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C. D. Correa-Álvarez

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Open access Aug 2026

Recovering Latent Association from Likert-Type Responses: A Monte Carlo Comparison of Pearson, Spearman, Kendall, and Polychoric Correlations Under Discretization, Response Perturbation, and Gumbel-Copula Dependence

Likert-type responses are often analyzed as continuous scores, although their categories are ordered rather than truly metric. This study uses Monte Carlo simulation to examine how ordinal discretization, response perturbation, and non-Gaussian dependence affect four association estimators: Pearson correlation, Spearma...

Diógenes de Jesus Ramirez-Ramirez, O. Bru-Cordero, C. D. Correa-Álvarez · 0 citations
Review Open access Sep 2026

Environmental Degradation and Sustainability Governance in Colombia: An Integrative Review

Environmental degradation in Colombia is often studied through separate sectoral lenses, although air pollution, emerging water contaminants, urban noise, mining-related soil contamination, artisanal-mining exposure, and material throughput arise from overlapping institutional and economic conditions. This review compa...

Efraín de Jesús Hernández Buelvas, Gladis Mercedes Canchila Paternina, Fermina Vasquez Osorio et al. · 0 citations
Open access Jul 2026

Rare-Event Road-Traffic Fatality Prediction: A Reproducible Machine-Learning Benchmark with Time-Aware Validation, Calibration, and Interpretability

This study develops a reproducible machine-learning benchmark for rare-event road-traffic fatality prediction using an urban incident registry from Medellín, Colombia and clarifies the limits of registry-based prediction when exposure, traffic-flow, roadway, infrastructure, weather, and post-crash response variables ar...

Erika María López-López, O. Bru-Cordero, C. D. Correa-Álvarez · 0 citations

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