4 papers
Early Explorations of Recommender Systems for Physical Activity and Well-being
Alan Said
As recommender systems increasingly guide physical actions, often through wearables and coaching tools, new challenges arise around how users interpret, trust, and respond to this…
We're Still Doing It (All) Wrong: Recommender Systems, Fifteen Years Later
Alan Said, Maria Soledad Pera, Michael D. Ekstrand
In 2011, Xavier Amatriain sounded the alarm: recommender systems research was "doing it all wrong" [1]. His critique, rooted in statistical misinterpretation and methodological sho…
On the Reliability of Sampling Strategies in Offline Recommender Evaluation
Bruno L. Pereira, Alan Said, Rodrygo L. T. Santos
Offline evaluation plays a central role in benchmarking recommender systems when online testing is impractical or risky. However, it is susceptible to two key sources of bias: expo…
Recommender Systems for Social Good: The Role of Accountability and Sustainability
Alan Said
This work examines the role of recommender systems in promoting sustainability, social responsibility, and accountability, with a focus on alignment with the United Nations Sustain…