Browsing NTNU Open by Author "Tjelmeland, Håkon"
Now showing items 41-54 of 54
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Probabilistic inference in psychosis and autism
Kreis, Isabel Viola; Sandvik, Kristin; Tjelmeland, Håkon; Biegler, Robert; Pfuhl, Gerit (Lecture, 2017) -
Psychosis and Psychotic-Like Symptoms Affect Cognitive Abilities but Not Motivation in a Foraging Task
ten Velden Hegelstad, Wenche; Kreis, Isabel Viola; Tjelmeland, Håkon; Pfuhl, Gerit (Peer reviewed; Journal article, 2020)Background and Objective: Goal-directed behavior is a central feature of human functioning. It requires goal appraisal and implicit cost-benefit analyses, i.e., how much effort to invest in the pursuit of a certain goal, ... -
Quantification of an Approximate forward-backward Algorithm applied to a Convolutional Model
Lorentsen, Trine-Lise P (Master thesis, 2014)In this master thesis an approximated forward-backward algorithm for binary Markov random fields is applied to and evaluated for a convolutional Bayesian model. The Bayesian model is transformed into its unique corresponding ... -
Rekursiv blokkoppdatering av Isingmodellen
Sæther, Bjarne (Master thesis, 2006)I denne rapporten sammenligner vi tre varianter av Markov Chain Monte Carlo (MCMC) - simulering av Isingmodellen. Vi sammenligner enkeltnode-oppdatering, naiv blokkoppdatering og rekursiv blokkoppdatering. Vi begynner med ... -
Sequential Markov random fields and Markov mesh random fields for modelling of geological structures
Stien, Marita (Master thesis, 2006)We have been given a two-dimensional image of a geological structure. This structure is used to construct a three-dimensional statistical model, to be used as prior knowledge in the analysis of seismic data. We consider ... -
Sequential Markov random fields and Markov mesh random fields for modelling of geological structures
Stien, Marita (Master thesis, 2006)We have been given a two-dimensional image of a geological structure. This structure is used to construct a three-dimensional statistical model, to be used as prior knowledge in the analysis of seismic data. We consider ... -
Simulation from doubly-intractable distributions without perfect sampling
Loe, Margrethe Kvale (Master thesis, 2015)In this thesis, we propose an exact auxiliary variable MCMC algorithm for doubly-intractable distributions. Such distributions arise in Bayesian inference when the likelihood has an intractable normalising constant which ... -
A sparse matrix formulation of model-based ensemble Kalman filter
Gryvill, Håkon; Tjelmeland, Håkon (Peer reviewed; Journal article, 2023)We introduce a computationally efficient variant of the model-based ensemble Kalman filter (EnKF). We propose two changes to the original formulation. First, we phrase the setup in terms of precision matrices instead of ... -
Statistical analysis and modeling of decision-making among individuals with autistic and psychotic traits in the bunny task.
Steen, Erling Fause (Master thesis, 2023)Denne masteroppgaven undersøker tilbøyeligheten til å rapportere endringer blant individer med autistiske trekk, psykotiske trekk, eller begge deler. Studien undersøker om disse individene har en tendens til å rapportere ... -
Statistical Models for the Beads Task Problem in Psychiatry
Christensen, Benedicte Meløy (Master thesis, 2016)The tendency to "jump to conclusion" and make decisions on basis of little evidence has been linked with being prone to delusions. This behavior is particularly seen in the "beads task", where participant are presented ... -
Statistisk modellering av data for hukommelse hos kaier
Mjånes, Jakob (Master thesis, 2010)Hukommelsen til fuglearten kaier er undersøkt ved modellering og analysering av tilgjengelige data. To fugler har gjennomført en mengde med tester etter en periode med opptrening. Robert Biegler og Gerit Pfuhl stod for ... -
Stochastic modelling and prediction of call data from TrønderTaxi.
Østhus, Tormod (Master thesis, 2016)In this report we examine a data set from TrønderTaxi, which contains information about all phone calls their call center received from 1 March 2014 to 31 January 2016. We model the number of phone calls received per 30 ... -
The Error-State Kalman Filter for Singularity-Free State Estimation in Inertial Navigation Systems
Fagerli, Anders Thallaug; Severinsen, Odin Aleksander (Bachelor thesis, 2020)Fremskritt innen moderne robotikk har de siste årene gitt opphav til mange bruksområder innen estimering for autonome systemer. Denne avhandlingen gir et statistisk rammeverk for estimering av posisjon, hastighet og ... -
The Error-State Kalman Filter for Singularity-Free State Estimation in Inertial Navigation Systems
Fagerli, Anders Thallaug; Severinsen, Odin Aleksander (Bachelor thesis, 2020)Fremskritt innen moderne robotikk har de siste årene gitt opphav til mange bruksområder innen estimering for autonome systemer. Denne avhandlingen gir et statistisk rammeverk for estimering av posisjon, hastighet og ...