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All Journal Indonesian Journal of Electrical Engineering and Computer Science
Samia Ferhane
Universit´e des Sciences et de la Technologie d’Oran Mohammed Boudiaf

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The persistence of simplicity: why naive temporal baselines can outperform machine learning in short-term cancer incidence forecasting Samia Ferhane; Kies Karima
Indonesian Journal of Electrical Engineering and Computer Science Vol 43, No 1: July 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v43.i1.pp139-147

Abstract

Despite growing enthusiasm for artificial intelligence (AI) in epidemiology, its added value for short-term forecasting remains uncertain. In this method, using CI5plus international cancer registry data (1990–2017) enriched with World Bank urban environment indicators, we benchmark one-year-ahead cancer incidence forecasting under strict temporal validation (train 1990–2012; validation 2013–2015; test 2016–2017). We compare naive temporal base lines (last observation, three-year moving average), classical time-series models (ARIMA, exponential smoothing), machine learning (ridge regression, random forest), and a deep learning model (multilayer perceptron). Model differences are assessed using Diebold–Mariano tests and bootstrap confidence intervals, and robustness is verified through rolling-origin evaluation. Regarding the results, across country–sex–site strata, the last-observation baseline consistently achieved the best test performance, significantly outperforming all competing models (Diebold–Mariano p < 0.05 for all pairwise comparisons on MAE). These results were robust across three rolling-origin windows. Urban environment covariates provided negligible incremental predictive value beyond recent incidence history. In conclusion, for short-horizon cancer incidence forecasting with highly persistent series, strong naive baselines are difficult to beat. Rigorous temporal evaluation, statistical comparison, and appropriate baselines are essential for credible claims of AI benefit in epidemiological forecasting.
Co-Authors Kies Karima