Evaluating Diversity in Automatic Poetry Generation

Fuente: arXiv
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Autori principali: Chen, Yanran, Gröner, Hannes, Zarrieß, Sina, Eger, Steffen
Natura: Preprint
Pubblicazione: 2024
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author Chen, Yanran
Gröner, Hannes
Zarrieß, Sina
Eger, Steffen
author_facet Chen, Yanran
Gröner, Hannes
Zarrieß, Sina
Eger, Steffen
contents Natural Language Generation (NLG), and more generally generative AI, are among the currently most impactful research fields. Creative NLG, such as automatic poetry generation, is a fascinating niche in this area. While most previous research has focused on forms of the Turing test when evaluating automatic poetry generation -- can humans distinguish between automatic and human generated poetry -- we evaluate the diversity of automatically generated poetry (with a focus on quatrains), by comparing distributions of generated poetry to distributions of human poetry along structural, lexical, semantic and stylistic dimensions, assessing different model types (word vs. character-level, general purpose LLMs vs. poetry-specific models), including the very recent LLaMA3-8B, and types of fine-tuning (conditioned vs. unconditioned). We find that current automatic poetry systems are considerably underdiverse along multiple dimensions -- they often do not rhyme sufficiently, are semantically too uniform and even do not match the length distribution of human poetry. Our experiments reveal, however, that style-conditioning and character-level modeling clearly increases diversity across virtually all dimensions we explore. Our identified limitations may serve as the basis for more genuinely diverse future poetry generation models.
format Preprint
id arxiv_https___arxiv_org_abs_2406_15267
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Evaluating Diversity in Automatic Poetry Generation
Chen, Yanran
Gröner, Hannes
Zarrieß, Sina
Eger, Steffen
Computation and Language
Natural Language Generation (NLG), and more generally generative AI, are among the currently most impactful research fields. Creative NLG, such as automatic poetry generation, is a fascinating niche in this area. While most previous research has focused on forms of the Turing test when evaluating automatic poetry generation -- can humans distinguish between automatic and human generated poetry -- we evaluate the diversity of automatically generated poetry (with a focus on quatrains), by comparing distributions of generated poetry to distributions of human poetry along structural, lexical, semantic and stylistic dimensions, assessing different model types (word vs. character-level, general purpose LLMs vs. poetry-specific models), including the very recent LLaMA3-8B, and types of fine-tuning (conditioned vs. unconditioned). We find that current automatic poetry systems are considerably underdiverse along multiple dimensions -- they often do not rhyme sufficiently, are semantically too uniform and even do not match the length distribution of human poetry. Our experiments reveal, however, that style-conditioning and character-level modeling clearly increases diversity across virtually all dimensions we explore. Our identified limitations may serve as the basis for more genuinely diverse future poetry generation models.
title Evaluating Diversity in Automatic Poetry Generation
topic Computation and Language
url https://arxiv.org/abs/2406.15267