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Publication profile

Kristoffer Herland Hellton

Kristoffer Herland, Hellton
Name: Kristoffer Herland Hellton
Title: Seniorforsker / Senior Research Scientist
Phone: (+47) +47 22 85 25 68 Mob: +47 944 25 706
Email: hellton [at] nr [dot] no
Scientific areas: Statistical analysis, High-dimensional data, Dimension reduction, Model selection, Biostatistics
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Academic article
2022
Hellton, Kristoffer Herland. Penalized angular regression for personalized predictions. Scandinavian Journal of Statistics (ISSN 0303-6898). doi: 10.1111/sjos.12574. 2022.
2021
Huang, Shih-Ting; Düren, Yannick; Hellton, Kristoffer Herland; Lederer, Johannes. Tuning parameter calibration for personalized prediction in medicine. Electronic Journal of Statistics (ISSN 1935-7524). 15(2) pp 5310-5332. doi: 10.1214/21-EJS1884. 2021.
Hellton, Kristoffer Herland; Tveten, Martin; Stakkeland, Morten; Engebretsen, Solveig; Haug, Ola; Aldrin, Magne Tommy. Real-time prediction of propulsion motor overheating using machine learning. Journal of Marine Engineering & Technology (ISSN 2046-4177). doi: 10.1080/20464177.2021.1978745. 2021. Arkiv
2020
Hellton, Kristoffer Herland; Cummings, Jeffrey; Vik-Mo, Audun Osland; Nordrehaug, Jan Erik; Aarsland, Dag; Selbæk, Geir; Melvær, Giil Lasse. The Truth behind the Zeros: A New Approach to Principal Component Analysis of the Neuropsychiatric Inventory. Multivariate Behavioral Research (ISSN 0027-3171). 56(1) pp 70-85. doi: 10.1080/00273171.2020.1736976. 2020. Arkiv
Heinrich, Claudio Constantin; Hellton, Kristoffer Herland; Lenkoski, Alex; Thorarinsdottir, Thordis Linda. Multivariate Postprocessing Methods for High-Dimensional Seasonal Weather Forecasts. Journal of the American Statistical Association (ISSN 0162-1459). doi: 10.1080/01621459.2020.1769634. 2020.
2019
Melvær, Giil Lasse; Solvang, Stein-Erik Hafstad; Giil, Malin Melvaer; Hellton, Kristoffer Herland; Skogseth, Ragnhild Eide; Vik-Mo, Audun Osland; Hortobágyi, Tibor; Aarsland, Dag; Nordrehaug, Jan Erik. Serum Potassium Is Associated with Cognitive Decline in Patients with Lewy Body Dementia. Journal of Alzheimer's Disease (ISSN 1387-2877). 68(1) pp 239-253. doi: 10.3233/JAD-181131. 2019.
2018
Thorarinsdottir, Thordis Linda; Hellton, Kristoffer Herland; Steinbakk, Gunnhildur Högnadóttir; Schlichting, Lena; Engeland, Kolbjørn. Bayesian regional flood frequency analysis for large catchments. Water Resources Research (ISSN 0043-1397). 54(9) pp 6929-6947. doi: 10.1029/2017WR022460. 2018. Fulltekst
Sørensen, Øystein; Hellton, Kristoffer Herland; Frigessi Di Rattalma, Arnoldo; Thoresen, Magne. Covariate Selection in High-Dimensional Generalized Linear Models With Measurement Error. Journal of Computational And Graphical Statistics (JCGS) (ISSN 1061-8600). 27(4) pp 739-749. doi: 10.1080/10618600.2018.1425626. 2018. Arkiv
Melvær, Giil Lasse; Aarsland, Dag; Hellton, Kristoffer Herland; Lund, Anders; Heidecke, Harald; Schulze-Forster, Kai; Riemekasten, Gabriela; Vik-Mo, Audun Osland; Kristoffersen, Einar Klæboe; Vedeler, Christian A.; Nordrehaug, Jan Erik. Antibodies to multiple receptors are associated with neuropsychiatric symptoms and mortality in Alzheimer's disease: A longitudinal study. Journal of Alzheimer's Disease (ISSN 1387-2877). 64(3) pp 761-774. doi: 10.3233/JAD-170882. 2018.
Hellton, Kristoffer Herland; Hjort, Nils Lid. Fridge: Focused fine‐tuning of ridge regression for personalized predictions. Statistics in Medicine (ISSN 0277-6715). 37(8) pp 1290-1303. doi: 10.1002/sim.7576. 2018. Arkiv
2017
Hellton, Kristoffer Herland; Thoresen, Magne. When and Why are Principal Component Scores a Good Tool for Visualizing High-dimensional Data? Scandinavian Journal of Statistics (ISSN 0303-6898). 44 pp 581-597. doi: 10.1111/sjos.12264. 2017. Arkiv
2016
Hellton, Kristoffer Herland; Thoresen, Magne. Integrative clustering of high-dimensional data with joint and individual clusters. Biostatistics (ISSN 1465-4644). 17(3) pp 537-548. doi: 10.1093/biostatistics/kxw005. 2016. Arkiv
Hellton, Kristoffer Herland. When are principal component scores a good tool for visualizing high-dimensional data? Oberwolfach Reports (ISSN 1660-8933). (12) pp 20-22. doi: 10.4171/OWR/2016/12. 2016. Arkiv
2014
Hellton, Kristoffer Herland; Thoresen, Magne. The Impact of Measurement Error on Principal Component Analysis. Scandinavian Journal of Statistics (ISSN 0303-6898). 41(4) pp 1051-1063. doi: 10.1111/sjos.12083. 2014. Arkiv
Academic chapter/article/Conference paper
2017
Hellton, Kristoffer Herland. A focused mean squared error approach for selecting tuning parameters in penalized regression. In: 2017 JSM proceedings : papers presented at the Joint Statistical Meetings. (ISBN 9780983937579). pp 1553-1568. 2017.
2015
Hellton, Kristoffer Herland. Consistency of principal component scores in visualizations of high-dimensional data. In: Proceedings of the 60th World Statistics Congress of the International Statistical Institute, ISI2015. (ISBN 978-90-73592-35-3). pp 3185-3190. doi: 10.1111/sjos.12264. 2015. Fulltekst
Academic lecture
2021
Hellton, Kristoffer Herland. Penalized angular regression for personalized predictions. Statistikkseminar; NMBU, Ås, 10/21/2021.
2020
Hellton, Kristoffer Herland. Penalized angular regression for personalized predictions. Seminar; Domus Medica, Universitetet i Oslo, 2/28/2020.
Hellton, Kristoffer Herland. Penalized angular regression for personalized predictions. Seminar Series in Statistics and Data Science; Universitetet i Oslo, 1/28/2020.
2019
Hellton, Kristoffer Herland. Penalized angular regression for personalized predictions. 12th International Conference of the ERCIM WG on Computational and Methodological Statistics (CMStatistics 2019); London, 12/14/2019 - 12/16/2019.
2018
Hellton, Kristoffer Herland. Combination of information across diverse sources: An overview. FocuStat Research Kitchen on Combination of Data sources; Oslo, 11/12/2018 - 11/14/2018.
Hellton, Kristoffer Herland. Focused fine-tuning of ridge regression with data integration. FocuStat Research Kitchen on Combination of Data sources; Oslo, 11/12/2018 - 11/14/2018.
Hellton, Kristoffer Herland; Thorarinsdottir, Thordis Linda. Bayesian hierarchical modeling of extreme flood events. 9th Smögen Workshop, 8/13/2018 - 8/16/2018.
Hellton, Kristoffer Herland. Fridge: Focused fine-tuning of ridge regression for personalized predictions. 11th International Conference on Computational and Methodological Statistics; Pisa, 12/13/2018 - 12/16/2018.
Hellton, Kristoffer Herland. Fridge: Focused fine-tuning of ridge regression for personalized predictions. 23rd International Conference on Computational Statistics (CompStat2018); Iasi, 8/28/2018 - 8/31/2018.
Thorarinsdottir, Thordis Linda; Hellton, Kristoffer Herland; Steinbakk, Gunnhildur Högnadóttir; Schlichting, Lena; Engeland, Kolbjørn. Statistical estimation of extreme floods. Extremes 2018; Hannover, 3/18/2018.
Thorarinsdottir, Thordis Linda; Lenkoski, Alex; Hellton, Kristoffer Herland; Steinbakk, Gunnhildur Högnadóttir; Dyrrdal, Anita Verpe; Stordal, Frode; Schlichting, Lena; Engeland, Kolbjørn. On developing general and efficient inference algorithms for complicated hierarchical models. 13th German Probability and Statistics Days; Freiburg, 2/28/2018.
Hellton, Kristoffer Herland. High-dimensional asymptotics for principal component regression. FocuStat Conference 2018, 5/22/2018 - 5/25/2018.
Hellton, Kristoffer Herland. Prediksjon av viral suksess: hvordan modellere spredning av et produkt mellom kunder? Make Data Smart Again 2018; Oslo, 6/5/2018.
2017
Hellton, Kristoffer Herland. P-values: what is the problem? PhD day, 2/3/2017.
Hellton, Kristoffer Herland. Significance for a modern world. Big Insight-lunjsseminar, 12/6/2017.
Hellton, Kristoffer Herland; Hjort, Nils Lid. Fridge: focused fine-tuning of ridge regression for personalized prediction. Norsk statistikermøte; Fredrikstad, 6/12/2017.
Hellton, Kristoffer Herland. Focused Fine-tuning of Ridge Regression for Personalized Prediction. Joint Statistical Meeting; Baltimore, 7/30/2017 - 8/5/2017.
2016
Hellton, Kristoffer Herland. Fridge: a focused approach to fine-tuning ridge regression. PhD/Postdoc Workshop, 9/6/2016 - 9/7/2016. Omtale
Hellton, Kristoffer Herland; Zucknick, Manuela. Drug synergy prediction for personalized therapy. Big Insight Day 2016; Fornebu, Telenor, 11/15/2016.
Hellton, Kristoffer Herland. When are principal component scores a good tool for visualizing high-dimensional data? New Developments in Functional and Highly Multivariate Statistical Methodology; Oberwohlfach, 2/21/2016 - 2/27/2016.
Hellton, Kristoffer Herland. Focused fine-tuning of ridge regression. FICology; Oslo, 5/9/2016 - 5/11/2016.
2015
Hellton, Kristoffer Herland. PCA and the asymptotic distribution of high-dimensional sample eigenvectors. Inference with Confidence; Oslo, 5/9/2015 - 5/11/2015. Data
Hellton, Kristoffer Herland. Consistency of principal component scores in visualizations of high-dimensional data. 60th ISI World Statistics Congress; Rio de Janeiro, 7/24/2015 - 7/27/2015.
2014
Hellton, Kristoffer Herland. Integrative Clustering of High-dimensional Data with Joint and Individual Clusters. Statistical Methods for Omics Data Integration and Analysis (SMODIA); Heraklion, 11/20/2014 - 11/22/2014. Data
2013
Hellton, Kristoffer Herland. Issues regarding principal component analysis in the high-dimensional setting. Statistics seminar; Zürich, 9/23/2013.
Hellton, Kristoffer Herland. Consistency in high-dimensional principal component analysis. Statistics seminar, 2/26/2013. Sammendrag
Hellton, Kristoffer Herland. Why principal component scores are a good exploratory tool for high-dimensional data. Joint Statistical Meeting (JSM); Montreal, 8/3/2013 - 8/6/2013. Data
Hellton, Kristoffer Herland. Why PC scores are a good way to explore certain high-dimensional data. Norwegian Statistical Society conference, 6/12/2013 - 6/15/2013.
2012
Hellton, Kristoffer Herland. Projecting errors: How to understand measurement error in principal component analysis. PhD/Postdoc Workshop, 4/26/2012 - 4/27/2012.
Hellton, Kristoffer Herland. The impact of measurement error on principal component analysis. 8th World congress in Probability and Statistics; Istanbul, 7/9/2012 - 7/14/2012. Data
Hellton, Kristoffer Herland. The impact of measurement error on principal component analysis. 33th annual conference of International Society for Clinical Biostatistics, 8/1/2012 - 8/5/2012.
Lecture
2020
Løland, Anders; Hellton, Kristoffer Herland. Alt du kan lære om statistisk modellering og maskinlæring på en dag. Kurs; Oslo, 1/30/2020.
2017
Løland, Anders; Günther, Clara-Cecilie; Hellton, Kristoffer Herland. Valgprognoser: hvorfor de er vanskelige og kanskje nyttige? Temakveld; Oslo, 11/13/2017.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; Oslo, 9/22/2017.
Hellton, Kristoffer Herland. Personalized predictions through focused fine-tuning of ridge regression. Sylvia Richardson H.C. workshop day; University of Oslo, Dept. of Biostatistics, 8/30/2017.
Poster
2016
Hellton, Kristoffer Herland. Integrative clustering of high-dimensional data with joint and individual clusters. 26th Nordic conference of Mathematical Statistics (NordStat); København, 6/27/2016 - 6/30/2016.
2014
Hellton, Kristoffer Herland. Asymptotic distribution of principal component scores for pervasive, high-dimensional eigenvectors. Geilo Winter School 2014: Big Data & Statistics; Geilo, 1/22/2014.
2013
Hellton, Kristoffer Herland. Asymptotic distribution of principal component scores for pervasive, high-dimensional eigenvectors. 34th annual meeting of International Society for Clinical Biostatistics; München, 8/16/2013 - 8/18/2013.
Doctoral dissertation
2015
Hellton, Kristoffer Herland. On high-dimensional principal component analysis in genomics: consistency and robustness. Institute Of Basic Medical Sciences, Faculty of Medicine, University of Oslo. pp 108. 2015. Fulltekst
Masters thesis
2011
Hellton, Kristoffer Herland. Stochastic Models for Smoothing Splines: A Bayesian Approach.. 2011. Data
Report
2018
Thorarinsdottir, Thordis Linda; Engeland, Kolbjørn; Lawrence, Deborah; Pedersen, Øyvind; Tveito, Ole Einar; Hellton, Kristoffer Herland; Dyrrdal, Anita Verpe; Eide, Vidar; Førland, Eirik; Holmqvist, Erik; Kobierska, Florian; Jørgensen, Sigrid; Midttømme, Grethe Holm; Moore, Richard; Nordtun, Kristian Strand; Orthe, Nils Kristian; Randen, Frode; Reitan, Trond; Ruther, Nils; Schlichting, Lena; Skaugen, Thomas; Steinbakk, Gunnhildur Högnadóttir; Voksø, Astrid; Væringstad, Thomas; Wang, Thea; Wilson, Donna; Ødemark, Karianne. Nytt rammeverk for flomestimering i Norge: Sluttrapport fra forskningsprosjektet FlomQ. Energi Norge. (ISBN 978-82-436-1048-4) pp 71. 2018.
2010
Hellton, Kristoffer Herland; Lindvall, Hilda; Mutimbu, Lawrence; Nieminen, P; Proscia, Michele; Micheletti, Alessandra. Integrative Analysis of Omics Data. Dipartimento di Matematica, Universita degli Studi di Milano. pp 22. 2010. Fulltekst
Popular scientific lecture
2019
Løland, Anders; Hellton, Kristoffer Herland. Maskinlæring på 1-2-3. Kurs; Norsk Regnesentral, Sentralen, Oslo, 10/15/2019.
Løland, Anders; Hellton, Kristoffer Herland. Alt du kan lære om statistisk modellering og maskinlæring på en dag. Kurs; Norsk Regnesentral, Oslo, 11/10/2019.
Hellton, Kristoffer Herland; Løland, Anders. Kurs i maskinlæring. Kurs; Utdanningsdirektoratet, Oslo, 3/7/2019.
Løland, Anders; Hellton, Kristoffer Herland. Alt du kan lære om statistisk modellering og maskinlæring på en dag. Kurs; Norsk Regnesentral, Oslo, 1/30/2019.
2018
Rognebakke, Hanne Therese Wist; Hellton, Kristoffer Herland. Introduksjon til R – verktøy for statistisk analyse. Kurs; Norsk Regnesentral, Oslo, 3/1/2018.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; Norsk Regnesentral, Oslo, 2/28/2018.
2017
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; Norsk Regnesentral, Oslo, 11/22/2017.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; DNB, Oslo, 3/24/2017.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; DNB, Oslo, 3/20/2017.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; Norsk Regnesentral, Blindern, Oslo, 3/8/2017.
Løland, Anders; Hellton, Kristoffer Herland. Statistisk metode på 360 minutter – fra det enkle til det avanserte. Kurs; Bergen, 3/14/2017.
2016
Hellton, Kristoffer Herland. Sju søyler med statistisk visdom. Populærmatematiske foredrag; Matematisk fagutvalg ved Universitetet i Oslo, Realfagsbiblioteket, 1/26/2016.
2014
Hellton, Kristoffer Herland. Skattejakten på genene våre – med statistikk som verktøy. Bestill en kreftforsker 2014, 10/16/2014. Data
2012
Hellton, Kristoffer Herland. Skattejakten på genene våre – med statistikk som verktøy. Bestill en kreftforsker 2012, 10/3/2012. Data
Popular scientific article
2017
Hellton, Kristoffer Herland; Røislien, Jo. Verdens første p-verdi. Tidsskrift for Den norske legeforening (ISSN 0029-2001). 137(12) pp 1-3. 6/26/2017.
Interview
2021
Hellton, Kristoffer Herland; Gjuvsland, Elin Ruhlin. Film: Hvordan lager vi valgprognoser? 2021. https://nr.no/ [Internet] 9/1/2021. Data
2017
Hellton, Kristoffer Herland. Faktisk delvis sant: Delstaten Colorado var først ute med legalisering av cannabis. Der har bruken økt i alle aldersgrupper, også blant barn fra 12 til 17 år. 2017. faktisk.no [Internet] 7/14/2017. Fulltekst
Hellton, Kristoffer Herland. Ender med å velge det trygge. 2017. Dagens næringsliv [Avis] 9/19/2017.
Günther, Clara-Cecilie; Løland, Anders; Hellton, Kristoffer Herland. Arbeiderpartiet faller, men vinner. 2017. Finansavisen [Avis] 8/15/2017.
Løland, Anders; Günther, Clara-Cecilie; Hellton, Kristoffer Herland. Prognose, ikke en meningsmåling. 2017. abc nyheter [Internet] 7/15/2017. Fulltekst
Løland, Anders; Günther, Clara-Cecilie; Hellton, Kristoffer Herland. Prognose, ikke en meningsmåling. 2017. Finansavisen [Avis] 7/8/2017.
2015
Hellton, Kristoffer Herland. Denne 27-åringens regnestykker skal gi bedre kreftbehandling. 2015. Budstikka [Avis] 4/11/2015. Fulltekst
Hellton, Kristoffer Herland. Doktorgraden i boks. 2015. Budstikka [Avis] 2/10/2015.
Programme participation
2021
Hellton, Kristoffer Herland. Er det mulig å regne seg frem til hvem som vinner stortingsvalget? 2021. aftenposten.no [Internet] 9/19/2021.
Hellton, Kristoffer Herland. Om valgprognoser i Dagbladets valgnattsending. 2021. db.no [Internet] 9/13/2021.
Hellton, Kristoffer Herland. Om valgprognoser i Dagbladets valgbod. 2021. db.no [Internet] 9/2/2021.
2017
Hellton, Kristoffer Herland. Besøk i Dagbladets valgbod. 2017. db.no [Internet] 9/8/2017. Fulltekst
Programme management
2020
Løland, Anders; Hellton, Kristoffer Herland. Episode 7: Presidentvalg spesial! Hvordan lages valgprognoser? Med gjest Kristoffer Herland Hellton. 2020.
Postal address:
Norsk Regnesentral/
Norwegian Computing Center
P.O. Box 114 Blindern
NO-0314 Oslo
Norway
Visit address:
Norsk Regnesentral
Gaustadalleen 23a
Kristen Nygaards hus
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(+47) 22 85 25 00
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Postal address: Norsk Regnesentral/Norwegian Computing Center, P.O. Box 114 Blindern, NO-0314 Oslo, Norway
Visit address: Norsk Regnesentral, Gaustadalleen 23a, Kristen Nygaards hus, NO-0373 Oslo.
Phone: (+47) 22 85 25 00
AddressHow to get to NR