这篇论文做了个巴西电商的属性提取系统，用LLM加提示工程比传统NER强不少，还公开了葡萄牙语数据集。
巴西电商产品数据激增，传统命名实体识别(NER)难以处理葡萄牙语描述差异。论文提出AI-PAVE-Br系统，使用大语言模型(LLM)进行产品属性值提取(PAVE)，并发布Golden Set——一个手动注释的葡萄牙语PAVE基准数据集（含实体、品类、子品类）。实验表明，AI-PAVE-Br通过定向提示工程，在PAVE任务上显著超越传统NER基线。该成果为巴西电商提供了可扩展方案，并向NLP社区公开了高质量评测资源。
AI-PAVE-Br: Leveraging Large Language Models for Enhanced Product Attribute Value Extraction through a Golden Set Approach
The explosive growth and complexity of product data within the dynamic Brazilian e-commerce landscape demand robust and specialized methods for structured information extraction. Traditional approaches to Product Attribute Value Extraction (PAVE) often struggle with the linguistic nuances and sheer diversity of product descriptions in Portuguese. To address this critical gap, this paper introduces two major contributions. First, we present AI-PAVEBr, a specialized system engineered with Large Language Models (LLMs) to perform high-accuracy PAVE specifically for Brazilian e-commerce catalogs. Second, to facilitate reproducible research and provide a definitive benchmark, we introduce and share the Golden Set, a new, meticulously curated, and manually annotated dataset for PAVE in Portuguese. We detail the creation process and structure (Entity, Category, Subcategories) of this high-quality reference set. Our experiments conclusively show that AI-PAVE-Br, leveraging targeted prompt engineering, dramatically outperforms conventional Named Entity Recognition (NER) baselines. This work not only delivers a superior, scalable solution for a major non-English market but also enriches the NLP community with a valuable, publicly available resource for future PAVE research.