Does Writing with Language Models Reduce Content Diversity?

Fuente: arXiv
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Main Authors: Padmakumar, Vishakh, He, He
Format: Preprint
Published: 2023
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author Padmakumar, Vishakh
He, He
author_facet Padmakumar, Vishakh
He, He
contents Large language models (LLMs) have led to a surge in collaborative writing with model assistance. As different users incorporate suggestions from the same model, there is a risk of decreased diversity in the produced content, potentially limiting diverse perspectives in public discourse. In this work, we measure the impact of co-writing on diversity via a controlled experiment, where users write argumentative essays in three setups -- using a base LLM (GPT3), a feedback-tuned LLM (InstructGPT), and writing without model help. We develop a set of diversity metrics and find that writing with InstructGPT (but not the GPT3) results in a statistically significant reduction in diversity. Specifically, it increases the similarity between the writings of different authors and reduces the overall lexical and content diversity. We additionally find that this effect is mainly attributable to InstructGPT contributing less diverse text to co-written essays. In contrast, the user-contributed text remains unaffected by model collaboration. This suggests that the recent improvement in generation quality from adapting models to human feedback might come at the cost of more homogeneous and less diverse content.
format Preprint
id arxiv_https___arxiv_org_abs_2309_05196
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Does Writing with Language Models Reduce Content Diversity?
Padmakumar, Vishakh
He, He
Computation and Language
Computers and Society
Human-Computer Interaction
Machine Learning
Large language models (LLMs) have led to a surge in collaborative writing with model assistance. As different users incorporate suggestions from the same model, there is a risk of decreased diversity in the produced content, potentially limiting diverse perspectives in public discourse. In this work, we measure the impact of co-writing on diversity via a controlled experiment, where users write argumentative essays in three setups -- using a base LLM (GPT3), a feedback-tuned LLM (InstructGPT), and writing without model help. We develop a set of diversity metrics and find that writing with InstructGPT (but not the GPT3) results in a statistically significant reduction in diversity. Specifically, it increases the similarity between the writings of different authors and reduces the overall lexical and content diversity. We additionally find that this effect is mainly attributable to InstructGPT contributing less diverse text to co-written essays. In contrast, the user-contributed text remains unaffected by model collaboration. This suggests that the recent improvement in generation quality from adapting models to human feedback might come at the cost of more homogeneous and less diverse content.
title Does Writing with Language Models Reduce Content Diversity?
topic Computation and Language
Computers and Society
Human-Computer Interaction
Machine Learning
url https://arxiv.org/abs/2309.05196