Kristoffer Herland Hellton

Vitenskapelige publikasjoner

Hellton, Kristoffer Herland ; Lingjærde, Camilla; De Bin, Riccardo (2024). Influence of single observations on the choice of the penalty parameter in ridge regression. Journal of Statistical Computation and Simulation.
https://doi.org/10.1080/00949655.2024.2440542

Parviero, Riccardo; Hellton, Kristoffer Herland ; Canright, Geoffrey; Scheel, Ida (2024). STAR: Spread of innovations on graph structures with the Susceptible-Tattler-Adopter-Removed model. 19 s. Stat. Vol. 13.
https://doi.org/10.1002/sta4.671

Hellton, Kristoffer Herland ; Amdahl, Helga; Thorarinsdottir, Thordis; Alsheikh, Muath K; Aamlid, Trygve S.; Jørgensen, Marit; Dalmannsdottir, Sigridur; Rognli, Odd Arne (2023). Yield predictions of timothy (Phleum pratense L.) in Norway under future climate scenarios. Agricultural and Food Science. Vol. 32.
https://doi.org/10.23986/afsci.127935

Parviero, Riccardo; Hellton, Kristoffer Herland ; Haug, Ola; Engø-Monsen, Kenth; Rognebakke, Hanne Therese Wist; Canright, Geoffrey; Frigessi, Arnoldo; Scheel, Ida (2022). An agent-based model with social interactions for scalable probabilistic prediction of performance of a new product. 12 s. International Journal of Information Management Data Insights. Vol. 2.
https://doi.org/10.1016/j.jjimei.2022.100127

Hellton, Kristoffer Herland (2022). Penalized angular regression for personalized predictions. Scandinavian Journal of Statistics. Vol. 50.
https://doi.org/10.1111/sjos.12574

Huang, Shih-Ting; Düren, Yannick; Hellton, Kristoffer Herland ; Lederer, Johannes (2021). Tuning parameter calibration for personalized prediction in medicine. 22 s. Electronic Journal of Statistics. Vol. 15.
https://doi.org/10.1214/21-EJS1884

Hellton, Kristoffer Herland ; Tveten, Martin; Stakkeland, Morten; Engebretsen, Solveig; Haug, Ola; Aldrin, Magne Tommy (2021). Real-time prediction of propulsion motor overheating using machine learning. 9 s. Journal of Marine Engineering & Technology.
https://doi.org/10.1080/20464177.2021.1978745

Heinrich, Claudio Constantin; Hellton, Kristoffer Herland ; Lenkoski, Alex; Thorarinsdottir, Thordis Linda (2020). Multivariate Postprocessing Methods for High-Dimensional Seasonal Weather Forecasts. 13 s. Journal of the American Statistical Association.
https://doi.org/10.1080/01621459.2020.1769634

Hellton, Kristoffer Herland ; Cummings, Jeffrey; Vik-Mo, Audun Osland; Nordrehaug, Jan Erik; Aarsland, Dag; Selbæk, Geir; Melvær, Giil Lasse (2020). The Truth behind the Zeros: A New Approach to Principal Component Analysis of the Neuropsychiatric Inventory. 17 s. Multivariate Behavioral Research. Vol. 56.
https://doi.org/10.1080/00273171.2020.1736976

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 (2019). Serum Potassium Is Associated with Cognitive Decline in Patients with Lewy Body Dementia. Journal of Alzheimer's Disease. Vol. 68.
https://doi.org/10.3233/JAD-181131

Forskningsrapporter

Hellton, Kristoffer Herland ; Günther, Clara-Cecilie; Løland, Anders (2023). Modell for valgprognoser – med resultater fra 2021-valget. 22 s. Norsk Regnesentral.

Hellton, Kristoffer Herland ; Løland, Anders (2023). Modell for valgprognoser. 22 s. Norsk Regnesentral Oslo.

Hellton, Kristoffer Herland ; Thorarinsdottir, Thordis (2022). Analysis of variety crossings for improved yield in timothy. 17 s. Norsk Regnesentral Oslo.

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 (2018). Nytt rammeverk for flomestimering i Norge: Sluttrapport fra forskningsprosjektet FlomQ. ISBN: 978-82-436-1048-4. 71 s. Energi Norge.

Hellton, Kristoffer Herland ; Thoresen, Magne (2015). On high-dimensional principal component analysis in genomics: consistency and robustness. ISBN: 9788282649513. 108 s. Universitetet i Oslo.

Hellton, Kristoffer Herland ; Lindvall, Hilda; Mutimbu, Lawrence; Nieminen, P; Proscia, Michele; Micheletti, Alessandra (2010). Integrative Analysis of Omics Data. 22 s. Dipartimento di Matematica, Universita degli Studi di Milano.

Formidling

Dalmannsdottir, Sigridur; Jørgensen, Marit; Amdahl, Helga; Hellton, Kristoffer Herland ; Rognli, Odd Arne (2024). How does seed production in southern part of Norway affect the winter hardiness of varieties adapted to Northern Norway?. 30th EGF General Meeting: Why grasslands?. European Grassland Federation.

Aamlid, Trygve S.; Dalmannsdottir, Sigridur; Jørgensen, Marit; Hellton, Kristoffer Herland ; Pashapu, Akhil Reddy; Stürite, Ievina; Kovi, Mallikarjuna Rao; Amdahl, Helga; Fossdal, Carl Gunnar; Rognli, Odd Arne (2024). Estimating phenotypic and genetic changes due to continued seed production outside the area of their adaptation- The case of northern timothy cultivars. EUCARPIA General Congress "Global Challenges for Crop Improvement". IPK Leibniz Institute, Gatersleben .

Rognli, Odd Arne; Aamlid, Trygve S.; Alsheikh, Muath K; Amdahl, Helga; Dalmannsdottir, Sigridur; Hellton, Kristoffer Herland ; Jørgensen, Marit; Kovi, Mallikarjuna Rao; Mæland, Therese; Pashapu, Akhil Reddy; Stürite, Ievina; Thorarinsdottir, Thordis Linda; Windju, Susanne Skinnehaugen (2023). Securing adaptation of timothy cultivars under climate change and during seed multiplication. 35th EUCARPIA Fodder Crops and Amenity Grasses Section Conference. EUCARPIA Fodder Crops and Amenity Grasses Section; Agricultural Research Ltd., Troubsko, Czech Republic; Institute of Experimental Botany ASCR, v.v.i., Olomouc, Czech Republic.

Rognli, Odd Arne; Reddy Pashapu, Akhil; Kovi, Mallikarjuna Rao; Jørgensen, Marit; Dalmannsdottir, Sigridur; Aamlid, Trygve S.; Sturite, Ievina; Mæland, Therese; Hellton, Kristoffer Herland ; Thorarinsdottir, Thordis Linda; Amdahl, Helga; Alsheikh, Muath K; Windju, Susanne (2023). Genetiske endringer i nord-norske timoteisorter over tid og ved oppformering på ulike breddegrader. Avslutningsseminar, NFR prosjekt "Securing adaptation of timothy cultivars under climate change and during seed multiplication using genomics and big-data approaches", NFR prosjekt #303258. NIBIO Tromsø, Holt .

Aamlid, Trygve; Dalmannsdottir, Sigridur; Hellton, Kristoffer Herland ; Sturite, Ievina; Jørgensen, Marit; Amdahl, Helga; Knudsen, Geir; Skjørholm, Nils Ragnar S.; Pettersen, Trond; Rognli, Odd Arne (2023). Oppformering av de nordnorske timoteisortene Engmo og Noreng i Grimstad (Landvik), Steinkjer (Tuv) og Tromsø (Holt) gjennom tre generasjoner: Endringer i overvintringsevne. Timotei for Nord Norge. Sluttseminar i prosjektet NextTim. NIBIO/Graminor/NMBU.

Hellton, Kristoffer Herland ; Løland, Anders; Engebretsen, Solveig (2023). Alt du kan lære om statistisk modellering og maskinlæring på en dag. Kurs. Norsk Regnesentral.

Hellton, Kristoffer Herland ; Løland, Anders; Engebretsen, Solveig (2023). Alt du kan lære om statistisk modellering og maskinlæring på en dag. Kurs. Norsk Regnesentral.

Hellton, Kristoffer Herland ; Gjuvsland, Elin Ruhlin; Amdahl, Helga (2022). Film: Fremtidens gress.
https://nr.no/prosjekter/fremtidens-timotei-sorter

Hempel, Manuel; Hovland, Ellen-Margrethe; Hellton, Kristoffer Herland ; Roksvåg, Thea (2022). Vær- og klimaprognoser for framtidas grøntproduksjon. Gartnerhallen-seminar 2022. Gartnerhallen.

Hellton, Kristoffer Herland (2021). Er det mulig å regne seg frem til hvem som vinner stortingsvalget?.