Revisiting Prompt Optimization with Large Reasoning Models-A Case Study on Event Extraction

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Autori principali: Srivastava, Saurabh, Yao, Ziyu
Natura: Preprint
Pubblicazione: 2025
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author Srivastava, Saurabh
Yao, Ziyu
author_facet Srivastava, Saurabh
Yao, Ziyu
contents Large Reasoning Models (LRMs) such as DeepSeek-R1 and OpenAI o1 have demonstrated remarkable capabilities in various reasoning tasks. Their strong capability to generate and reason over intermediate thoughts has also led to arguments that they may no longer require extensive prompt engineering or optimization to interpret human instructions and produce accurate outputs. In this work, we aim to systematically study this open question, using the structured task of event extraction for a case study. We experimented with two LRMs (DeepSeek-R1 and o1) and two general-purpose Large Language Models (LLMs) (GPT-4o and GPT-4.5), when they were used as task models or prompt optimizers. Our results show that on tasks as complicated as event extraction, LRMs as task models still benefit from prompt optimization, and that using LRMs as prompt optimizers yields more effective prompts. Our finding also generalizes to tasks beyond event extraction. Finally, we provide an error analysis of common errors made by LRMs and highlight the stability and consistency of LRMs in refining task instructions and event guidelines.
format Preprint
id arxiv_https___arxiv_org_abs_2504_07357
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Revisiting Prompt Optimization with Large Reasoning Models-A Case Study on Event Extraction
Srivastava, Saurabh
Yao, Ziyu
Computation and Language
Large Reasoning Models (LRMs) such as DeepSeek-R1 and OpenAI o1 have demonstrated remarkable capabilities in various reasoning tasks. Their strong capability to generate and reason over intermediate thoughts has also led to arguments that they may no longer require extensive prompt engineering or optimization to interpret human instructions and produce accurate outputs. In this work, we aim to systematically study this open question, using the structured task of event extraction for a case study. We experimented with two LRMs (DeepSeek-R1 and o1) and two general-purpose Large Language Models (LLMs) (GPT-4o and GPT-4.5), when they were used as task models or prompt optimizers. Our results show that on tasks as complicated as event extraction, LRMs as task models still benefit from prompt optimization, and that using LRMs as prompt optimizers yields more effective prompts. Our finding also generalizes to tasks beyond event extraction. Finally, we provide an error analysis of common errors made by LRMs and highlight the stability and consistency of LRMs in refining task instructions and event guidelines.
title Revisiting Prompt Optimization with Large Reasoning Models-A Case Study on Event Extraction
topic Computation and Language
url https://arxiv.org/abs/2504.07357