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Umeå University
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Staff photo Sara Sjöstedt de Luna
Press photo

Sara Sjöstedt de Luna

Professor in Mathematical Statistics

Research qualifications: Docent

Contact

E-mail
sara.sjostedt.de.luna@umu.se
Phone
+46 90 786 54 06

Works as

Affiliation
Professor at Department of Mathematics and Mathematical Statistics
Location
MIT-huset, plan 3, Matematik och matematisk statistik, MIT.F.320 Umeå universitet, 901 87 Umeå

I am professor in Mathematical Statistics. My research focuses on functional data analysis and spatial statistics, with applications in climatology, forestry and human motion analysis.

fdaMocca: an R package for model-based clustering for functional data with covariates
Quantitative methods and data analysis in applied demography - volume 2: data, models, risk and surveys, Cham: Springer 2025 : 95-108
Arnqvist, Per; Sjöstedt de Luna, Sara; Pya Arnqvist, Natalya
fiberLD: Fiber Length Determination. R package version 0.1-8
Pya Arnqvist, Natalya; Sjöstedt de Luna, Sara; Abramowicz, Konrad
Domain selection and family-wise error rate for functional data: a unified framework
Biometrics, John Wiley & Sons 2023, Vol. 79, (2) : 1119-1132
Abramowicz, Konrad; Pini, Alessia; Schelin, Lina; et al.
Nonparametric bagging clustering methods to identify latent structures from a sequence of dependent categorical data
Computational Statistics & Data Analysis, Elsevier 2023, Vol. 177
Abramowicz, Konrad; Sjöstedt de Luna, Sara; Strandberg, Johan
Simultaneous inference for functional data in sports biomechanics: Comparing statistical parametric mapping with interval-wise testing
AStA Advances in Statistical Analysis, Springer 2023, Vol. 107 : 369-392
Pataky, Todd Colin; Abramowicz, Konrad; Liebl, Dominik; et al.
fdaMocca: Model-Based Clustering for Functional Data with Covariates. R package version 0.1-1
Pya Arnqvist, Natalya; Arnqvist, Per; Sjöstedt de Luna, Sara
fiberLD: Fiber Length Determination. R package version 0.1-7
Pya Arnqvist, Natalya; Sjöstedt de Luna, Sara; Abramowicz, Konrad
Dynamic table-visiting behavior of birds at outdoor restaurants and cafés
Ethology, John Wiley & Sons 2021, Vol. 127, (7) : 505-516
Haemig, Paul D.; Sjöstedt de Luna, Sara; Blank, Henrick
fdaMocca: Model-Based Clustering for Functional Data with Covariates. R package version 0.1-0
Pya Arnqvist, Natalya; Arnqvist, Per; Sjöstedt de Luna, Sara
Non-destructive methods for assessing tree fiber length distributions in standing trees
Sjöstedt de Luna, Sara; Abramowicz, Konrad; Pya Arnqvist, Natalya
A comparison of spatiotemporal and functional kriging approaches
Geostatistical functional data analysis, John Wiley & Sons 2021 : 375-402
Strandberg, Johan; Sjöstedt de Luna, Sara; Mateu, Jorge
Multiresolution clustering of dependent functional data with application to climate reconstruction
Stat, John Wiley & Sons 2019, Vol. 8, (1)
Abramowicz, Konrad; Schelin, Lina; Sjöstedt de Luna, Sara; et al.
fiberLD: Fiber Length Determination. R package version 0.1-6
Pya Arnqvist, Natalya; Sjöstedt de Luna, Sara; Abramowicz, Konrad
Prediction of spatial functional random processes: comparing functional and spatio-temporal kriging approaches
Stochastic environmental research and risk assessment (Print), Springer 2019, Vol. 33, (10) : 1699-1719
Strandberg, Johan; Sjöstedt de Luna, Sara; Mateu, Jorge
Nonparametric inference for functional-on-scalar linear models applied to knee kinematic hop data after injury of the anterior cruciate ligament
Scandinavian Journal of Statistics, John Wiley & Sons 2018, Vol. 45, (4) : 1036-1061
Abramowicz, Konrad; Häger, Charlotte; Pini, Alessia; et al.
Clustering misaligned dependent curves applied to varved lake sediment for climate reconstruction
Stochastic environmental research and risk assessment (Print), Springer 2017, Vol. 31, (1) : 71-85
Abramowizc, Konrad; Arnqvist, Per; Secchi, Piercesare; et al.
Fitting diameter distribution models to data from forest inventories with concentric plot design
Forest Systems, INIA 2017, Vol. 26, (2)
Nanos, Nikos; Sjöstedt de Luna, Sara
Functional clustering of varved lake sediment to reconstruct past seasonal climate
Environmental and Ecological Statistics, Springer 2016, Vol. 23, (4) : 513-529
Arnqvist, Per; Bigler, Christian; Renberg, Ingemar; et al.
Method for accurate fiber length determination from increment cores for large-scale population analyses in Norway spruce
Holzforschung, Walter de Gruyter 2016, Vol. 70, (9) : 829-838
Chen, Zhi-Qiang; Abramowicz, Konrad; Raczkowski, Rafal; et al.
Rapid adaptation of predation resistance in bacteria isolated from a seawater microcosm
Aquatic Microbial Ecology, Vol. 78, (2) : 81-92
Mathisen, Peter; Thelaus, J; Sjöstedt de Luna, Sara; et al.
DieHard: Reliable Scheduling to Survive Correlated failures in Cloud Data Centers
2016 16th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid)
Sedaghat, Mina; Wadbro, Eddie; Wilkes, John; et al.
Ecology and phylogeny of birds foraging at outdoor restaurants in Sweden
Biodiversity Data Journal, Pensoft Publishers 2015, Vol. 3
Haemig, Paul D; Sjöstedt de Luna, Sara; Blank, Henrick; et al.
Was it snowing on lake Kassjön in January 4486 BC? Functional data analysis of sediment data
The Third International Workshop on Functional and Operatorial Statistics (IWFOS 2014), Stresa, Italy, June 2014.
Abramowicz, Konrad; Arnqvist, Per; Sjöstedt de Luna, Sara; et al.
How will your workload look like in 6 years?: Analyzing Wikimedia's workload
Proceedings of the 2014 IEEE International Conference on Cloud Engineering (IC2E 2014), IEEE Computer Society 2014 : 349-354
Ali-Eldin, Ahmed; Rezaie, Ali; Mehta, Amardeep; et al.
Measuring cloud workload burstiness
2014 IEEE/ACM 7th International Conference on Utility and Cloud Computing (UCC), IEEE conference proceedings 2014 : 566-572
Ali-Eldin, Ahmed; Seleznjev, Oleg; Sjöstedt-de Luna, Sara; et al.
Association of seasonal climate variability and age-specific mortality in northern Sweden before the onset of industrialization
International Journal of Environmental Research and Public Health, Basel, Switzerland: MDPI AG 2014, Vol. 11, (7) : 6940-6954
Rocklöv, Joacim; Edvinsson, Sören; Arnqvist, Per; et al.
Spatial prediction in the presence of left-censoring
Computational Statistics & Data Analysis, Elsevier 2014, Vol. 74 : 125-141
Schelin, Lina; Sjöstedt-de Luna, Sara
Effect of resource availability on bacterial community responses to increased temperature
Aquatic Microbial Ecology, Inter-Research 2013, Vol. 68, (2) : 131-142
Degerman, Rickard; Dinasquet, Julie; Riemann, Lasse; et al.
Forecasting risk of tick-borne encephalitis (TBE): Using data from wildlife and climate to predict next year’s number of human victims
Scandinavian Journal of Infectious Diseases, Informa Healthcare 2011, Vol. 43 : 366-372
Haemig, Paul; Sjöstedt de Luna, Sara; Grafström, Anton; et al.
Inverse modeling for effective dispersal: Do we need tree size to estimate fecundity?
Ecological Modelling, Elsevier 2010, Vol. 221, (20) : 2415-2424
Nanos, Nikos; Larson, Kajsa; Milleron, Matias; et al.
Climatic influence on the inter-annual variability of late-Holocene minerogenic sediment supply in a boreal forest catchment
Earth Surface Processes and Landforms, John Wiley & Sons 2010, Vol. 35, (4) : 390-398
Petterson, Gunilla; Renberg, Ingemar; Sjöstedt-de Luna, Sara; et al.
Kriging prediction intervals based on semiparametric bootstrap
Mathematical Geosciences, Springer Verlag 2010, Vol. 42, (8) : 985-1000
Schelin, Lina; Sjöstedt-de Luna, Sara
Asymptotic properties of a stochastic EM algorithm for mixtures with censored data
Journal of Statistical Planning and Inference, Elsevier 2010, Vol. 140, (1) : 111-127
Svensson, Ingrid; Sjöstedt-de Luna, Sara
Carbon and nitrogen loss rates during aging of lake sediment: Changes over 27 years studied in varved lake sediment
Limnology and Oceanography, Waco, Tex.: American Society of Limnology and Oceanography 2008, Vol. 53, (3) : 1076-1082
Gälman, Veronika; Rydberg, Johan; Sjöstedt-de Luna, Sara; et al.
Red fox tick-borne encephalitis (TBE) in humans: can predators influence public health?
Scandinavian Journal of Infectious Diseases, Informa Healthcare 2007, Vol. 40, (6-7) : 527-532
Haemig, Paul D.; Lithner, Stefan; Sjöstedt-de Luna, Sara; et al.
Asymptotic properties of a stochastic EM algorithm for mixtures with censored data
Research Report in Mathematical Statistics, 1, 2007
Svensson, Ingrid; de Luna, Sara
A stochastic EM algorithm to estimate wood fibre length distributions from censored data
Bulletin of the International Statistical Institute, 56th session: Lissboa, August, 2007 : -
Svensson, Ingrid; de Luna, Sara
Adjusting for fibre length-biased sampling probability using increment cores from standing trees
Holzforschung, de Gruyter, ReferenceGlobal 2007, Vol. 61, (1) : 101-103
Svensson, Ingrid; Sjöstedt-de Luna, Sara; Mörling, Tommy; et al.
Estimation of wood fibre length distributions from censored data through an EM algorithm
Scandinavian Journal of Statistics, Vol. 33, (3) : 503-522
Svensson, Ingrid; Sjöstedt-de Luna, Sara; Bondesson, Lennart
Some properties of weakly approaching sequences of distributions
Statistics and Probability Letters, Vol. 75 : 119-126
Sjöstedt de Luna, Sara
Subsampling methods to estimate the variance of sample means based on nonstationary spatial data with varying expected values
Journal of the American Statistical Association, Vol. 99, (465) : 82-95
Ekström, Magnus; Sjöstedt-de Luna, Sara
A method to estimate fibre length distribution in conifers based on wood samples from increment cores
Holzforschung, Vol. 57, (3) : 248-254
Mörling, Tommy; Sjöstedt-de Luna, Sara; Svensson, Ingrid; et al.
The bootstrap and kriging prediction intervals
Scandinavian Journal of Statistics, Vol. 30 : 175-192
Sjöstedt de Luna, Sara; Young, Alastair
Resampling non-homogeneous spatial data with smoothly varying mean values
Statistics and Probability Letters, Vol. 53 : 373-379
Sjöstedt, Sara
Weakly approaching sequences of random distributions
Research report / Department of mathematical statistics, 8
Belyaev, Yuri K; Sjöstedt de-Luna, Sara
Resampling m-dependent random variables with applications to forecasting
Scandinavian Journal of Statistics, Vol. 27 : 543-562
Sjöstedt, Sara
Forecasting prices of paper products - focusing on the relation between autocorrelation structure and economic theory
Journal of Forest Economics, Vol. 5 : 23-44
Brännlund, Runar; Löfgren, Karl-Gustav; Sjöstedt, Sara
Resamplings theorems for vector valued heterogeneous random variables
Research Report, Department of Mathematical Statistics, Umeå University, 1997-9
Belyaev, Yuri K; Sjöstedt de Luna, Sara
Resampling from independent heterogeneous random variables with varying mean values
Theory of Stochastic Processes, Vol. 3, (19) : 121-131
Belyaev, Yuri; Sjöstedt, Sara
A computational method for estimating continuum factor models
Computational Statistics (CompStat), Vol. 12 : 481-495
Sjöstedt, Sara; Barrlund, Anders
View publications in DiVA