Browsing Brage NMBU by Author "Indahl, Ulf Geir"
Now showing items 1-20 of 33
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A model to secure a stable iodine concentration in milk
Trøan, Gisken; Dahl, Lisbeth; Meltzer, Helle Margrete; Abel, Marianne Hope; Indahl, Ulf Geir; Haug, Anna; Prestløkken, Egil (Journal article; Peer reviewed, 2015) -
A similarity index for comparing coupled matrices
Indahl, Ulf Geir; Næs, Tormod; Liland, Kristian Hovde (Journal article; Peer reviewed, 2018) -
Anvendelser av Tikhonov-regularisering på regresjon og klassifikasjon med rask «leave one out» kryssvalidering
Ansnes, Martin Seland (Master thesis, 2016-08-29)I denne oppgaven har jeg sett på Tikhonov-regulasisering av regresjons- og klassifikasjonsproblemer og sammeliknet egne og veileders Matlab-script med andre regresjonsog klassifikasjonsmetoder med hensyn på tidsbruk og ... -
Assessment of machine learning methods for automatic tumor segmentation
Grøndahl, Aurora Rosvoll (PhD Thesis;2023:12, Doctoral thesis, 2023)The definition of target volumes and organs at risk (OARs) is a critical part of radiotherapy planning. In routine practice, this is typically done manually by clinical experts who contour the structures in medical images ... -
Baseline and interferent correction by the Tikhonov regularization framework for linear least squares modeling
Skogholt, Joakim; Liland, Kristian Hovde; Indahl, Ulf Geir (Journal article; Peer reviewed, 2018) -
Baseline and interferent correction by the Tikhonov regularization framework for linear least squares modeling
Skogholt, Joakim; Liland, Kristian Hovde; Indahl, Ulf Geir (Journal article; Peer reviewed, 2018) -
Can Tabular Generative Models generate realistic synthetic Near Infrared spectroscopic data?
Finnøy, Isak (Master thesis, 2023)In this thesis, we evaluated the performance of two generative models, Conditional Tabular Generative Adversarial Network (CTGAN) and Tabular Variational Autoencoder (TVAE), from the open-source library Synthetic Data Vault ... -
A classroom study : students’ creative collaborative mathematical reasoning and teacher actions : design principles for learning of and through CCMR competency
Hansen, Ellen Kristine Solbrekke (PhD Thesis;2022:56, Doctoral thesis, 2022)This design-based research study presents results based on observations and analysis of student–student and student–teacher interactions in a Norwegian upper secondary school. The aim of this study was to examine student ... -
Data- and expert-driven feature selection for predictive models in healthcare : towards increased interpretability in underdetermined machine learning problems
Jenul, Anna Selina (PhD Thesis;2023:34, Doctoral thesis, 2023)Modern data acquisition techniques in healthcare generate large collections of data from multiple sources, such as novel diagnosis and treatment methodologies. Some concrete examples are electronic healthcare record systems, ... -
Daylength influences the response of three clover species (Trifolium spp.) to short-term ozone stress
Futsæther, Cecilia Marie; Vollsnes, Ane Victoria; Kruse, Ole Mathis Opstad; Indahl, Ulf Geir; Kvaal, Knut; Eriksen, Aud Else Berglen (Journal article; Peer reviewed, 2014)Long photoperiods characteristic of summers at high latitudes can increase ozone-induced foliar injury in subterranean clover (Trifolium subterraneum) This study compared the effects of long photoperiods on ozone injury ... -
Deriving Animal Movement Behaviors Using Movement Parameters Extracted from Location Data
Teimouri, Maryam; Indahl, Ulf Geir; Sickel, Hanne; Tveite, Håvard (Journal article; Peer reviewed, 2018) -
Determining the origin of impulsive noise events using wireless sound sensors
Nemazi, Fabian (Master thesis, 2021)Environmental noise is a serious and growing pollution problem, with over 100 million people affected in Europe just by road traffic. Measuring and monitoring noise using a wireless sensor network is therefore getting ... -
Efficient model selection in the Tikhonov Regularization framework and pre-processing of spectroscopic data
Skogholt, Joakim (PhD Thesis;2019:99, Doctoral thesis, 2019)Machine learning is a hot topic in today's society. Data sets of varying sizes show up in a number of contexts, and learning from data sets is important for answering many questions. There is a plethora of methods that can ... -
Exploring the possibilities of obtaining CNN-quality classification models without using convolutional neural networks
Arfan, Amir Inaamullah (Master thesis, 2022)In this thesis, we pursue the success of Convolutional Neural Networks for image classification tasks. We explore the possibilities of achieving state-of-the-art performance without explicitly using CNNs on 2D grayscale ... -
Exploring the transition from traditional data analysis to machine- and deep learning approaches
Helin, Runar (PhD Thesis;2023:47, Doctoral thesis, 2023)Data analysis methods based on machine- and deep learning approaches are continuously replacing traditional methods. Models based on deep learning (DL) are applicable to many problems and often have better prediction ... -
Extracting movement patterns from geographical trajectory data
Maryam, Teimouri (PhD Thesis;2018:96, Doctoral thesis, 2018)Thanks to the recent advent of inexpensive positioning technologies, data about movement of various mobile objects are collected in rapidly growing amounts. Massive repositories of movement data require developing new data ... -
Fast and stable partial least squares modelling: A benchmark study with theoretical comments
Björck, Åke; Indahl, Ulf Geir (Journal article; Peer reviewed, 2017) -
Hierarchical multivariate regression-based sensitivity analysis reveals complex parameter interaction patterns in dynamic models
Tøndel, Kristin; Vik, Jon Olav; Martens, Harald; Indahl, Ulf Geir; Smith, Nic; Omholt, Stig W (Journal article; Peer reviewed, 2013) -
Land cover segmentation of airborne LiDAR data using stochastic atrous network
Arief, Hasan Asyari; Strand, Geir-Harald; Tveite, Håvard; Indahl, Ulf Geir (Journal article; Peer reviewed, 2018)Inspired by the success of deep learning techniques in dense-label prediction and the increasing availability of high precision airborne light detection and ranging (LiDAR) data, we present a research process that compares ... -
Large-scale genomic prediction using singular value decomposition of the genotype matrix
Ødegård, Jørgen; Indahl, Ulf Geir; Stranden, Ismo; Meuwissen, Theodorus (Journal article; Peer reviewed, 2018)