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(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
We study sequences of independent observations and test whether the observations stem from the same underlying probability distribution. We focus on being able to detect a potential sudden change in the parameters of the ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
The goal of this thesis is to introduce polynomial processes and to present some of the most important findings and applications in a clear and pedagogical way. A polynomial process is a particular type of Markov process. ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Statistical boosting is a powerful tool that has become increasingly more popular in recent years. It works very well in the high-dimensional data setting, and it has many beneficial properties, e.g., shrinkage, automated ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
There is a hypothesis among epidemiologists that presence of bacteria in the blood, or bacteraemia, is a risk factor for serious health conditions such as cardiovascular disease. Combine this with the fact that cardiovascular ...
(Master thesis / Masteroppgave, 2020)
This thesis is concerned with rationality questions of algebraic varieties, specifically questions regarding stable rationality over the complex numbers. We use the techniques related to the motivic volume introduced by ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Utgangspunktet var å bruke uføremodellering fra historisk data fra SpareBank 1 sitt livsforsikringsselskap og knytte dette til sosioøkonomiske forklaringsvariabler. Hovedmålet var å komme frem til en modell som kunne brukes ...
(Master thesis / Masteroppgave, 2020)
In nested case-control and case-cohort studies of time-to-events, covariate information is collected for all individuals in the sampled cohort. Often information on some of the covariates are easily available for the entire ...
(Master thesis / Masteroppgave, 2020)
\textit{Isogeny graphs} are a type of graphs, where the vertices represent elliptic curves and the edges represent isogenies. I will examine some of the structures of these graphs in this thesis. It turns out that the ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Hoftebrudd innebærer brudd i lårhalsen eller i området ved den lille og store lårbensknuten. Vi vet at 70% av individer med hoftebrudd er kvinner og også at 70% av disse individene er over 70 år. I denne oppgaven er vi ...
(Master thesis / Masteroppgave, 2020)
Detecting fraud is a problem characterized by class-imbalance. The events of interest, the true fraudulent cases, are outnumbered by the legitimate ones. Rare outcomes are hard to predict accurately, and standard classifiers, ...
(Master thesis / Masteroppgave, 2020)
Emnet for denne oppgaven er stokastiske kontrollproblemer, der formålet er å se på de økonomiske utfordringene ved irreversible investeringer i et fluktuerende marked. T.Ø. Kobila har tidligere utviklet en kontinuerlig ...
(Master thesis / Masteroppgave, 2020)
Making the most of data in dairy farming research-how twenty-first century statistical learning methods can contribute Restricted Access
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Bølge responsen til en 2d elastisk plate har blitt mod- ellert som et flytende solcellepanel og studert under påvirkn- ing av periodiske overflate vannsbølger. Modellen anal- yseres med lineær bølge teori og hydrodynamikk. ...
(Master thesis / Masteroppgave, 2020)
The aim of this thesis is twofold. First we introduce a Hilbert-valued multi-market two-factor forward curve model satisfying the Heath-Jarrow-Morton equation. Each forward curve consist of a shared source of noise and a ...
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Fairness is an inherently important aspect of decision-making in general, and with automated algorithms increasingly making decisions impacting our lives it is of paramount importance that the decisions they make be fair ...
Scalable Markov Chain Monte Carlo by subsampling methods Restricted Access
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
The main aim of the thesis is to study attractors for certain iterated function systems arising from quantum channels on finite dimensional C*-algebras. I will show the existence of attractors on the density operators by ...
(Master thesis / Masteroppgave, 2020)
Seifert manifolds play a crucial role in the classification of 3-manifolds, as they occupy six of the eight geometries proposed by Thurston. In this thesis we determine which Seifert manifolds can be given a smooth action ...
Can everything be learned? Recovery of highly sparse images using deep neural networks. Restricted Access
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Lately, there has been a lot of research on using deep learning as an alternative method to solve PDEs. The major benefit is being able to solve in higher dimensions without using a full grid of mesh points. Here we try ...
Option Pricing with Neural Networks Restricted Access
(Master thesis / Masteroppgave, 2020)
(Master thesis / Masteroppgave, 2020)
Several examples of use of four importance measures for repairable multistate systems. The measures are based on the classical Birnbaum reliability importance measure, and can be characterised with respect to two features. ...
(Master thesis / Masteroppgave, 2020)
We show how both Poisson regression and recurrent events models can be used to model the number of claims to expect on a car insurance policy. We also show that the same is true when these models are extended to include a ...
(Master thesis / Masteroppgave, 2020)
The topic of this thesis is stochastic optimal control and reinforcement learning. Our aim is to unify the theory and language used in the two fields. The thesis presents both frameworks and discuss similarities, differences ...
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
In this thesis we reproduce the results of Laca and Neshveyev for characterizing certain KMS states on Pimsner algebras. Before getting there, we build up the necessary theory using various sources, giving detailed proofs ...
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
As an employee you can have a variety of insurances through your employer, one of them being life insurance covering death due to non-occupational illnesses. With such covers it is essential for the insurance company to ...
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
Over the past decade, compressive sensing and deep learning have emerged as viable techniques for reconstruction of images using far fewer samples than what Shannon's sampling theory dictates. The two methods are fundamentally ...
(Master thesis / Masteroppgave, 2019)
Recovering signals from undersampled measurements is a well-studied topic in mathematics. During the last decade, many attempts have been made to solve this problem using machine learning, with resulting reconstruction ...
Mekanismer for strømseparasjon og vertikalstrøm av partikler bak sterke indre bølger Restricted Access
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
In this thesis, we study different methods of likelihood estimation in a Cox proportional hazards model in a nested case-control study. To be more specific, how they deal with the problem of overmatching. This problem has ...
(Master thesis / Masteroppgave, 2019)
An extended LIBOR forward rate model is derived through what we call the HJM-Lévy framework. The resulting model is a geometric Itô-Lévy process, of which the well known geometric Brownian motion with deterministic volatility ...
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
Havis dekker store havområder både nord og sør på jordkloden. Med minkende isdekke i Arktis er det viktig å tilegne seg kunnskap om hvordan havet og isen påvirker hverandre. I denne oppgaven blir bølgepropagasjon i åpent ...
(Master thesis / Masteroppgave, 2019)
We study how one can improve upon a logistic regression model for statistical fraud detection. Fraud data are often characterized by uneven class distributions as well as high dependence among covariates. With a focus on ...
(Master thesis / Masteroppgave, 2019)
Denne oppgaven tar for seg projeksjoner på vegger. Når man projiserer et bilde på en vegg, ønsker man at det ikke skal bli fordreid. Vi vil ta for oss hvordan punkter, linjer og flater blir projisert, og viser at avbildningene ...
(Master thesis / Masteroppgave, 2019)
The purpose of this thesis is to look at certain abelian groups and their reduced twisted group C*-algebras. We consider a class of quantum channels on these algebras, associated with normalised positive definite functions, ...
Krylovmetodar for strukturerte lineære system Restricted Access
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
Life expectancies at birth are usually computed from period life tables, i.e. on the basis of mortality in a particular calendar year. Over the last century, there has been a worldwide decline in mortality rates at most ...
(Master thesis / Masteroppgave, 2019)
Conventional differential gene expression analysis by methods such as SAM (Chu et al., 2001), student’s t-test and Empirical Bayes (Efron et al., 2001) often searches for statistically significant genes without considering ...
(Master thesis / Masteroppgave, 2019)
Datamaskinen har i det siste århundret drastisk endret måten vi forholder oss til matematiske og naturvitenskapelige problemer, da en datamaskin har en beregningskapasitet som vi før bare kunne drømme om. Som en følge av ...
(Master thesis / Masteroppgave, 2019)
Certain polyhedral fans can be constructed from matroids, and these serve as the local model of tropical manifolds. Such matroidal fans satisfy a tropical version of Poincaré duality [JRS17]. In this thesis, we give ...
(Master thesis / Masteroppgave, 2019)
Vi ser på Schoof's og Satoh's algoritmer for opptelling av rasjonale punkter på elliptiske kurver over endelige kropper. Relevant bakgrunn om elliptiske kurver og de p-adiske tallene. Kort om ECC (elliptic curve cryptography). ...
(Master thesis / Masteroppgave, 2019)
Denne oppgaven har som mål å drøfte ikke-standard analyse som et alternative til tradisjonell undervisning i kalkulus på videregående skole og begynnende universitet. For å kunne drøfte denne problemstillingen, vil oppgaven ...
(Master thesis / Masteroppgave, 2019)
In this thesis, results from numerical simulations and experiments on drops squeezing through constricted capillaries are presented. The purpose is to understand how the capillary number changes how drops are deformed as ...
(Master thesis / Masteroppgave, 2019)
Irregular wavefield propagating from open water into water covered by an elastic sheet.
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
(Master thesis / Masteroppgave, 2019)
A statistical analysis of goalkeepers in the Norwegian topp division for the seasons 2015 and 2016.
(Master thesis / Masteroppgave, 2019)
The main objective of this thesis is to analyze the demographics of NRK’s digital logged-in users, for which consumption behaviour data is also available. In particular, we examine NRK’s reach across demographic groups by ...
Optimal reinsurance - an examination of optimal stop-loss contracts for different lines of business Restricted Access
(Master thesis / Masteroppgave, 2018)
Reinsurance is a risk management tool for insurance companies, as it allows for transferring some of the insurance risk to reinsurance companies. From the insurer's perspective, a reinsurance contract may lead to more ...
(Master thesis / Masteroppgave, 2018)
Metoder og metodiske utfordringer for matchede kohortstudier Restricted Access
(Master thesis / Masteroppgave, 2018)
Når man estimerer effekten av en bestemt behandling eller eksponering på utfall i kohortstudier, og observasjonsstudier generelt, gir ikke standard metoder korrekte resultater i nærvær av ukontrollert konfundering. Matching ...
(Master thesis / Masteroppgave, 2018)
The objective of this thesis is to give a description of the rough stochastic volatility modelling based on fractional Brownian motion with Hurst exponent H less than 1/2, as well as the corresponding pricing model. ...
Approximations of Fractional Brownian Motion Restricted Access
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
Longitudinal data arise when repeated measurements are taken on individuals over time. Commonly used models for such data are multivariate linear models, linear mixed effect models and generalised linear mixed models. This ...
Reserve modelling in the presence of extreme insurance losses Restricted Access
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
This thesis investigates cubic hypersurfaces and their Fano schemes. After introducing the Fano schemes through low-dimensional examples, we move on to investigate cubic fourfolds. For the cubic fourfolds, we give complete ...
(Master thesis / Masteroppgave, 2018)
Recommender systems are algorithms that suggest content or products to users on the internet. These are becoming ever more important due to the massive growth of content on popular web sites, yet their design is often only ...
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
(Master thesis / Masteroppgave, 2018)
Applying the computational fluid dynamics software openFoam, we study dead water resistance on a barge. Dead water resistance is the extra drag due to internal waves in the interface between salt water and fresh water. For ...
(Master thesis / Masteroppgave, 2018)
In this thesis, we consider the mod 2 homology of Q≥0S0 as an E∞ space and show the following. The homologies H*Q≥0S0 and H*C∞S0 are isomorphic as free commutative /2-algebras. The homology H*Q≥0S0 is generated as an ...
(Master thesis / Masteroppgave, 2018)
Modeling of the blood flow in and around aneurysms with computational fluid dynamics (CFD) is important to better understand why aneurysms form and rupture. CFD modeling requires an accurate representation of the ...
(Master thesis / Masteroppgave, 2018)
Ventricular fibrillation (VF) occurs in ~10 % of myocardial infarction (MI) patients. These patients have higher in-hospital mortality and increased risk to lethal arrhythmias. The susceptibility for VF during acute MI and ...
(Master thesis / Masteroppgave, 2018)
Regression analysis is a commonly used approach to modelling the relationships between dependent and independent variables. When estimating the coefficients of a regression model, the least squares estimator is often used, ...
(Master thesis / Masteroppgave, 2018)
In this thesis we begin by looking at polynomials of m n x n matrices invariant under simultaneous conjugation. Thereafter we connect the invariant polynomials to simple representations of noncommutative plane curves, ...
(Master thesis / Masteroppgave, 2018)
The bidomain and monodomain models describing cardiac electrophysiology are computationally demanding to solve. Employing efficient numerical methods is therefore important for the practical use of these models. In this ...
(Master thesis / Masteroppgave, 2018)
The field of compressive sensing is a modern field in applied mathematics which receives a lot of attention. In this thesis, we will give some insight into the iterative algorithms used in compressive sensing. We will study ...
(Master thesis / Masteroppgave, 2018)