Håkon Tjelmeland
About
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.
Competencies
Publications
2022
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2022)
Ensemble updating of categorical state vectors.
Computational statistics (Zeitschrift).
volum 37.
Academic article
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).
Academic article
-
Loe, Margrethe Kvale;
Grana, Dario;
Tjelmeland, Håkon.
(2021)
Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors.
Mathematical Geosciences.
volum 53.
Academic article
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.
Academic article
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2020)
Ensemble updating of binary state vectors by maximising the expected number of unchanged components.
Scandinavian Journal of Statistics.
Academic article
2019
-
Luo, Xin;
Tjelmeland, Håkon.
(2019)
A multiple-try Metropolis–Hastings algorithm with tailored proposals.
Computational statistics (Zeitschrift).
Academic article
-
Luo, Xin;
Tjelmeland, Håkon.
(2019)
Prior specification for binary Markov mesh models.
Statistics and computing.
volum 29 (2).
Academic article
-
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).
Academic article
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.
Academic article
2016
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2016)
Prior specification of neighbourhood and interaction structure in binary Markov random fields.
Statistics and computing.
Academic article
-
Austad, Haakon;
Tjelmeland, Håkon.
(2016)
Approximate computations for binary Markov random fields and their use in Bayesian models.
Statistics and computing.
Academic article
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).
Academic article
-
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.
Academic article
2013
-
Toftaker, Håkon;
Tjelmeland, Håkon.
(2013)
Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images.
Mathematical Geosciences.
volum 45 (4).
Academic article
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).
Academic article
-
Helland, Inge Svein;
Sæbø, Solve;
Tjelmeland, Håkon.
(2012)
Near optimal prediction from relevant components.
Scandinavian Journal of Statistics.
volum 39 (4).
Academic article
-
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).
Academic article
2011
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2011)
Approximate forward–backward algorithm for a switching linear Gaussian model.
Computational Statistics & Data Analysis.
volum 55 (1).
Academic article
-
Pfuhl, Gerit;
Tjelmeland, Håkon;
Biegler, Robert.
(2011)
Precision and Reliability in Animal Navigation.
Bulletin of Mathematical Biology.
volum 73 (5).
Academic article
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).
Academic article
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).
Academic article
-
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).
Academic article
-
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.
Academic article
2008
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis--Hastings algorithm.
Scandinavian Journal of Statistics.
volum 35.
Academic article
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis-Hastings algorithm.
Scandinavian Journal of Statistics.
volum 35.
Academic article
-
Rabben, Tor Erik;
Tjelmeland, Håkon;
Ursin, Bjørn.
(2008)
Non-linear Bayesian joint inversion of seismic reflection coefficients.
Geophysical Journal International.
volum 173 (1).
Academic article
-
Shabalin, AA;
Tjelmeland, Håkon;
Fan, C;
Perou, CM;
Nobel, AB.
(2008)
Merging two gene-expression studies via cross-platform normalization.
Bioinformatics.
volum 24.
Academic article
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.
Academic article
-
Wu, YH;
Tjelmeland, Håkon;
West, M.
(2007)
Bayesian CART: Prior specification and posterior simulation.
Journal of Computational And Graphical Statistics (JCGS).
volum 16.
Academic article
2006
-
Eidsvik, Jo;
Tjelmeland, Håkon.
(2006)
On directional Metropolis-Hastings algorithms.
Statistics and computing.
volum 16 (1).
Academic article
2005
-
Tjelmeland, Håkon;
Eidsvik, Jo.
(2005)
Directional Metropolis-Hastings updates for posteriors with nonlinear likelihoods.
Geostatistics Banff 2004.
Academic chapter/article/Conference paper
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.
Academic article
2003
-
Tjelmeland, Håkon;
Lund, Kjetill Vassmo.
(2003)
Bayesian modelling of spatial compositional data.
Journal of Applied Statistics.
volum 30.
Academic article
2002
-
Rue, Håvard;
Tjelmeland, Håkon.
(2002)
Fitting Gaussian Markov random fields to Gaussian fields.
Scandinavian Journal of Statistics.
Academic article
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.
Academic article
-
Tjelmeland, Håkon;
Hegstad, Bjørn Kåre.
(2001)
Mode jumping proposals in MCMC.
Scandinavian Journal of Statistics.
volum 28 (1).
Academic article
-
Holden, Lars;
Skare, Øivind;
Omre, Henning;
Tjelmeland, Håkon.
(2001)
Sampling algorithms for Bayesian history matching.
2001. NR-notat (SAND/04/01).
Report
1998
-
Tjelmeland, Håkon;
Besag, Julian.
(1998)
Markov random fields with higher order interactions.
Scandinavian Journal of Statistics.
volum 25 (3).
Academic article
1997
-
Omre, Henning;
Tjelmeland, Håkon.
(1997)
Petroleum geostatistics.
Geostatistics Wollongong '96.
Academic chapter/article/Conference paper
-
Tjelmeland, Håkon;
Omre, Henning.
(1997)
A complex sand-shale facies model conditioned on observations from wells, seismics and production.
Geostatistics Wollongong '96.
Academic chapter/article/Conference paper
-
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).
Academic article
1996
-
Lia, Oddvar;
Tjelmeland, Håkon;
Kjellesvik, Lars Edward.
(1996)
Modeling of facies architecture by marked point models.
Ukjent.
Academic article
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.
Academic chapter/article/Conference paper
-
Tjelmeland, Håkon;
Lia, Oddvar.
(1995)
A marked point process model in reservoir characterization.
1995.
Report
1994
-
Egeland, Thore;
Omre, Henning;
Lia, Oddvar;
Tjelmeland, Håkon;
Holden, Lars;
Andersen, Tove.
(1994)
GRUS data analysis.
1994. NR-notat (SAND/17/94).
Report
-
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).
Report
-
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).
Report
-
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).
Report
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).
Report
-
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.
Report
-
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).
Report
-
Tjelmeland, Håkon;
Holden, Lars.
(1993)
Semi-markov random fields.
Geostatistics Tróia '92.
Academic chapter/article/Conference paper
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).
Report
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1992)
Simulation of random functions on large lattices.
Ukjent.
Academic article
-
Omre, Henning;
Tjelmeland, Håkon.
(1992)
Modeling of the Statfjord formation Statfjord field. Stochastic production evaluation - Phase III.
1992.
Report
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).
Report
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1991)
Simulation of random functions on large lattices.
1991.
Report
-
Omre, Henning;
Tjelmeland, Håkon;
Qi, Yuanchang;
Hinderaker, Leif.
(1991)
Assessment of uncertainty in the production characteristics of a sandstone reservoir.
Ukjent.
Academic article
1990
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
A program system for simulation of reservoir architecture and reservoir properties.
1990. NR-notat (SAND/10/90).
Report
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
MOHERES - a program system for simulation of reservoir properties.
1990. NR-notat (SAND/19/90).
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
A stochastic model for shale distribution in petroleum reservoirs.
1990.
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
Large scale barriers in extensively drilled reservoirs.
1990.
Report
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon;
Claesson, Lennart;
Holter, Cathrine.
(1990)
Calcite cementation: description and production consequences.
Ukjent.
Academic article
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.
Academic article
-
Holbæk-Hanssen, Erik;
Tjelmeland, Håkon;
Wang, Bo;
Karpuz, Ridvan.
(1989)
Classification of sea-ice using SAR data.
Ukjent.
Academic article
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1989)
Simulation of calcite cemented barriers in the TROLL field.
1989.
Report
-
Omre, Henning;
Tjelmeland, Håkon.
(1989)
BARESI - BArriers in REservoirs by SImulation.
1989.
Report
-
Tjelmeland, Håkon;
Omre, Henning.
(1989)
Modelling of the Statfjord formation, Statfjord field. Stochastic reservoir description. Phase II.
1989.
Report
-
Tjelmeland, Håkon;
Wang, Bo.
(1989)
Filtrering og klassifikasjon av SAR-bilder over hav-is.
1989. ISBN 82-539-0311-1.
Report
1988
-
Halvorsen, Kjetil B.;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Simulating fractile characteristics of petroleum reservoirs.
1988.
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Modeling of the Statfjord formation, Statfjord field; Stochastic reservoir description, phase I.
1988.
Report
Journal publications
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2022)
Ensemble updating of categorical state vectors.
Computational statistics (Zeitschrift).
volum 37.
Academic article
-
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).
Academic article
-
Loe, Margrethe Kvale;
Grana, Dario;
Tjelmeland, Håkon.
(2021)
Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors.
Mathematical Geosciences.
volum 53.
Academic article
-
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.
Academic article
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2020)
Ensemble updating of binary state vectors by maximising the expected number of unchanged components.
Scandinavian Journal of Statistics.
Academic article
-
Luo, Xin;
Tjelmeland, Håkon.
(2019)
A multiple-try Metropolis–Hastings algorithm with tailored proposals.
Computational statistics (Zeitschrift).
Academic article
-
Luo, Xin;
Tjelmeland, Håkon.
(2019)
Prior specification for binary Markov mesh models.
Statistics and computing.
volum 29 (2).
Academic article
-
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).
Academic article
-
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.
Academic article
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2016)
Prior specification of neighbourhood and interaction structure in binary Markov random fields.
Statistics and computing.
Academic article
-
Austad, Haakon;
Tjelmeland, Håkon.
(2016)
Approximate computations for binary Markov random fields and their use in Bayesian models.
Statistics and computing.
Academic article
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2015)
Fully Bayesian Binary Markov Random Field Models: Prior Specification and Posterior Simulation.
Scandinavian Journal of Statistics.
volum 42 (4).
Academic article
-
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.
Academic article
-
Toftaker, Håkon;
Tjelmeland, Håkon.
(2013)
Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images.
Mathematical Geosciences.
volum 45 (4).
Academic article
-
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).
Academic article
-
Helland, Inge Svein;
Sæbø, Solve;
Tjelmeland, Håkon.
(2012)
Near optimal prediction from relevant components.
Scandinavian Journal of Statistics.
volum 39 (4).
Academic article
-
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).
Academic article
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2011)
Approximate forward–backward algorithm for a switching linear Gaussian model.
Computational Statistics & Data Analysis.
volum 55 (1).
Academic article
-
Pfuhl, Gerit;
Tjelmeland, Håkon;
Biegler, Robert.
(2011)
Precision and Reliability in Animal Navigation.
Bulletin of Mathematical Biology.
volum 73 (5).
Academic article
-
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).
Academic article
-
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).
Academic article
-
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).
Academic article
-
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.
Academic article
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis--Hastings algorithm.
Scandinavian Journal of Statistics.
volum 35.
Academic article
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis-Hastings algorithm.
Scandinavian Journal of Statistics.
volum 35.
Academic article
-
Rabben, Tor Erik;
Tjelmeland, Håkon;
Ursin, Bjørn.
(2008)
Non-linear Bayesian joint inversion of seismic reflection coefficients.
Geophysical Journal International.
volum 173 (1).
Academic article
-
Shabalin, AA;
Tjelmeland, Håkon;
Fan, C;
Perou, CM;
Nobel, AB.
(2008)
Merging two gene-expression studies via cross-platform normalization.
Bioinformatics.
volum 24.
Academic article
-
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.
Academic article
-
Wu, YH;
Tjelmeland, Håkon;
West, M.
(2007)
Bayesian CART: Prior specification and posterior simulation.
Journal of Computational And Graphical Statistics (JCGS).
volum 16.
Academic article
-
Eidsvik, Jo;
Tjelmeland, Håkon.
(2006)
On directional Metropolis-Hastings algorithms.
Statistics and computing.
volum 16 (1).
Academic article
-
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.
Academic article
-
Tjelmeland, Håkon;
Lund, Kjetill Vassmo.
(2003)
Bayesian modelling of spatial compositional data.
Journal of Applied Statistics.
volum 30.
Academic article
-
Rue, Håvard;
Tjelmeland, Håkon.
(2002)
Fitting Gaussian Markov random fields to Gaussian fields.
Scandinavian Journal of Statistics.
Academic article
-
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.
Academic article
-
Tjelmeland, Håkon;
Hegstad, Bjørn Kåre.
(2001)
Mode jumping proposals in MCMC.
Scandinavian Journal of Statistics.
volum 28 (1).
Academic article
-
Tjelmeland, Håkon;
Besag, Julian.
(1998)
Markov random fields with higher order interactions.
Scandinavian Journal of Statistics.
volum 25 (3).
Academic article
-
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).
Academic article
-
Lia, Oddvar;
Tjelmeland, Håkon;
Kjellesvik, Lars Edward.
(1996)
Modeling of facies architecture by marked point models.
Ukjent.
Academic article
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1992)
Simulation of random functions on large lattices.
Ukjent.
Academic article
-
Omre, Henning;
Tjelmeland, Håkon;
Qi, Yuanchang;
Hinderaker, Leif.
(1991)
Assessment of uncertainty in the production characteristics of a sandstone reservoir.
Ukjent.
Academic article
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon;
Claesson, Lennart;
Holter, Cathrine.
(1990)
Calcite cementation: description and production consequences.
Ukjent.
Academic article
-
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.
Academic article
-
Holbæk-Hanssen, Erik;
Tjelmeland, Håkon;
Wang, Bo;
Karpuz, Ridvan.
(1989)
Classification of sea-ice using SAR data.
Ukjent.
Academic article
Part of book/report
-
Tjelmeland, Håkon;
Eidsvik, Jo.
(2005)
Directional Metropolis-Hastings updates for posteriors with nonlinear likelihoods.
Geostatistics Banff 2004.
Academic chapter/article/Conference paper
-
Omre, Henning;
Tjelmeland, Håkon.
(1997)
Petroleum geostatistics.
Geostatistics Wollongong '96.
Academic chapter/article/Conference paper
-
Tjelmeland, Håkon;
Omre, Henning.
(1997)
A complex sand-shale facies model conditioned on observations from wells, seismics and production.
Geostatistics Wollongong '96.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
Tjelmeland, Håkon;
Holden, Lars.
(1993)
Semi-markov random fields.
Geostatistics Tróia '92.
Academic chapter/article/Conference paper
Report
-
Holden, Lars;
Skare, Øivind;
Omre, Henning;
Tjelmeland, Håkon.
(2001)
Sampling algorithms for Bayesian history matching.
2001. NR-notat (SAND/04/01).
Report
-
Tjelmeland, Håkon;
Lia, Oddvar.
(1995)
A marked point process model in reservoir characterization.
1995.
Report
-
Egeland, Thore;
Omre, Henning;
Lia, Oddvar;
Tjelmeland, Håkon;
Holden, Lars;
Andersen, Tove.
(1994)
GRUS data analysis.
1994. NR-notat (SAND/17/94).
Report
-
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).
Report
-
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).
Report
-
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).
Report
-
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).
Report
-
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.
Report
-
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).
Report
-
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).
Report
-
Omre, Henning;
Tjelmeland, Håkon.
(1992)
Modeling of the Statfjord formation Statfjord field. Stochastic production evaluation - Phase III.
1992.
Report
-
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).
Report
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1991)
Simulation of random functions on large lattices.
1991.
Report
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
A program system for simulation of reservoir architecture and reservoir properties.
1990. NR-notat (SAND/10/90).
Report
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
MOHERES - a program system for simulation of reservoir properties.
1990. NR-notat (SAND/19/90).
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
A stochastic model for shale distribution in petroleum reservoirs.
1990.
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
Large scale barriers in extensively drilled reservoirs.
1990.
Report
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1989)
Simulation of calcite cemented barriers in the TROLL field.
1989.
Report
-
Omre, Henning;
Tjelmeland, Håkon.
(1989)
BARESI - BArriers in REservoirs by SImulation.
1989.
Report
-
Tjelmeland, Håkon;
Omre, Henning.
(1989)
Modelling of the Statfjord formation, Statfjord field. Stochastic reservoir description. Phase II.
1989.
Report
-
Tjelmeland, Håkon;
Wang, Bo.
(1989)
Filtrering og klassifikasjon av SAR-bilder over hav-is.
1989. ISBN 82-539-0311-1.
Report
-
Halvorsen, Kjetil B.;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Simulating fractile characteristics of petroleum reservoirs.
1988.
Report
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Modeling of the Statfjord formation, Statfjord field; Stochastic reservoir description, phase I.
1988.
Report
Teaching
Courses
Media
2022
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Academic lectureGryvill, Håkon; Tjelmeland, Håkon. (2022) A sparse matrix formulation of the model-based ensemble Kalman filter. EnKF workshop . NORCE; Balestrand. 2022-05-30 - 2022-06-02.
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Academic lectureGryvill, Håkon; Tjelmeland, Håkon. (2022) A sparse matrix formulation of the model-based ensemble Kalman filter. GAMES meeting . GAMES; Trondheim. 2022-05-09 - 2022-05-10.
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Academic lectureTjelmeland, Håkon; Gryvill, Håkon; Loe, Margrethe Kvale. (2022) Model-based ensemble Kalman filter. 21st Annual Conference of the International Association for Mathematical Geosciences . International Association for Mathematical Geosciences; Nancy. 2022-08-30 - 2022-09-03.
2021
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Academic lectureTjelmeland, Håkon; Loe, Margrethe Kvale. (2021) A generalisation of the updating step i EnKF. 2021 EnKF Workshop . NORCE; Digitalt. 2021-06-07 - 2021-06-11.
2020
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Academic lecturePfuhl, Gerit; Tjelmeland, Håkon. (2020) Who's more Bayesian? Belief updating and no conservatism bias in Schizophrenia. The 53rd Annual Meeting of the Society for Mathematical Psychology (MathPsych2020) . Mathematical Psychology Association; virtual (Toronto). 2020-07-20 - 2020-08-01.
2019
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Academic lectureLoe, Margrethe Kvale; Tjelmeland, Håkon. (2019) Ensemble Updating of Binary State Vectors by Maximising the Expected Number of Unchanged Components. Petroleum Geostatistics 2019 . EAGE; Firenze. 2019-09-02 - 2019-09-06.
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PosterPfuhl, Gerit; Tjelmeland, Håkon. (2019) Probabilistic reasoning in schizophrenia is volatile but not biased. Computational and cognitive neuroscience conference . CCN; Berlin. 2019-09-13 - 2019-09-16.
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Academic lectureTjelmeland, Håkon; Luo, Xin; Fjeldstad, Torstein Mæland. (2019) A Flexible Markov Mesh Prior for Lithology/fluid Class Prediction. Petroleum Geostatistics 2019 . EAGE; Firenze. 2019-09-02 - 2019-09-06.
2018
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PosterPfuhl, Gerit; Tjelmeland, Håkon. (2018) On probability estimates and who is more aberrant - patients with Schizophrenia or Healthy Controls?. Brain Prize conference Neuroscience of Prediction . Lundbeckfond; Rungstedgaard. 2018-04-15 - 2018-04-18.
2017
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PosterKreis, Isabel Viola; Sandvik, Kristin; Tjelmeland, Håkon; Biegler, Robert; Pfuhl, Gerit. (2017) Probabilistic inference in psychosis and autism. 5th National PhD Conference in Neuroscience . Norwegian Research School in Neuroscience; Sommarøy, TROMS. 2017-09-20 - 2017-09-22.
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PosterKreis, Isabel Viola; Tjelmeland, Håkon; Biegler, Robert; Tröbinger, Luzia Rosa; Pfuhl, Gerit. (2017) Ignorance or awareness of changes measured in a probabilistic inference task. The Brain Prize Meeting 2017 ; Middelfart. 2017-10-30 - 2017-11-01.
2012
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PosterHåkon M., Austad; Tjelmeland, Håkon. (2012) Approximations and bounds for binary Markov random fields. Geostats 2012, Ninth International Geostatistics Congress ; Oslo. 2012-06-11 - 2012-06-15.
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Academic lectureHåkon, Toftaker; Tjelmeland, Håkon. (2012) Construction of binary multi-grid Markov random field models from training images. Geostats 2012, Ninth International Geostatistics Congress ; Oslo. 2012-06-11 - 2012-06-15.
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Academic lectureTjelmeland, Håkon; Håkon, Toftaker. (2012) On the construction of discrete distributions from training images. Geostats 2012, Ninth International Geostatistics Congress ; Oslo. 2012-06-11 - 2012-06-15.
2011
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Academic lectureTjelmeland, Håkon. (2011) An approximate forward-backward algorithm. Statistical Mechanics of Inference ; Trondheim. 2011-09-05 - 2011-09-08.
2010
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Academic lectureHelland, Inge; Sæbø, Solve; Tjelmeland, Håkon. (2010) Bayes PLS: Near optimal prediction from relevant components. International Biometric Conference ; Florianopolis, Brazil. 2010-12-05 - 2010-12-10.
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Academic lectureSæbø, Solve; Helland, Inge; Tjelmeland, Håkon. (2010) Near optimal prediction from relevant components with Bayes PLS. Det 21. Norske kjemometrisymposium, 2010 ; Sundvolden Hotel, Hole, Norway. 2010-03-08 - 2010-03-10.
2007
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Academic lectureHammer, Hugo Lewi; Tjelmeland, Håkon. (2007) Lithology/Fluid Prediction by Simulating from the Posterior of a Markov Chain Prior Bayesian Model. Petroleum Geostatistics . EAGE, European Association of Geoscientists and Engineers; Cascais. 2007-09-10 - 2007-09-14.
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Academic lectureLødøen, Ole Petter; Tjelmeland, Håkon. (2007) Bayesian calibration of reservoir models using a coarse-scale reservoir simulator in the prior specification. Petroleum Geostatistics . EAGE, European Association of Geoscientists and Engineers; Cascais. 2007-09-10 - 2007-09-14.
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Academic lectureRabben, Tor Erik; Tjelmeland, Håkon; Ursin, Bjørn. (2007) Nonlinear Bayesian joint inversion of seismic reflection coefficients. Petroleum Geostatistics 2007, Cascais, Portugal . EAGE; Cascais. 2007-09-10 - 2007-09-14.
2006
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Academic lectureEftedal, Olav Sande; Tjelmeland, Håkon; Brubakk, Alf O. (2006) Bubble detection and Bayesian statistics for validation of decompression tables. 32nd Annual Meeting of the EUBS, Bergen, Norway, August 23.-26., 2006 . European Underwater and Baromedical Society; Bergen. 2006-08-23 - 2006-08-26.
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Academic lectureTjelmeland, Håkon. (2006) A Bayesian Model for Cross-Study Differential Gene Expression. seminar . Inst. of statistics and decision sciences, Duke university; Durham, North Carolina. 2006-12-08.
2003
-
Academic lectureTjelmeland, Håkon. (2003) Directional Metropolis-Hastings algorithms. [Mangler data] . Department of Statistics and Operations Research, The University of North Carolina at Chapell Hill; North Carolina, USA. 2003-11-10.
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Academic lectureTjelmeland, Håkon. (2003) Fitting Gaussian Markov random fields to Gaussian fields. [Mangler data] . Institute of Statistics and Decision Sciences, Duke University; North Carolina, USA. 2003-10-03.
2001
-
Academic lectureTjelmeland, Håkon. (2001) Fitting Gaussian Markov random fields to Gaussian fields. The 53rd Session of the International Statistical Institute . [Mangler data]; Seoul, 22-29 August 2001.
1999
-
Academic lectureTjelmeland, Håkon. (1999) Conditioning of permeability fields to production data: modelling and simulation algorithm. Highly Structured Stochastic Systems: Statistical modelling of spatial and space-time processes . [Mangler data]; Luminy, Frankrike.
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Academic lectureTjelmeland, Håkon; Hegstad, Bjørn Kåre. (1999) Mode jumping proposals in MCMC. Second European Conference on Highly Structured Stochastic Syst ems . [Mangler data]; Pavia, Italia.
1998
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Popular scientific lectureTjelmeland, Håkon. (1998) The Bayesian framework for knowledge and data integration. 3rd Norwegian Heterogeneity Conference . [Mangler data]; Gardermoen.
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Popular scientific lectureTjelmeland, Håkon; Hegstad, Bjørn Kåre. (1998) Conditioning on dynamic data in a Bayesian framework. FORCE-seminar: Conditioning of Reservoir Models to Dynamic Data . [Mangler data]; [Mangler data].
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Popular scientific lectureTjelmeland, Håkon; Omre, Henning; Otterlei, Cecilie; Oulie, Kjell Øivind. (1998) Integration of information from production tests and grain size distribution in water acquifers. Second IMA Conference on Modelling Permeable Rocks - Advances i n the Quantification of Geology for Petroleum and Groundwater A pplications . [Mangler data]; [Mangler data].
1997
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Academic lectureTjelmeland, Håkon. (1997) A note on the Bayesian approach to history matching of reservoir characteristics. The Third Annual Conference of the International Association fo r Mathematical Geology . [Mangler data]; [Mangler data].
1996
-
Academic lectureTjelmeland, Håkon. (1996) Modeling of the spatial facies distribution by Markov random fields. The Fifth International Geostatistical Congress . [Mangler data]; [Mangler data].
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Academic lectureKjellesvik, Lars Edward; Lia, Oddvar; Tjelmeland, Håkon. (1996) A flexible stochastic model for different depositional environments (SPE35481). NPF/SPE European 3-D Reservoir Modelling Conference ; 1996-04-16.
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Academic lectureLia, Oddvar; Tjelmeland, Håkon; Kjellesvik, Lars Edward. (1996) Modelling of facies architecture by marked point models. The Fifth International Geostatistical Congress . [Mangler data]; Wollongong. 1996-09-22 - 1996-09-27.
1992
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Academic lectureHolden, Lars; Omre, Henning; Tjelmeland, Håkon. (1992) Integrated Reservoir Description, SPE 24261-MS. 1992 European Petroleum Computer Conference . Society of Petroleum Engineers; Stavanger. 1992-05-24 - 1992-05-27.
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Academic lectureTyler, Kelly; Georgsen, Frode; Henriquez, Adolfo; Holden, Lars; Tjelmeland, Håkon. (1992) A program for 3-D modelling of heterogeneities in a fluvial reservoir. Third European Conference on the Mathematics of Oil Recovery . Delft University of Technology; Delft. 1992-06-17.
1991
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Academic lectureTjelmeland, Håkon. (1991) Simulering av kontinuerlige stokastiske felt. Geomøte -91, Oljedirektoratet. Stavanger ; 1991-02-14.