User profiles for S. Westgaard

sjur westgaard

Professor Finance and Managerial Economics NTNU
Verified email at iot.ntnu.no
Cited by 1830

Forecasting volatility of the US oil market

…, H Langeland, P Molnár, S Westgaard - Journal of Banking & …, 2014 - Elsevier
We examine the information content of the CBOE Crude Oil Volatility Index (OVX) when
forecasting realized volatility in the WTI futures market. Additionally, we study whether other …

Default probabilities in a corporate bank portfolio: A logistic model approach

S Westgaard, N Van der Wijst - European journal of operational research, 2001 - Elsevier
Analysis and management of credit risk has taken on an increased importance in recent
years. New regulations force banks and other financial institutions to make a credible effort to …

Capital structure across industries

…, C Winge, S Frydenberg, S Westgaard - International Journal of …, 2008 - Taylor & Francis
… This paper considers the difference in a company’s debt ratio in relation to the industry where
the company belongs. The various industries experience different business environments. …

Analysis and forecasting of electricity price risks with quantile factor models

…, A Andresen, D Chen, S Westgaard - The Energy …, 2016 - journals.sagepub.com
Forecasting quantile and value-at-risk levels for commodity prices is methodologically
challenging because of the distinctive stochastic properties of the price density functions, volatility …

Quality control review: implementing a scientifically based quality control system

JO Westgard, SA Westgard - Annals of clinical biochemistry, 2016 - journals.sagepub.com
… a new graphic tool called ‘Westgard Sigma Rules’. This graphic provides the traditional
flowchart for the application and interpretation of Westgard Rules, but includes a Sigma-scale at …

Modeling the UK electricity price distributions using quantile regression

…, D Bunn, E Kristoffersen, TT Staver, S Westgaard - Energy, 2016 - Elsevier
In this paper we develop fundamental quantile regression models for the UK electricity price
in each trading period. Intraday properties of price risk, as represented by the predictive …

Six sigma quality management system and design of risk-based statistical quality control

JO Westgard, SA Westgard - Clinics in Laboratory Medicine, 2017 - labmed.theclinics.com
… showed how to integrate the classic Westgard approach with the Parvin approach to improve
the SQC design process. They provide nomograms that show the relationship between …

[HTML][HTML] Explainable AI for credit assessment in banks

…, B Melsom, CB Vennerød, S Westgaard - Journal of Risk and …, 2022 - mdpi.com
… The LightGBM model clearly outperforms the bank’s actual credit scoring model (Logistic …
the LightGBM model’s increased predictive performance compared to the bank’s LR model. …

[PDF][PDF] Analytical Sigma metrics: a review of Six Sigma implementation tools for medical laboratories

S Westgard, H Bayat, JO Westgard - Biochemia medica, 2018 - hrcak.srce.hr
… The closer the operating point of a method is to the graph’s origin, or bull’s-eye, the
easier the QC effort is. A method that actually “hits the bull’s-eye” actually does not need to …

Prediction of extreme price occurrences in the German day-ahead electricity market

…, M Prokopczuk, A Sator, S Westgaard - Quantitative …, 2016 - Taylor & Francis
Understanding the mechanisms that drive extreme negative and positive prices in day-ahead
electricity prices is crucial for managing risk and market design. In this paper, we consider …