Håkon Tjelmeland

Professor

Department of Mathematical Sciences

haakon.tjelmeland@ntnu.no

Sentralbygg 2, 1032, Gløshaugen, Alfred Getz vei 1

haakon.tjelmeland@ntnu.no

Håkon Tjelmeland is a Professor at the Department of Mathematical Sciences. He belongs to The Statistics Group. Tjelmeland has a MSc in Industrial Mathematics and a PhD in Statistics, both from NTNU.

Research areas

Computational and spatial statistics.
Bayesian modelling and inference.
Statistical modelling for petroleum reservoir evaluation.

Work Experience

2006- Professor in Statistics, NTNU.
1997-2006 Associate Professor in Statistics, NTNU.
2003-2004 Sabbatical at the Statistical and Applied Mathematical Sciences Institute (SAMSI) and Institute of Statistics and Decision Sciences, Duke University.
1992-1996 PhD position in Statistics at the Dept. of Mathematical Sciences, NTNU. The fall of 1994 Visiting Scholar at the Department of Statistics, University of Washington.
1988-1996 Research Scientist in the SAND-group (Statistical Analysis of Natural resource Data) at the Norwegian Computing Center.

External Projects

Participant in the GAMES (Geophysics and Applied Mathematics in Exploration and Safe production) project.
Participant in the SFI Center for Geophysical Forcasting.
Has previously participated in the URE (Uncertainty in Reservoir Evaluation) project.

Professor Tjelmeland has supervised 6 graduated doctoral candidates and is currently supervising 2 PhD candidates.

Courses

Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

Journal publications

Kreis, Isabel Viola; Biegler, Robert; Tjelmeland, Håkon; Mittner, Matthias; Reitan, Solveig Merete Klæbo; Pfuhl, Gerit. (2021) Overestimation of volatility in schizophrenia and autism? A comparative study using a probabilistic reasoning task. PLOS ONE. vol. 16 (1).
Loe, Margrethe Kvale; Grana, Dario; Tjelmeland, Håkon. (2021) Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors. Mathematical Geosciences. vol. 53.
Hegelstad, Wenche; Kreis, Isabel Viola; Tjelmeland, Håkon; Pfuhl, Gerit. (2020) Psychosis and Psychotic-Like Symptoms Affect Cognitive Abilities but Not Motivation in a Foraging Task. Frontiers in Psychology. vol. 11.
Loe, Margrethe Kvale; Tjelmeland, Håkon. (2020) Ensemble updating of binary state vectors by maximising the expected number of unchanged components. Scandinavian Journal of Statistics.
Luo, Xin; Tjelmeland, Håkon. (2019) A multiple-try Metropolis–Hastings algorithm with tailored proposals. Computational statistics (Zeitschrift).
Luo, Xin; Tjelmeland, Håkon. (2019) Prior specification for binary Markov mesh models. Statistics and computing. vol. 29 (2).
Tjelmeland, Håkon; Luo, Xin; Fjeldstad, Torstein Mæland. (2019) A Bayesian model for lithology/fluid class prediction using a Markov mesh prior fitted from a training image. Geophysical Prospecting. vol. 67 (3).
Langaas, Mette; Buan, Aslak Bakke; Rønning, Frode; Tjelmeland, Håkon; Skauvold, Jacob; Thaule, Marius. (2017) Læringsressurser i grunnutdanningen i matematikk - kvalitet, tilgjengelighet og differensiering. Læring om læring. vol. 1.
Arnesen, Petter; Tjelmeland, Håkon. (2016) Prior specification of neighbourhood and interaction structure in binary Markov random fields. Statistics and computing.
Austad, Haakon; Tjelmeland, Håkon. (2016) Approximate computations for binary Markov random fields and their use in Bayesian models. Statistics and computing.
Arnesen, Petter; Tjelmeland, Håkon. (2015) Fully Bayesian Binary Markov Random Field Models: Prior Specification and Posterior Simulation. Scandinavian Journal of Statistics. vol. 42 (4).
Pfuhl, Gerit; Sandvik, Kristin; Biegler, Robert; Tjelmeland, Håkon. (2015) Identifying the computational parameters gone awry in psychosis. Lecture Notes in Computer Science (LNCS). vol. 9250.
Toftaker, Håkon; Tjelmeland, Håkon. (2013) Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images. Mathematical Geosciences. vol. 45 (4).
Hammer, Hugo Lewi; Kolbjørnsen, Odd; Tjelmeland, Håkon; Buland, Arild. (2012) Lithology and fluid prediction from prestack seismic data using a Bayesian model with Markov process prior. Geophysical Prospecting. vol. 60 (3).
Helland, Inge Svein; Sæbø, Solve; Tjelmeland, Håkon. (2012) Near optimal prediction from relevant components. Scandinavian Journal of Statistics. vol. 39 (4).
Tjelmeland, Håkon; Austad, Haakon. (2012) Exact and Approximate Recursive Calculations for Binary Markov Random Fields Defined on Graphs. Journal of Computational And Graphical Statistics (JCGS). vol. 21 (3).
Hammer, Hugo Lewi; Tjelmeland, Håkon. (2011) Approximate forward–backward algorithm for a switching linear Gaussian model. Computational Statistics & Data Analysis. vol. 55 (1).
Pfuhl, Gerit; Tjelmeland, Håkon; Biegler, Robert. (2011) Precision and Reliability in Animal Navigation. Bulletin of Mathematical Biology. vol. 73 (5).
Lødøen, Ole Petter; Tjelmeland, Håkon. (2010) Bayesian calibration of hydrocarbon reservoir models using an approximate reservoir simulator in the prior specification. Statistical Modelling. vol. 10 (1).
Pfuhl, Gerit; Tjelmeland, Håkon; Molden, Sturla; Biegler, Robert. (2009) Optimal cache search depends on precision of spatial memory and pilfering, but what if that knowledge is not perfect?. Animal Behaviour. vol. 78 (4).

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