Håkon Tjelmeland
Om
Håkon Tjelmeland er professor ved Institutt for matematiske fag. Han tilhører Gruppen for statistikk. Tjelmeland er utdannet sivilingeniør i industriell matematikk, og har en doktorgrad i statistikk, begge fra NTNU.
Kompetanseord
Publikasjoner
2024
-
Gryvill, Håkon;
Grana, Dario;
Tjelmeland, Håkon.
(2024)
Bayesian Ensemble Kalman Filter for Gaussian Mixture Models.
Mathematical Geosciences
Vitenskapelig artikkel
2023
-
Gryvill, Håkon;
Tjelmeland, Håkon.
(2023)
A sparse matrix formulation of model-based ensemble Kalman filter.
Statistics and computing
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Riegler, Michael;
Tjelmeland, Håkon.
(2023)
Approximate Bayesian Inference Based on Expected Evaluation.
Bayesian Analysis
Vitenskapelig artikkel
2022
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2022)
Ensemble updating of categorical state vectors.
Computational statistics (Zeitschrift)
Vitenskapelig artikkel
2021
-
Loe, Margrethe Kvale;
Grana, Dario;
Tjelmeland, Håkon.
(2021)
Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors.
Mathematical Geosciences
Vitenskapelig artikkel
-
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
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
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
-
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
Vitenskapelig artikkel
-
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
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
Vitenskapelig artikkel
2016
-
Austad, Haakon;
Tjelmeland, Håkon.
(2016)
Approximate computations for binary Markov random fields and their use in Bayesian models.
Statistics and computing
Vitenskapelig artikkel
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2016)
Prior specification of neighbourhood and interaction structure in binary Markov random fields.
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
Vitenskapelig artikkel
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2015)
Prior construction for discrete Markov models.
Skipnes kommunikasjon as
Doktorgradsavhandling
-
Pfuhl, Gerit;
Sandvik, Kristin;
Biegler, Robert;
Tjelmeland, Håkon.
(2015)
Identifying the computational parameters gone awry in psychosis.
Lecture Notes in Computer Science (LNCS)
Vitenskapelig artikkel
2013
-
Toftaker, Håkon;
Tjelmeland, Håkon.
(2013)
Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images.
Mathematical Geosciences
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
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)
Vitenskapelig artikkel
-
Helland, Inge Svein;
Sæbø, Solve;
Tjelmeland, Håkon.
(2012)
Near optimal prediction from relevant components.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Martinelli, Gabriele;
Eidsvik, Jo;
Hauge, Ragnar;
Tjelmeland, Håkon.
(2012)
Petroleum exploration with Bayesian Networks - From prospect risk assessment to optimal exploration.
Doktoravhandlinger ved NTNU (2012:273)
Doktorgradsavhandling
2011
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2011)
Approximate forward–backward algorithm for a switching linear Gaussian model.
Computational Statistics & Data Analysis
Vitenskapelig artikkel
-
Pfuhl, Gerit;
Tjelmeland, Håkon;
Biegler, Robert.
(2011)
Precision and Reliability in Animal Navigation.
Bulletin of Mathematical Biology
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
Vitenskapelig artikkel
2009
-
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
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
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
2008
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis-Hastings algorithm.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Shabalin, AA;
Tjelmeland, Håkon;
Fan, C;
Perou, CM;
Nobel, AB.
(2008)
Merging two gene-expression studies via cross-platform normalization.
Bioinformatics
Vitenskapelig artikkel
-
Rabben, Tor Erik;
Tjelmeland, Håkon;
Ursin, Bjørn.
(2008)
Non-linear Bayesian joint inversion of seismic reflection coefficients.
Geophysical Journal International
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis--Hastings algorithm.
Scandinavian Journal of Statistics
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
Vitenskapelig artikkel
-
Wu, YH;
Tjelmeland, Håkon;
West, M.
(2007)
Bayesian CART: Prior specification and posterior simulation.
Journal of Computational And Graphical Statistics (JCGS)
Vitenskapelig artikkel
2006
-
Eidsvik, Jo;
Tjelmeland, Håkon.
(2006)
On directional Metropolis-Hastings algorithms.
Statistics and computing
Vitenskapelig artikkel
2005
-
Tjelmeland, Håkon;
Eidsvik, Jo.
(2005)
Directional Metropolis-Hastings updates for posteriors with nonlinear likelihoods.
Springer Publishing Company
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
Vitenskapelig artikkel
2003
-
Tjelmeland, Håkon;
Lund, Kjetill Vassmo.
(2003)
Bayesian modelling of spatial compositional data.
Journal of Applied Statistics
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
Vitenskapelig artikkel
-
Tjelmeland, Håkon;
Hegstad, Bjørn Kåre.
(2001)
Mode jumping proposals in MCMC.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Holden, Lars;
Skare, Øivind;
Omre, Henning;
Tjelmeland, Håkon.
(2001)
Sampling algorithms for Bayesian history matching.
NR-notat (SAND/04/01)
Rapport
1998
-
Tjelmeland, Håkon;
Besag, Julian.
(1998)
Markov random fields with higher order interactions.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
1997
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
Egeland, Thore.
(1997)
Uncertainties in reservoir production forecasts.
American Association of Petroleum Geologists Bulletin
Vitenskapelig artikkel
-
Tjelmeland, Håkon;
Omre, Henning.
(1997)
A complex sand-shale facies model conditioned on observations from wells, seismics and production.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Omre, Henning;
Tjelmeland, Håkon.
(1997)
Petroleum geostatistics.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
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.
(1995)
The great reservoir uncertainty study - GRUS.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tjelmeland, Håkon;
Lia, Oddvar.
(1995)
A marked point process model in reservoir characterization.
Rapport
1994
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - Great reservoir uncertainty study. Documentation of model.
NR-notat (SAND/12/94)
Rapport
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - Great reservoir uncertainty study. Documentation of results.
NR-notat (SAND/13/94)
Rapport
-
Egeland, Thore;
Omre, Henning;
Lia, Oddvar;
Tjelmeland, Håkon;
Holden, Lars;
Andersen, Tove.
(1994)
GRUS data analysis.
NR-notat (SAND/17/94)
Rapport
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - great reservoir uncertainty study summary report.
NR-notat (SAND/11/94)
Rapport
1993
-
Storvik, Geir Olve;
Egeland, Thore;
Holden, Lars;
Tjelmeland, Håkon.
(1993)
Markov Chain simulations for analysis of marked point processes.
Report at the Norwegian Computing Center (869)
Rapport
-
Tjelmeland, Håkon;
Holden, Lars.
(1993)
Semi-markov random fields.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
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.
Rapport
-
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.
NR-notat (SAND/09/93)
Rapport
1992
-
Omre, Henning;
Tjelmeland, Håkon.
(1992)
Modeling of the Statfjord formation Statfjord field. Stochastic production evaluation - Phase III.
Rapport
-
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.
NR-notat (SAND/12/92)
Rapport
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1992)
Simulation of random functions on large lattices.
Ukjent
Vitenskapelig artikkel
1991
-
Omre, Henning;
Egeland, Thore;
Holden, Lars;
Lia, Oddvar;
Tjelmeland, Håkon;
MacDonald, Alister.
(1991)
GRUS-report: Outline of models and test plan.
NR-notat (SAND/30/91)
Rapport
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1991)
Simulation of random functions on large lattices.
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.
NR-notat (SAND/10/90)
Rapport
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
MOHERES - a program system for simulation of reservoir properties.
NR-notat (SAND/19/90)
Rapport
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
Large scale barriers in extensively drilled reservoirs.
Rapport
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
A stochastic model for shale distribution in petroleum reservoirs.
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
-
Tjelmeland, Håkon;
Omre, Henning.
(1989)
Modelling of the Statfjord formation, Statfjord field. Stochastic reservoir description. Phase II.
Rapport
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1989)
Simulation of calcite cemented barriers in the TROLL field.
Rapport
-
Omre, Henning;
Tjelmeland, Håkon.
(1989)
BARESI - BArriers in REservoirs by SImulation.
Rapport
-
Tjelmeland, Håkon;
Wang, Bo.
(1989)
Filtrering og klassifikasjon av SAR-bilder over hav-is.
Rapport
1988
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Modeling of the Statfjord formation, Statfjord field; Stochastic reservoir description, phase I.
Rapport
-
Halvorsen, Kjetil B.;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Simulating fractile characteristics of petroleum reservoirs.
Rapport
Tidsskriftspublikasjoner
-
Gryvill, Håkon;
Grana, Dario;
Tjelmeland, Håkon.
(2024)
Bayesian Ensemble Kalman Filter for Gaussian Mixture Models.
Mathematical Geosciences
Vitenskapelig artikkel
-
Gryvill, Håkon;
Tjelmeland, Håkon.
(2023)
A sparse matrix formulation of model-based ensemble Kalman filter.
Statistics and computing
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Riegler, Michael;
Tjelmeland, Håkon.
(2023)
Approximate Bayesian Inference Based on Expected Evaluation.
Bayesian Analysis
Vitenskapelig artikkel
-
Loe, Margrethe Kvale;
Tjelmeland, Håkon.
(2022)
Ensemble updating of categorical state vectors.
Computational statistics (Zeitschrift)
Vitenskapelig artikkel
-
Loe, Margrethe Kvale;
Grana, Dario;
Tjelmeland, Håkon.
(2021)
Geophysics-Based Fluid-Facies Predictions Using Ensemble Updating of Binary State Vectors.
Mathematical Geosciences
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
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
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
-
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
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
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
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
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2016)
Prior specification of neighbourhood and interaction structure in binary Markov random fields.
Statistics and computing
Vitenskapelig artikkel
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2015)
Fully Bayesian Binary Markov Random Field Models: Prior Specification and Posterior Simulation.
Scandinavian Journal of Statistics
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)
Vitenskapelig artikkel
-
Toftaker, Håkon;
Tjelmeland, Håkon.
(2013)
Construction of Binary Multi-grid Markov Random Field Prior Models from Training Images.
Mathematical Geosciences
Vitenskapelig artikkel
-
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
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)
Vitenskapelig artikkel
-
Helland, Inge Svein;
Sæbø, Solve;
Tjelmeland, Håkon.
(2012)
Near optimal prediction from relevant components.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2011)
Approximate forward–backward algorithm for a switching linear Gaussian model.
Computational Statistics & Data Analysis
Vitenskapelig artikkel
-
Pfuhl, Gerit;
Tjelmeland, Håkon;
Biegler, Robert.
(2011)
Precision and Reliability in Animal Navigation.
Bulletin of Mathematical Biology
Vitenskapelig artikkel
-
Lødøen, Ole Petter;
Tjelmeland, Håkon.
(2010)
Bayesian calibration of hydrocarbon reservoir models using an approximate reservoir simulator in the prior specification.
Statistical Modelling
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
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
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis-Hastings algorithm.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Shabalin, AA;
Tjelmeland, Håkon;
Fan, C;
Perou, CM;
Nobel, AB.
(2008)
Merging two gene-expression studies via cross-platform normalization.
Bioinformatics
Vitenskapelig artikkel
-
Rabben, Tor Erik;
Tjelmeland, Håkon;
Ursin, Bjørn.
(2008)
Non-linear Bayesian joint inversion of seismic reflection coefficients.
Geophysical Journal International
Vitenskapelig artikkel
-
Hammer, Hugo Lewi;
Tjelmeland, Håkon.
(2008)
Control variates for the Metropolis--Hastings algorithm.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
Wu, YH;
Tjelmeland, Håkon;
West, M.
(2007)
Bayesian CART: Prior specification and posterior simulation.
Journal of Computational And Graphical Statistics (JCGS)
Vitenskapelig artikkel
-
Eidsvik, Jo;
Tjelmeland, Håkon.
(2006)
On directional Metropolis-Hastings algorithms.
Statistics and computing
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
Tjelmeland, Håkon;
Lund, Kjetill Vassmo.
(2003)
Bayesian modelling of spatial compositional data.
Journal of Applied Statistics
Vitenskapelig artikkel
-
Rue, Håvard;
Tjelmeland, Håkon.
(2002)
Fitting Gaussian Markov random fields to Gaussian fields.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
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
Vitenskapelig artikkel
-
Tjelmeland, Håkon;
Hegstad, Bjørn Kåre.
(2001)
Mode jumping proposals in MCMC.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Tjelmeland, Håkon;
Besag, Julian.
(1998)
Markov random fields with higher order interactions.
Scandinavian Journal of Statistics
Vitenskapelig artikkel
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
Egeland, Thore.
(1997)
Uncertainties in reservoir production forecasts.
American Association of Petroleum Geologists Bulletin
Vitenskapelig artikkel
-
Lia, Oddvar;
Tjelmeland, Håkon;
Kjellesvik, Lars Edward.
(1996)
Modeling of facies architecture by marked point models.
Ukjent
Vitenskapelig artikkel
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1992)
Simulation of random functions on large lattices.
Ukjent
Vitenskapelig artikkel
-
Omre, Henning;
Tjelmeland, Håkon;
Qi, Yuanchang;
Hinderaker, Leif.
(1991)
Assessment of uncertainty in the production characteristics of a sandstone reservoir.
Ukjent
Vitenskapelig artikkel
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon;
Claesson, Lennart;
Holter, Cathrine.
(1990)
Calcite cementation: description and production consequences.
Ukjent
Vitenskapelig artikkel
-
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
Del av bok/rapport
-
Tjelmeland, Håkon;
Eidsvik, Jo.
(2005)
Directional Metropolis-Hastings updates for posteriors with nonlinear likelihoods.
Springer Publishing Company
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tjelmeland, Håkon;
Omre, Henning.
(1997)
A complex sand-shale facies model conditioned on observations from wells, seismics and production.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Omre, Henning;
Tjelmeland, Håkon.
(1997)
Petroleum geostatistics.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
Egeland, Thore;
Andersen, Tove.
(1995)
The great reservoir uncertainty study - GRUS.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tjelmeland, Håkon;
Holden, Lars.
(1993)
Semi-markov random fields.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Rapport
-
Arnesen, Petter;
Tjelmeland, Håkon.
(2015)
Prior construction for discrete Markov models.
Skipnes kommunikasjon as
Doktorgradsavhandling
-
Martinelli, Gabriele;
Eidsvik, Jo;
Hauge, Ragnar;
Tjelmeland, Håkon.
(2012)
Petroleum exploration with Bayesian Networks - From prospect risk assessment to optimal exploration.
Doktoravhandlinger ved NTNU (2012:273)
Doktorgradsavhandling
-
Holden, Lars;
Skare, Øivind;
Omre, Henning;
Tjelmeland, Håkon.
(2001)
Sampling algorithms for Bayesian history matching.
NR-notat (SAND/04/01)
Rapport
-
Tjelmeland, Håkon;
Lia, Oddvar.
(1995)
A marked point process model in reservoir characterization.
Rapport
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - Great reservoir uncertainty study. Documentation of model.
NR-notat (SAND/12/94)
Rapport
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - Great reservoir uncertainty study. Documentation of results.
NR-notat (SAND/13/94)
Rapport
-
Egeland, Thore;
Omre, Henning;
Lia, Oddvar;
Tjelmeland, Håkon;
Holden, Lars;
Andersen, Tove.
(1994)
GRUS data analysis.
NR-notat (SAND/17/94)
Rapport
-
Lia, Oddvar;
Omre, Henning;
Tjelmeland, Håkon;
Holden, Lars;
MacDonald, Alister;
Hustad, Odd Steve.
(1994)
GRUS - great reservoir uncertainty study summary report.
NR-notat (SAND/11/94)
Rapport
-
Storvik, Geir Olve;
Egeland, Thore;
Holden, Lars;
Tjelmeland, Håkon.
(1993)
Markov Chain simulations for analysis of marked point processes.
Report at the Norwegian Computing Center (869)
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.
Rapport
-
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.
NR-notat (SAND/09/93)
Rapport
-
Omre, Henning;
Tjelmeland, Håkon.
(1992)
Modeling of the Statfjord formation Statfjord field. Stochastic production evaluation - Phase III.
Rapport
-
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.
NR-notat (SAND/12/92)
Rapport
-
Omre, Henning;
Egeland, Thore;
Holden, Lars;
Lia, Oddvar;
Tjelmeland, Håkon;
MacDonald, Alister.
(1991)
GRUS-report: Outline of models and test plan.
NR-notat (SAND/30/91)
Rapport
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1991)
Simulation of random functions on large lattices.
Rapport
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
A program system for simulation of reservoir architecture and reservoir properties.
NR-notat (SAND/10/90)
Rapport
-
Holden, Lars;
Tjelmeland, Håkon.
(1990)
MOHERES - a program system for simulation of reservoir properties.
NR-notat (SAND/19/90)
Rapport
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
Large scale barriers in extensively drilled reservoirs.
Rapport
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1990)
A stochastic model for shale distribution in petroleum reservoirs.
Rapport
-
Tjelmeland, Håkon;
Omre, Henning.
(1989)
Modelling of the Statfjord formation, Statfjord field. Stochastic reservoir description. Phase II.
Rapport
-
Omre, Henning;
Sølna, Knut;
Tjelmeland, Håkon.
(1989)
Simulation of calcite cemented barriers in the TROLL field.
Rapport
-
Omre, Henning;
Tjelmeland, Håkon.
(1989)
BARESI - BArriers in REservoirs by SImulation.
Rapport
-
Tjelmeland, Håkon;
Wang, Bo.
(1989)
Filtrering og klassifikasjon av SAR-bilder over hav-is.
Rapport
-
Høiberg, Jan;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Modeling of the Statfjord formation, Statfjord field; Stochastic reservoir description, phase I.
Rapport
-
Halvorsen, Kjetil B.;
Omre, Henning;
Tjelmeland, Håkon.
(1988)
Simulating fractile characteristics of petroleum reservoirs.
Rapport
Undervisning
Emner
Formidling
2024
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Vitenskapelig foredragGryvill, Håkon; Tjelmeland, Håkon. (2024) Ensemble Kalman filter with sparse precision matrices. GAMES GAMES meeting , Trondheim 2024-05-06 - 2024-05-07
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Vitenskapelig foredragTjelmeland, Håkon. (2024) Bayesian wavelet estimation from seismic volumes and well data. Geostats 2024 Geostats 2024 , Ponta Delgada, Azores, Portugal 2024-09-02 - 2024-09-06
2023
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Vitenskapelig foredragGryvill, Håkon; Tjelmeland, Håkon. (2023) A sparse matrix formulation of model-based ensemble Kalman filter. EAGE Petroleum Geostatistics 2023 , Porto, Portugal 2023-11-27 - 2023-11-30
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Vitenskapelig foredragGryvill, Håkon; Tjelmeland, Håkon. (2023) A sparse matrix formulation of the model-based ensemble Kalman filter. Chalmers University Nordstat 2023 , Gothenburg 2023-06-19 - 2023-06-22
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Vitenskapelig foredragGryvill, Håkon; Grana, Dario; Tjelmeland, Håkon. (2023) An ensemble Kalman filter for a combined model of categorical and continuous variables. GAMES GAMES meeting , Trondheim 2023-05-08 - 2023-05-09
2022
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Vitenskapelig foredragGryvill, Håkon; Tjelmeland, Håkon. (2022) A sparse matrix formulation of the model-based ensemble Kalman filter. GAMES GAMES meeting , Trondheim 2022-05-09 - 2022-05-10
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Vitenskapelig foredragGryvill, Håkon; Tjelmeland, Håkon. (2022) A sparse matrix formulation of the model-based ensemble Kalman filter. NORCE EnKF workshop , Balestrand 2022-05-30 - 2022-06-02
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Vitenskapelig foredragTjelmeland, Håkon; Gryvill, Håkon; Loe, Margrethe Kvale. (2022) Model-based ensemble Kalman filter. International Association for Mathematical Geosciences 21st Annual Conference of the International Association for Mathematical Geosciences , Nancy 2022-08-30 - 2022-09-03
2021
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Vitenskapelig foredragTjelmeland, Håkon; Loe, Margrethe Kvale. (2021) A generalisation of the updating step i EnKF. NORCE 2021 EnKF Workshop , Digitalt 2021-06-07 - 2021-06-11
2020
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Vitenskapelig foredragPfuhl, Gerit; Tjelmeland, Håkon. (2020) Who's more Bayesian? Belief updating and no conservatism bias in Schizophrenia. Mathematical Psychology Association The 53rd Annual Meeting of the Society for Mathematical Psychology (MathPsych2020) , virtual (Toronto) 2020-07-20 - 2020-08-01
2019
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Vitenskapelig foredragLoe, Margrethe Kvale; Tjelmeland, Håkon. (2019) Ensemble Updating of Binary State Vectors by Maximising the Expected Number of Unchanged Components. EAGE Petroleum Geostatistics 2019 , Firenze 2019-09-02 - 2019-09-06
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Vitenskapelig foredragTjelmeland, Håkon; Luo, Xin; Fjeldstad, Torstein Mæland. (2019) A Flexible Markov Mesh Prior for Lithology/fluid Class Prediction. EAGE Petroleum Geostatistics 2019 , 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. CCN Computational and cognitive neuroscience conference , Berlin 2019-09-13 - 2019-09-16
2018
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PosterPfuhl, Gerit; Tjelmeland, Håkon. (2018) On probability estimates and who is more aberrant - patients with Schizophrenia or Healthy Controls?. Lundbeckfond Brain Prize conference Neuroscience of Prediction , 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. Norwegian Research School in Neuroscience 5th National PhD Conference 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
-
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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Vitenskapelig foredragTjelmeland, 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
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Vitenskapelig foredragHåkon, 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
2011
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Vitenskapelig foredragTjelmeland, Håkon. (2011) An approximate forward-backward algorithm. Statistical Mechanics of Inference , Trondheim 2011-09-05 - 2011-09-08
2010
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Vitenskapelig foredragHelland, 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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Vitenskapelig foredragSæbø, 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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Vitenskapelig foredragRabben, Tor Erik; Tjelmeland, Håkon; Ursin, Bjørn. (2007) Nonlinear Bayesian joint inversion of seismic reflection coefficients. EAGE Petroleum Geostatistics 2007, Cascais, Portugal , Cascais 2007-09-10 - 2007-09-14
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Vitenskapelig foredragLødøen, Ole Petter; Tjelmeland, Håkon. (2007) Bayesian calibration of reservoir models using a coarse-scale reservoir simulator in the prior specification. EAGE, European Association of Geoscientists and Engineers Petroleum Geostatistics , Cascais 2007-09-10 - 2007-09-14
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Vitenskapelig foredragHammer, Hugo Lewi; Tjelmeland, Håkon. (2007) Lithology/Fluid Prediction by Simulating from the Posterior of a Markov Chain Prior Bayesian Model. EAGE, European Association of Geoscientists and Engineers Petroleum Geostatistics , Cascais 2007-09-10 - 2007-09-14
2006
-
Vitenskapelig foredragTjelmeland, Håkon. (2006) A Bayesian Model for Cross-Study Differential Gene Expression. Inst. of statistics and decision sciences, Duke university seminar , Durham, North Carolina 2006-12-08 -
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Vitenskapelig foredragEftedal, Olav Sande; Tjelmeland, Håkon; Brubakk, Alf O. (2006) Bubble detection and Bayesian statistics for validation of decompression tables. European Underwater and Baromedical Society 32nd Annual Meeting of the EUBS, Bergen, Norway, August 23.-26., 2006 , Bergen 2006-08-23 - 2006-08-26
2003
-
Vitenskapelig foredragTjelmeland, Håkon. (2003) Directional Metropolis-Hastings algorithms. Department of Statistics and Operations Research, The University of North Carolina at Chapell Hill , North Carolina, USA 2003-11-10 -
-
Vitenskapelig foredragTjelmeland, Håkon. (2003) Fitting Gaussian Markov random fields to Gaussian fields. Institute of Statistics and Decision Sciences, Duke University , North Carolina, USA 2003-10-03 -
2001
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Vitenskapelig foredragTjelmeland, Håkon. (2001) Fitting Gaussian Markov random fields to Gaussian fields. The 53rd Session of the International Statistical Institute , Seoul, 22-29 August 2001
1999
-
Vitenskapelig foredragTjelmeland, Håkon; Hegstad, Bjørn Kåre. (1999) Mode jumping proposals in MCMC. Second European Conference on Highly Structured Stochastic Syst ems , Pavia, Italia
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Vitenskapelig foredragTjelmeland, 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 , Luminy, Frankrike
1998
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Populærvitenskapelig foredragTjelmeland, 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]
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Populærvitenskapelig foredragTjelmeland, Håkon; Hegstad, Bjørn Kåre. (1998) Conditioning on dynamic data in a Bayesian framework. FORCE-seminar: Conditioning of Reservoir Models to Dynamic Data , [Mangler data]
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Populærvitenskapelig foredragTjelmeland, Håkon. (1998) The Bayesian framework for knowledge and data integration. 3rd Norwegian Heterogeneity Conference , Gardermoen
1997
-
Vitenskapelig foredragTjelmeland, 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]
1996
-
Vitenskapelig foredragTjelmeland, Håkon. (1996) Modeling of the spatial facies distribution by Markov random fields. The Fifth International Geostatistical Congress , [Mangler data]
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Vitenskapelig foredragLia, Oddvar; Tjelmeland, Håkon; Kjellesvik, Lars Edward. (1996) Modelling of facies architecture by marked point models. The Fifth International Geostatistical Congress , Wollongong 1996-09-22 - 1996-09-27
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Vitenskapelig foredragKjellesvik, 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 -
1992
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Vitenskapelig foredragHolden, Lars; Omre, Henning; Tjelmeland, Håkon. (1992) Integrated Reservoir Description, SPE 24261-MS. Society of Petroleum Engineers 1992 European Petroleum Computer Conference , Stavanger 1992-05-24 - 1992-05-27
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Vitenskapelig foredragTyler, Kelly; Georgsen, Frode; Henriquez, Adolfo; Holden, Lars; Tjelmeland, Håkon. (1992) A program for 3-D modelling of heterogeneities in a fluvial reservoir. Delft University of Technology Third European Conference on the Mathematics of Oil Recovery , Delft 1992-06-17 -
1991
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Vitenskapelig foredragTjelmeland, Håkon. (1991) Simulering av kontinuerlige stokastiske felt. Geomøte -91, Oljedirektoratet. Stavanger 1991-02-14 -