Towards Optimizing and Evaluating a Retrieval Augmented QA Chatbot using LLMs with Human in the Loop

• URL: http://arxiv.org/abs/2407.05925v1
• Date: Mon, 8 Jul 2024 13:32:14 GMT
• Title: Towards Optimizing and Evaluating a Retrieval Augmented QA Chatbot using LLMs with Human in the Loop
• Authors: Anum Afzal, Alexander Kowsik, Rajna Fani, Florian Matthes,
• Abstract summary: Large Language Models have found application in mundane and repetitive tasks including Human Resource (HR) support. We developed an HR support chatbots as an efficient and effective tool for addressing employee inquiries. Our experiments and evaluation conclude that GPT-4 outperforms other models and can overcome inconsistencies in data. Through expert analysis, we infer that reference-free evaluation metrics such as G-Eval and demonstrate reliability closely aligned with that of human evaluation.
• Score: 44.51779041553597
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Large Language Models have found application in various mundane and repetitive tasks including Human Resource (HR) support. We worked with the domain experts of SAP SE to develop an HR support chatbot as an efficient and effective tool for addressing employee inquiries. We inserted a human-in-the-loop in various parts of the development cycles such as dataset collection, prompt optimization, and evaluation of generated output. By enhancing the LLM-driven chatbot's response quality and exploring alternative retrieval methods, we have created an efficient, scalable, and flexible tool for HR professionals to address employee inquiries effectively. Our experiments and evaluation conclude that GPT-4 outperforms other models and can overcome inconsistencies in data through internal reasoning capabilities. Additionally, through expert analysis, we infer that reference-free evaluation metrics such as G-Eval and Prometheus demonstrate reliability closely aligned with that of human evaluation.

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