Socio-Emotional Response Generation: A Human Evaluation Protocol for LLM-Based Conversational Systems

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Main Authors: Vanel, Lorraine, Vela, Ariel R. Ramos, Yacoubi, Alya, Clavel, Chloé
Format: Preprint
Published: 2024
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author Vanel, Lorraine
Vela, Ariel R. Ramos
Yacoubi, Alya
Clavel, Chloé
author_facet Vanel, Lorraine
Vela, Ariel R. Ramos
Yacoubi, Alya
Clavel, Chloé
contents Conversational systems are now capable of producing impressive and generally relevant responses. However, we have no visibility nor control of the socio-emotional strategies behind state-of-the-art Large Language Models (LLMs), which poses a problem in terms of their transparency and thus their trustworthiness for critical applications. Another issue is that current automated metrics are not able to properly evaluate the quality of generated responses beyond the dataset's ground truth. In this paper, we propose a neural architecture that includes an intermediate step in planning socio-emotional strategies before response generation. We compare the performance of open-source baseline LLMs to the outputs of these same models augmented with our planning module. We also contrast the outputs obtained from automated metrics and evaluation results provided by human annotators. We describe a novel evaluation protocol that includes a coarse-grained consistency evaluation, as well as a finer-grained annotation of the responses on various social and emotional criteria. Our study shows that predicting a sequence of expected strategy labels and using this sequence to generate a response yields better results than a direct end-to-end generation scheme. It also highlights the divergences and the limits of current evaluation metrics for generated content. The code for the annotation platform and the annotated data are made publicly available for the evaluation of future models.
format Preprint
id arxiv_https___arxiv_org_abs_2412_04492
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Socio-Emotional Response Generation: A Human Evaluation Protocol for LLM-Based Conversational Systems
Vanel, Lorraine
Vela, Ariel R. Ramos
Yacoubi, Alya
Clavel, Chloé
Computation and Language
Artificial Intelligence
Human-Computer Interaction
Social and Information Networks
Conversational systems are now capable of producing impressive and generally relevant responses. However, we have no visibility nor control of the socio-emotional strategies behind state-of-the-art Large Language Models (LLMs), which poses a problem in terms of their transparency and thus their trustworthiness for critical applications. Another issue is that current automated metrics are not able to properly evaluate the quality of generated responses beyond the dataset's ground truth. In this paper, we propose a neural architecture that includes an intermediate step in planning socio-emotional strategies before response generation. We compare the performance of open-source baseline LLMs to the outputs of these same models augmented with our planning module. We also contrast the outputs obtained from automated metrics and evaluation results provided by human annotators. We describe a novel evaluation protocol that includes a coarse-grained consistency evaluation, as well as a finer-grained annotation of the responses on various social and emotional criteria. Our study shows that predicting a sequence of expected strategy labels and using this sequence to generate a response yields better results than a direct end-to-end generation scheme. It also highlights the divergences and the limits of current evaluation metrics for generated content. The code for the annotation platform and the annotated data are made publicly available for the evaluation of future models.
title Socio-Emotional Response Generation: A Human Evaluation Protocol for LLM-Based Conversational Systems
topic Computation and Language
Artificial Intelligence
Human-Computer Interaction
Social and Information Networks
url https://arxiv.org/abs/2412.04492