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cs.AI2026
When Is Smaller Greener? Right-Sizing Language Models for Agentic AI
Sajid Siraj, Maria Barbati
AI agents use large language models (LLMs) to plan and act over multiple steps, yet models are usually compared per call rather than per completed task. This paper asks: which mode…
math.OC2026
Preference-Based Estimation of Achievement Scalarising Function Parameters via Ordinal Regression
Maria Barbati, Salvatore Greco
Estimating the parameters of an achievement scalarising function is a challenging task in multiobjective optimisation. Achievement scalarising functions are widely used in several…