User profiles for "author:Katie Ovens"

Katie Ovens

University of Calgary
Verified email at ucalgary.ca
Cited by 689

[HTML][HTML] Gene set analysis: challenges, opportunities, and future research

F Maleki, K Ovens, DJ Hogan, AJ Kusalik - Frontiers in genetics, 2020 - frontiersin.org
Gene set analysis methods are widely used to provide insight into high-throughput gene
expression data. There are many gene set analysis methods available. These methods rely …

Machine learning algorithm validation: from essentials to advanced applications and implications for regulatory certification and deployment

F Maleki, N Muthukrishnan, K Ovens… - Neuroimaging …, 2020 - neuroimaging.theclinics.com
With growing interest in machine learning (ML), it is essential to understand the
methodologies used for evaluating ML models to achieve reproducible solutions that can be …

Brief history of artificial intelligence

N Muthukrishnan, F Maleki, K Ovens… - … Clinics of North …, 2020 - books.google.com
Artificial intelligence (AI) is revolutionizing many industries by performing tasks that typically
require human intelligence to solve. AI contributes to complex scientific and engineering …

[HTML][HTML] Comparative analyses of gene co-expression networks: Implementations and applications in the study of evolution

K Ovens, BF Eames, I McQuillan - Frontiers in Genetics, 2021 - frontiersin.org
Similarities and differences in the associations of biological entities among species can
provide us with a better understanding of evolutionary relationships. Often the evolution of …

Generalizability of machine learning models: Quantitative evaluation of three methodological pitfalls

F Maleki, K Ovens, R Gupta, C Reinhold… - Radiology: Artificial …, 2022 - pubs.rsna.org
Purpose To investigate the impact of the following three methodological pitfalls on model
generalizability:(a) violation of the independence assumption,(b) model evaluation with an …

[HTML][HTML] Overview of machine learning part 1: fundamentals and classic approaches

F Maleki, K Ovens, K Najafian… - Neuroimaging …, 2020 - neuroimaging.theclinics.com
As health data and computer power become increasingly available, the main challenge is to
gain actionable insight from these data. Machine learning (ML) methods have proved to be a …

[HTML][HTML] Size matters: how sample size affects the reproducibility and specificity of gene set analysis

F Maleki, K Ovens, I McQuillan, AJ Kusalik - Human genomics, 2019 - Springer
Background Gene set analysis is a well-established approach for interpretation of data from
high-throughput gene expression studies. Achieving reproducible results is an essential …

[HTML][HTML] How useful are delta checks in the 21st century? A stochastic-dynamic model of specimen mix-up and detection

K Ovens, C Naugler - Journal of Pathology Informatics, 2012 - Elsevier
Introduction: Delta checks use two specimen test results taken in succession in order to
detect test result changes greater than expected physiological variation. One of the most …

[HTML][HTML] Juxtapose: a gene-embedding approach for comparing co-expression networks

K Ovens, F Maleki, BF Eames, I McQuillan - BMC bioinformatics, 2021 - Springer
Background Gene co-expression networks (GCNs) are not easily comparable due to their
complex structure. In this paper, we propose a tool, Juxtapose, together with similarity …

[HTML][HTML] Proteoglycan inhibition of canonical BMP-dependent cartilage maturation delays endochondral ossification

E Koosha, CTA Brenna, AM Ashique, N Jain… - …, 2024 - journals.biologists.com
During endochondral ossification, chondrocytes secrete a proteoglycan (PG)-rich
extracellular matrix that can inhibit the process of cartilage maturation, including expression …