SelectLLM: Query-Aware Efficient Selection Algorithm for Large Language Models

• URL: http://arxiv.org/abs/2408.08545v1
• Date: Fri, 16 Aug 2024 06:11:21 GMT
• Title: SelectLLM: Query-Aware Efficient Selection Algorithm for Large Language Models
• Authors: Kaushal Kumar Maurya, KV Aditya Srivatsa, Ekaterina Kochmar,
• Abstract summary: Large language models (LLMs) have gained increased popularity due to their remarkable success across various tasks. However, individual LLMs have limitations when applied to complex tasks because of such factors as training biases, model sizes, and the datasets used. We introduce SelectLLM, a novel algorithm that directs input queries to the most suitable subset of LLMs from a large pool.
• Score: 8.558834738072363
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Large language models (LLMs) have gained increased popularity due to their remarkable success across various tasks, which has led to the active development of a large set of diverse LLMs. However, individual LLMs have limitations when applied to complex tasks because of such factors as training biases, model sizes, and the datasets used. A promising approach is to efficiently harness the diverse capabilities of LLMs to overcome these individual limitations. Towards this goal, we introduce a novel LLM selection algorithm called SelectLLM. This algorithm directs input queries to the most suitable subset of LLMs from a large pool, ensuring they collectively provide the correct response efficiently. SelectLLM uses a multi-label classifier, utilizing the classifier's predictions and confidence scores to design optimal policies for selecting an optimal, query-aware, and lightweight subset of LLMs. Our findings show that the proposed model outperforms individual LLMs and achieves competitive performance compared to similarly sized, computationally expensive top-performing LLM subsets. Specifically, with a similarly sized top-performing LLM subset, we achieve a significant reduction in latency on two standard reasoning benchmarks: 13% lower latency for GSM8K and 70% lower latency for MMLU. Additionally, we conduct comprehensive analyses and ablation studies, which validate the robustness of the proposed model.

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