activity
20222026
most citedSplit Conformal Prediction and Non-Exchangeable Data

4 citations · 5 across the 9 of their papers we have counts for

collaborators

12 papers

stat.ML2026

ReCIRC: Rectified Conformal Risk Control

Bruno Marcondes e Resende, Helton Graziadei, Thiago Rodrigo Ramos +1

Many applications of black-box predictive models require controlling task-relevant error rates, such as missed lesion pixels in segmentation or missed labels in multilabel classifi…

stat.ML2026

Learning Conditional Expectation Operators via Functional Newton Updates

Thiago Ramos, Alek Fröhlich, Daniel Perazzo +1

We introduce the Functional Spectral-Newton Method (FSNM) for learning the leading singular structure of a conditional expectation operator without fixing a basis or reproducing ke…

stat.ML2026

Conformal Prediction via Transported Beta Laws

Thiago R. Ramos, Helton Graziadei, Luben M. C. Cabezas

Split conformal prediction provides finite-sample marginal coverage under exchangeability, but this guarantee averages over the random calibration sample. We study instead the law…

stat.ML2026

LOCUS: A Distribution-Free Loss-Quantile Score for Risk-Aware Predictions

Matheus Barreto, Mário de Castro, Thiago R. Ramos +2

Modern machine learning models can be accurate on average yet still make mistakes that dominate deployment cost. We introduce Locus, a distribution-free wrapper that produces a per…

stat.ML2026

LoBoost: Fast Model-Native Local Conformal Prediction for Gradient-Boosted Trees

Vagner Santos, Victor Coscrato, Luben Cabezas +2

Gradient-boosted decision trees are among the strongest off-the-shelf predictors for tabular regression, but point predictions alone do not quantify uncertainty. Conformal predicti…

cs.DB2025

From Patents to Dataset: Scraping for Oxide Glass Compositions and Properties

Gustavo Laranja Thomaello, Thomaz Yeiden Busnardo Aguena, Eric Trevelato Costa +4

In this work, we present web scraping techniques to extract in- formation from patent tables, clean and structure them for future use in predictive machine learning models to devel…

stat.ML2025

Conformal Prediction for Compositional Data

Lucas P. Amaral, Luben M. C. Cabezas, Thiago R. Ramos +1

Dirichlet regression models are suitable for compositional data, in which the response variable represents proportions that sum to one. However, there are still no well-established…

stat.ML2025

CP4SBI: Local Conformal Calibration of Credible Sets in Simulation-Based Inference

Luben M. C. Cabezas, Vagner S. Santos, Thiago R. Ramos +2

Current experimental scientists have been increasingly relying on simulation-based inference (SBI) to invert complex non-linear models with intractable likelihoods. However, poster…

stat.ML2025★ 1 cited

Epistemic Uncertainty in Conformal Scores: A Unified Approach

Luben M. C. Cabezas, Vagner S. Santos, Thiago R. Ramos +1

Conformal prediction methods create prediction bands with distribution-free guarantees but do not explicitly capture epistemic uncertainty, which can lead to overconfident predicti…

stat.ME2024

Conformal Calibration of Statistical Confidence Sets

Luben M. C. Cabezas, Guilherme P. Soares, Thiago R. Ramos +2

Constructing valid confidence sets is a crucial task in statistical inference, yet traditional methods often face challenges when dealing with complex models or limited observed sa…

cs.LG2024

PersonalizedUS: Interpretable Breast Cancer Risk Assessment with Local Coverage Uncertainty Quantification

Alek Fröhlich, Thiago Ramos, Gustavo Cabello +3

Correctly assessing the malignancy of breast lesions identified during ultrasound examinations is crucial for effective clinical decision-making. However, the current "golden stand…

math.ST2022★ 4 cited

Split Conformal Prediction and Non-Exchangeable Data

Roberto I. Oliveira, Paulo Orenstein, Thiago Ramos +1

Split conformal prediction (CP) is arguably the most popular CP method for uncertainty quantification, enjoying both academic interest and widespread deployment. However, the origi…