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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Oleg Lesota

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Book Open access Sep 2026

Cognitive Biases in Recommender Systems

Psychology and sociology research has revealed a plethora of cognitive biases that describe systematic deviations from rationality and objectivity in humans’ cognitive processes and judgment or collective prejudices of a society that favor one group’s values, norms, and traditions over others. Examples such as confirma...

Markus Schedl, Oleg Lesota, Antonela Tommasel · 0 citations
Book Open access Sep 2026

What Price Fairness? Evaluating Energy – Fairness – Accuracy Trade-off in Recommender Systems

The results show that the green cost of fairness is not uniform, post-processing shifts cost to repeated serving, while in-processing and graph-level methods avoid re-ranking overhead but vary substantially across models, datasets, and hardware.

Abhirup Mitra, Oleg Lesota, Antonela Tommasel · 0 citations
#machine learning Book Open access Sep 2026

Training seeds and model-selection stability in recommender-system evaluation

It is suggested that reporting single-seed results can overstate the stability of recommender system evaluation, and that training seeds should be treated as part of the evaluation protocol.

Juan Manuel Rodríguez, Oleg Lesota, Antonela Tommasel · 0 citations

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