Author

Rafael da Silva

2 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#machine learning Review Aug 2026

From Sentiment Classification to Actionable and Responsible Feedback: A Scoping Review and Evidence Map of NLP in Student Evaluation of Teaching, 2015-2026

The findings are descriptive and do not support causal claims of progress: technological coexistence and uneven reporting are part of the map, but the A2+ to A3+ cliff is the contribution, not a quality ladder.

Jeffrey D. Eicher, Rafael da Silva · 0 citations

#machine learning Jul 2026

The C-index illusion: discrimination without calibration in published survival models

Three published survival-ML models across three structurally distinct domains are reproduced and a direct test of whether metric choice inverts model preference does not reject, though with limited power given two to three models per domain; the failure mode is better characterized as misplaced confidence in a chosen m...

Rafael da Silva, Danilo Alvares · arXiv.org · 0 citations