters
Research output: Contribution to journal › Journal article › Research › peer-review
Published