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E. A. Chávez-Urbiola

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#natural language process... Review Oct 2026

Can Language Models Learn When to Abstain? Policy Learning and Calibrated Answer Selection

A useful language model should know when to answer and when to say"I don't know."Can we improve that decision by training the model itself or by training a separate component to check its answers? We study both approaches on Qwen3-14B for factual questions, using a score that rewards correct answers, penalizes mistakes...

Juan R. Terven, Diana-Margarita Córdova-Esparza, R. Gómez et al. · 0 citations

Open access Jul 2026

Changes in the Physicochemical Characteristics and Antioxidant Activity of Saladette-Type Tomato (Solanum lycopersicum L.) Grown in Soil Supplemented with Zeolite

The rapid pace of urbanization, coupled with the variability in climatic conditions, has led to a marked increase in global food demand. Simultaneously, this phenomenon has resulted in a decline in the overall quality of food, highlighting the need to improve existing agricultural production systems. In this context, z...

Jessica Lizbeth Ramirez-Tellez, L. Delgado‐Olivares, Nelly del Socorro Cruz-Cansino et al. · Crops · 0 citations