Evaluating Text Style Transfer Evaluation: Are There Any Reliable Metrics?

• URL: http://arxiv.org/abs/2502.04718v2
• Date: Wed, 23 Apr 2025 04:06:56 GMT
• Title: Evaluating Text Style Transfer Evaluation: Are There Any Reliable Metrics?
• Authors: Sourabrata Mukherjee, Atul Kr. Ojha, John P. McCrae, Ondrej Dusek,
• Abstract summary: Text style transfer (TST) is the task of transforming a text to reflect a particular style while preserving its original content.<n>Using human evaluation is ideal but costly, as is common in other natural language processing (NLP) tasks.<n>In this paper, we examine both set of existing and novel metrics from broader NLP tasks for TST evaluation.
• Score: 9.234136424254261
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Text style transfer (TST) is the task of transforming a text to reflect a particular style while preserving its original content. Evaluating TST outputs is a multidimensional challenge, requiring the assessment of style transfer accuracy, content preservation, and naturalness. Using human evaluation is ideal but costly, as is common in other natural language processing (NLP) tasks, however, automatic metrics for TST have not received as much attention as metrics for, e.g., machine translation or summarization. In this paper, we examine both set of existing and novel metrics from broader NLP tasks for TST evaluation, focusing on two popular subtasks, sentiment transfer and detoxification, in a multilingual context comprising English, Hindi, and Bengali. By conducting meta-evaluation through correlation with human judgments, we demonstrate the effectiveness of these metrics when used individually and in ensembles. Additionally, we investigate the potential of large language models (LLMs) as tools for TST evaluation. Our findings highlight newly applied advanced NLP metrics and LLM-based evaluations provide better insights than existing TST metrics. Our oracle ensemble approaches show even more potential.

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