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Poster
in
Affinity Workshop: Tiny Papers Poster Session 8

A Bi-Objective ε-Constrained Framework for Quality-Cost Optimization in Language Model Ensembles

Aditya Singh · Aditi Singla · Kanishk Kukreja

#267

Abstract:

We propose an ensembling framework that uses diverse open-sourced Large Language Models (LLMs) to achieve high response quality while maintaining cost efficiency. We formulate a bi-objective optimization problem to represent the quality-cost tradeoff and then introduce an additional budget constraint that reduces the problem to a straightforward 0/1 knapsack problem. We empirically demonstrate that our framework outperforms the existing ensembling approaches in response quality while significantly reducing costs.

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