As a mixed-method study, this study investigated EFL test-takers’ perceptions of paired speaking tests and the role of interlocutor variables (i.e., peer interlocutor’s acquaintanceship, gender, and proficiency level) in pairing in a Cambridge English Language Assessment Open Center. The participants (N = 148), having experienced sitting either live paired speaking tests of Cambridge E...

This work proposes an explainable artificial intelligence approach to help diagnose COVID-19 patients based on blood test and pathogen variables. Two glass-box models, logistic regression boosting machine, two black-box random forest support vector were used assess the disease diagnosis. Shapley additive explanations explain predictions for while models feature importance brought insights into ...