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Showing posts with label bias. Show all posts
Showing posts with label bias. Show all posts

Friday, February 3, 2023

The future of standardised assessment: Validity and trust in algorithms for assessment and scoring [Scholarly Article - European Journal of Education, January 2023]

Title: 
The future of standardised assessment: Validity and trust in algorithms for assessment and scoring

Author:
Cesare Aloisi

Published:
European Journal of Education, 17 January 2023

Abstract:
This article considers the challenges of using artificial intelligence (AI) and machine learning (ML) to assist high-stakes standardised assessment. It focuses on the detrimental effect that even state-of-the-art AI and ML systems could have on the validity of national exams of secondary education, and how lower validity would negatively affect trust in the system. To reach this conclusion, three unresolved issues in AI (unreliability, low explainability and bias) are addressed, to show how each of them would compromise the interpretations and uses of exam results (i.e., exam validity). Furthermore, the article relates validity to trust, and specifically to the ABI+ model of trust. Evidence gathered as part of exam validation supports each of the four trust-enabling components of the ABI+ model (ability, benevolence, integrity and predictability). It is argued, therefore, that the three AI barriers to exam validity limit the extent to which an AI-assisted exam system could be trusted. The article suggests that addressing the issues of AI unreliability, low explainability and bias should be sufficient to put AI-assisted exams on par with traditional ones, but might not go as far as fully reassure the public. To achieve this, it is argued that changes to the quality assurance mechanisms of the exam system will be required. This may involve, for example, integrating principled AI frameworks in assessment policy and regulation.
 

Wednesday, September 9, 2020

Scholarly Article [Biochemia Medica, June 2020] - The top-down approach to measurement uncertainty: which formula should we use in laboratory medicine?

Title:
The top-down approach to measurement uncertainty: which formula should we use in laboratory medicine?

Authors:
Flávia Martinello, Nada Snoj, Milan Skitek & Aleš Jerin

Published:
Biochemia Medica, Volume 30, Issue 2 (June 2020)
https://www.biochemia-medica.com/en/journal/30/2/10.11613/BM.2020.020101

Abstract introduction:
By quantifying the measurement uncertainty (MU), both the laboratory and the physician can have an objective estimate of the results’ quality. There is significant flexibility on how to determine the MU in laboratory medicine and different approaches have been proposed by Nordtest, Eurolab and Cofrac to obtain the data and apply them in formulas. The purpose of this study is to compare three different top-down approaches for the estimation of the MU and to suggest which of these approaches could be the most suitable choice for routine use in clinical laboratories.