2023

• Gryvill, Håkon; Tjelmeland, Håkon. (2023) A sparse matrix formulation of model-based ensemble Kalman filter. Statistics and computing. volum 33 (3).
  Vitenskapelig artikkel

2022

• Loe, Margrethe Kvale; Tjelmeland, Håkon. (2022) Ensemble updating of categorical state vectors. Computational statistics (Zeitschrift). volum 37.
  Vitenskapelig artikkel

2021

• 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. volum 16 (1).
  Vitenskapelig artikkel
• Loe, Margrethe Kvale; Grana, Dario; Tjelmeland, Håkon. (2021) Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors. Mathematical Geosciences. volum 53.
  Vitenskapelig artikkel

2020

• 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. volum 11.
  Vitenskapelig artikkel
• Loe, Margrethe Kvale; Tjelmeland, Håkon. (2020) Ensemble updating of binary state vectors by maximising the expected number of unchanged components. Scandinavian Journal of Statistics.
  Vitenskapelig artikkel

2019

• Luo, Xin; Tjelmeland, Håkon. (2019) A multiple-try Metropolis–Hastings algorithm with tailored proposals. Computational statistics (Zeitschrift).
  Vitenskapelig artikkel
• Luo, Xin; Tjelmeland, Håkon. (2019) Prior specification for binary Markov mesh models. Statistics and computing. volum 29 (2).
  Vitenskapelig artikkel
• 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. volum 67 (3).
  Vitenskapelig artikkel

2017

• 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. volum 1.
  Vitenskapelig artikkel

2016

• Arnesen, Petter; Tjelmeland, Håkon. (2016) Prior specification of neighbourhood and interaction structure in binary Markov random fields. Statistics and computing.
  Vitenskapelig artikkel
• Austad, Haakon; Tjelmeland, Håkon. (2016) Approximate computations for binary Markov random fields and their use in Bayesian models. Statistics and computing.
  Vitenskapelig artikkel

2015

• Arnesen, Petter; Tjelmeland, Håkon. (2015) Fully Bayesian Binary Markov Random Field Models: Prior Specification and Posterior Simulation. Scandinavian Journal of Statistics. volum 42 (4).
  Vitenskapelig artikkel
• Pfuhl, Gerit; Sandvik, Kristin; Biegler, Robert; Tjelmeland, Håkon. (2015) Identifying the computational parameters gone awry in psychosis. Lecture Notes in Computer Science (LNCS). volum 9250.
  Vitenskapelig artikkel

2013

• Toftaker, Håkon; Tjelmeland, Håkon. (2013) Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images. Mathematical Geosciences. volum 45 (4).
  Vitenskapelig artikkel

2012

• 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. volum 60 (3).
  Vitenskapelig artikkel
• Helland, Inge Svein; Sæbø, Solve; Tjelmeland, Håkon. (2012) Near optimal prediction from relevant components. Scandinavian Journal of Statistics. volum 39 (4).
  Vitenskapelig artikkel
• 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). volum 21 (3).
  Vitenskapelig artikkel

2011

• Hammer, Hugo Lewi; Tjelmeland, Håkon. (2011) Approximate forward–backward algorithm for a switching linear Gaussian model. Computational Statistics & Data Analysis. volum 55 (1).
  Vitenskapelig artikkel
• Pfuhl, Gerit; Tjelmeland, Håkon; Biegler, Robert. (2011) Precision and Reliability in Animal Navigation. Bulletin of Mathematical Biology. volum 73 (5).
  Vitenskapelig artikkel

2010

• Lødøen, Ole Petter; Tjelmeland, Håkon. (2010) Bayesian calibration of hydrocarbon reservoir models using an approximate reservoir simulator in the prior specification. Statistical Modelling. volum 10 (1).
  Vitenskapelig artikkel

2009

• 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. volum 78 (4).
  Vitenskapelig artikkel
• Scharpf, R. B.; Tjelmeland, Håkon; Parmigiani, G.; Nobel, A.B.. (2009) A Bayesian model for cross-study differential gene expression. Journal of the American Statistical Association. volum 104 (488).
  Vitenskapelig artikkel
• Scharpf, R. B.; Tjelmeland, Håkon; Parmigiani, G.; Nobel, A.B.. (2009) Rejoinder: A Bayesian model for cross-study differential gene expression. Journal of the American Statistical Association. volum 104.
  Vitenskapelig artikkel

2008

• Hammer, Hugo Lewi; Tjelmeland, Håkon. (2008) Control variates for the Metropolis--Hastings algorithm. Scandinavian Journal of Statistics. volum 35.
  Vitenskapelig artikkel
• Hammer, Hugo Lewi; Tjelmeland, Håkon. (2008) Control variates for the Metropolis-Hastings algorithm. Scandinavian Journal of Statistics. volum 35.
  Vitenskapelig artikkel
• Rabben, Tor Erik; Tjelmeland, Håkon; Ursin, Bjørn. (2008) Non-linear Bayesian joint inversion of seismic reflection coefficients. Geophysical Journal International. volum 173 (1).
  Vitenskapelig artikkel
• Shabalin, AA; Tjelmeland, Håkon; Fan, C; Perou, CM; Nobel, AB. (2008) Merging two gene-expression studies via cross-platform normalization. Bioinformatics. volum 24.
  Vitenskapelig artikkel

2007

• Eftedal, Olav Sande; Tjelmeland, Håkon; Brubakk, Alf O. (2007) Validation of decompression procedures based on detection of venous gas bubbles: a bayesian approach. Aviation, Space and Environmental Medicine. volum 78.
  Vitenskapelig artikkel
• Wu, YH; Tjelmeland, Håkon; West, M. (2007) Bayesian CART: Prior specification and posterior simulation. Journal of Computational And Graphical Statistics (JCGS). volum 16.
  Vitenskapelig artikkel

2006

• Eidsvik, Jo; Tjelmeland, Håkon. (2006) On directional Metropolis-Hastings algorithms. Statistics and computing. volum 16 (1).
  Vitenskapelig artikkel

2005

• Tjelmeland, Håkon; Eidsvik, Jo. (2005) Directional Metropolis-Hastings updates for posteriors with nonlinear likelihoods. Geostatistics Banff 2004.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2004

• Tjelmeland, Håkon; Eidsvik, Jo. (2004) On the use of local optimizations within Metropolis-Hastings updates. Journal of The Royal Statistical Society Series B-statistical Methodology. volum 66.
  Vitenskapelig artikkel

2003

• Tjelmeland, Håkon; Lund, Kjetill Vassmo. (2003) Bayesian modelling of spatial compositional data. Journal of Applied Statistics. volum 30.
  Vitenskapelig artikkel

2002

• Rue, Håvard; Tjelmeland, Håkon. (2002) Fitting Gaussian Markov random fields to Gaussian fields. Scandinavian Journal of Statistics.
  Vitenskapelig artikkel

2001

• Tjelmeland, Håkon. (2001) Contribution to discussion of Kennedy,M.C. and O'Hagan, A. (2001): Bayesian calibration of computer models. Journal of The Royal Statistical Society Series B-statistical Methodology. volum 63.
  Vitenskapelig artikkel
• Tjelmeland, Håkon; Hegstad, Bjørn Kåre. (2001) Mode jumping proposals in MCMC. Scandinavian Journal of Statistics. volum 28 (1).
  Vitenskapelig artikkel
• Holden, Lars; Skare, Øivind; Omre, Henning; Tjelmeland, Håkon. (2001) Sampling algorithms for Bayesian history matching. 2001. NR-notat (SAND/04/01).
  Rapport

1998

• Tjelmeland, Håkon; Besag, Julian. (1998) Markov random fields with higher order interactions. Scandinavian Journal of Statistics. volum 25 (3).
  Vitenskapelig artikkel

1997

• Omre, Henning; Tjelmeland, Håkon. (1997) Petroleum geostatistics. Geostatistics Wollongong '96.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Tjelmeland, Håkon; Omre, Henning. (1997) A complex sand-shale facies model conditioned on observations from wells, seismics and production. Geostatistics Wollongong '96.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Lia, Oddvar; Omre, Henning; Tjelmeland, Håkon; Holden, Lars; Egeland, Thore. (1997) Uncertainties in reservoir production forecasts. American Association of Petroleum Geologists Bulletin. volum 81 (5).
  Vitenskapelig artikkel

1996

• Lia, Oddvar; Tjelmeland, Håkon; Kjellesvik, Lars Edward. (1996) Modeling of facies architecture by marked point models. Ukjent.
  Vitenskapelig artikkel

1995

• Lia, Oddvar; Omre, Henning; Tjelmeland, Håkon; Holden, Lars; Egeland, Thore; Andersen, Tove; Hustad, Odd Steve; Qi, Yuanchang. (1995) The great reservoir uncertainty study - GRUS. Profit, Project Summary Reports, Reservoir Characterization Near Well Flow.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Tjelmeland, Håkon; Lia, Oddvar. (1995) A marked point process model in reservoir characterization. 1995.
  Rapport

1994

• Egeland, Thore; Omre, Henning; Lia, Oddvar; Tjelmeland, Håkon; Holden, Lars; Andersen, Tove. (1994) GRUS data analysis. 1994. NR-notat (SAND/17/94).
  Rapport
• Lia, Oddvar; Omre, Henning; Tjelmeland, Håkon; Holden, Lars; MacDonald, Alister; Hustad, Odd Steve; Qi, Yuanchang. (1994) GRUS - Great reservoir uncertainty study. Documentation of model. 1994. NR-notat (SAND/12/94).
  Rapport
• Lia, Oddvar; Omre, Henning; Tjelmeland, Håkon; Holden, Lars; MacDonald, Alister; Hustad, Odd Steve; Qi, Yuanchang. (1994) GRUS - Great reservoir uncertainty study. Documentation of results. 1994. NR-notat (SAND/13/94).
  Rapport
• Lia, Oddvar; Omre, Henning; Tjelmeland, Håkon; Holden, Lars; MacDonald, Alister; Hustad, Odd Steve; Qi, Yuanchang. (1994) GRUS - great reservoir uncertainty study summary report. 1994. NR-notat (SAND/11/94).
  Rapport

1993

• Clemetsen, Rolf; Georgsen, Frode; Hektoen, Anne-Lise; Holden, Lars; Lia, Oddvar; Tjelmeland, Håkon. (1993) MOHERES - A program system for simulation of reservoir architecture and reservoir properties. Version 3.1. 1993. NR-notat (SAND/09/93).
  Rapport
• Omre, Henning; Lia, Oddvar; Tjelmeland, Håkon; Hustad, Odd Steve; Qi, Yuanchang. (1993) Great reservoir uncertainty study. Preliminary version of documentation of models and test plan. 1993.
  Rapport
• Storvik, Geir Olve; Egeland, Thore; Holden, Lars; Tjelmeland, Håkon. (1993) Markov Chain simulations for analysis of marked point processes. 1993. Report at the Norwegian Computing Center (869).
  Rapport
• Tjelmeland, Håkon; Holden, Lars. (1993) Semi-markov random fields. Geostatistics Tróia '92.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

1992

• Clemetsen, Rolf; Georgsen, Frode; Hektoen, Anne-Lise; Holden, Lars; Tjelmeland, Håkon. (1992) MOHERES - a program system for simulation of reservoir architecture and reservoir properties. Version 3.0. 1992. NR-notat (SAND/12/92).
  Rapport
• Omre, Henning; Sølna, Knut; Tjelmeland, Håkon. (1992) Simulation of random functions on large lattices. Ukjent.
  Vitenskapelig artikkel
• Omre, Henning; Tjelmeland, Håkon. (1992) Modeling of the Statfjord formation Statfjord field. Stochastic production evaluation - Phase III. 1992.
  Rapport

1991

• Omre, Henning; Egeland, Thore; Holden, Lars; Lia, Oddvar; Tjelmeland, Håkon; MacDonald, Alister; Hustad, Odd Steve. (1991) GRUS-report: Outline of models and test plan. 1991. NR-notat (SAND/30/91).
  Rapport
• Omre, Henning; Sølna, Knut; Tjelmeland, Håkon. (1991) Simulation of random functions on large lattices. 1991.
  Rapport
• Omre, Henning; Tjelmeland, Håkon; Qi, Yuanchang; Hinderaker, Leif. (1991) Assessment of uncertainty in the production characteristics of a sandstone reservoir. Ukjent.
  Vitenskapelig artikkel

1990

• Holden, Lars; Tjelmeland, Håkon. (1990) A program system for simulation of reservoir architecture and reservoir properties. 1990. NR-notat (SAND/10/90).
  Rapport
• Holden, Lars; Tjelmeland, Håkon. (1990) MOHERES - a program system for simulation of reservoir properties. 1990. NR-notat (SAND/19/90).
  Rapport
• Høiberg, Jan; Omre, Henning; Tjelmeland, Håkon. (1990) A stochastic model for shale distribution in petroleum reservoirs. 1990.
  Rapport
• Høiberg, Jan; Omre, Henning; Tjelmeland, Håkon. (1990) Large scale barriers in extensively drilled reservoirs. 1990.
  Rapport
• Omre, Henning; Sølna, Knut; Tjelmeland, Håkon; Claesson, Lennart; Holter, Cathrine. (1990) Calcite cementation: description and production consequences. Ukjent.
  Vitenskapelig artikkel

1989

• Holbæk-Hanssen, Erik; Tjelmeland, Håkon; Johannessen, Ola M.; Olaussen, Tor; Karpuz, Ridvan. (1989) Speckle reduction and maximum likelihood classification of SAR images from sea ice recorded during MIZEX 87. Ukjent.
  Vitenskapelig artikkel
• Holbæk-Hanssen, Erik; Tjelmeland, Håkon; Wang, Bo; Karpuz, Ridvan. (1989) Classification of sea-ice using SAR data. Ukjent.
  Vitenskapelig artikkel
• Omre, Henning; Sølna, Knut; Tjelmeland, Håkon. (1989) Simulation of calcite cemented barriers in the TROLL field. 1989.
  Rapport
• Omre, Henning; Tjelmeland, Håkon. (1989) BARESI - BArriers in REservoirs by SImulation. 1989.
  Rapport
• Tjelmeland, Håkon; Omre, Henning. (1989) Modelling of the Statfjord formation, Statfjord field. Stochastic reservoir description. Phase II. 1989.
  Rapport
• Tjelmeland, Håkon; Wang, Bo. (1989) Filtrering og klassifikasjon av SAR-bilder over hav-is. 1989. ISBN 82-539-0311-1.
  Rapport

1988

• Halvorsen, Kjetil B.; Omre, Henning; Tjelmeland, Håkon. (1988) Simulating fractile characteristics of petroleum reservoirs. 1988.
  Rapport
• Høiberg, Jan; Omre, Henning; Tjelmeland, Håkon. (1988) Modeling of the Statfjord formation, Statfjord field; Stochastic reservoir description, phase I. 1988.
  Rapport