User profiles for T. Kristjánsson

Trausti T Kristjansson

- Verified email at amazon.com - Cited by 6798

Tómas Kristjánsson

- Verified email at kms.is - Cited by 234

[HTML][HTML] Construction of relatedness matrices using genotyping-by-sequencing data

…, RM Anderson, TC van Stijn, T Kristjánsson… - BMC genomics, 2015 - Springer
Background Genotyping-by-sequencing (GBS) is becoming an attractive alternative to array-based
methods for genotyping individuals for a large number of single nucleotide …

[HTML][HTML] Spread of SARS-CoV-2 in the Icelandic population

…, KS Josefsdottir, T Kristjansson… - … England Journal of …, 2020 - Mass Medical Soc
Background During the current worldwide pandemic, coronavirus disease 2019 (Covid-19)
was first diagnosed in Iceland at the end of February. However, data are limited on how …

[HTML][HTML] Humoral immune response to SARS-CoV-2 in Iceland

…, A Jonasdottir, H Jonsson, T Kristjansson… - … England Journal of …, 2020 - Mass Medical Soc
Background Little is known about the nature and durability of the humoral immune response
to infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Methods …

[PDF][PDF] HMM adaptation using vector taylor series for noisy speech recognition.

A Acero, L Deng, TT Kristjansson, J Zhang - INTERSPEECH, 2000 - academia.edu
In this paper we address the problem of robustness of speech recognition systems in noisy
environments. The goal is to estimate the parameters of a HMM that is matched to a noisy …

Dynamics of visual attention revealed in foraging tasks

T Kristjánsson, IM Thornton, A Chetverikov… - Cognition, 2020 - Elsevier
Visual search tasks play a key role in theories of visual attention. But single-target search
tasks may provide only a snapshot of attentional orienting. Foraging tasks with multiple targets …

Technical efficiency of African catfish production in Nigeria: an analysis involving input quality and COVID-19 effects

…, T Kristjánsson, T Tómasson - Aquaculture …, 2023 - Taylor & Francis
T E i is the relative technical efficiency of the ith firm which lies between zero and unity, ie
[0 < TE < 1]. A T E i equal to 1 implies a fully efficient farm. Since the coefficients ( β …

Foraging through multiple target categories reveals the flexibility of visual working memory

T Kristjánsson, Á Kristjánsson - Acta Psychologica, 2018 - Elsevier
A key assumption in the literature on visual attention is that templates, actively maintained in
visual working memory (VWM), guide visual attention. An important question therefore …

Super-human multi-talker speech recognition: A graphical modeling approach

…, SJ Rennie, PA Olsen, TT Kristjansson - Computer Speech & …, 2010 - Elsevier
We present a system hat can separate and recognize the simultaneous speech of two people
recorded in a single-channel. Applied to the Speech Separation Challenge, [Cooke, M., …

[PDF][PDF] Interactive information extraction with constrained conditional random fields

T Kristjansson, A Culotta, P Viola, A McCallum - AAAI, 2004 - cdn.aaai.org
… To avoid an exponential-time search over all possible settings of s, Viterbi stores the
probability of the most likely path at time t which accounts for the first t observations and ends in …

Time limits during visual foraging reveal flexible working memory templates.

T Kristjánsson, IM Thornton… - Journal of Experimental …, 2018 - psycnet.apa.org
… In another series of studies involving both static and dynamic foraging displays, we removed
the penalty that a single error terminated the trial (Thornton, de’Sperati, & Kristjánsson, 2016…