对比匈牙利语静态词嵌入,发现提取方法决定性能上限。
A Comparative Analysis of Static Word Embeddings for Hungarian
- 用多种方法从BERT提取静态嵌入,重点比较X2Static效果。
- 传统FastText在语义任务中表现最佳,而X2Static接近其水平。
- 即使静态使用,上下文模型(如ELMo)仍显著优于纯静态模型。
本文对匈牙利语的多种静态词嵌入进行了全面分析,包括Word2Vec、FastText等传统模型,以及通过不同提取方法从BERT类模型获得的静态嵌入。在内在评估中,采用词语类比任务衡量嵌入捕捉语义与句法关系的能力。结果表明,传统静态嵌入(尤其是FastText)在该任务中表现优异,准确率和均倒数排名(MRR)得分高。在基于BERT的模型中,采用X2Static方法提取的静态嵌入优于去上下文化和聚合方法,接近传统模型表现。在外在评估中,使用双向LSTM进行命名实体识别(NER)和词性标注(POS)任务。结果显示,来自动态模型的嵌入(特别是X2Static方法提取的)优于纯静态嵌入。值得注意的是,ELMo嵌入在两项任务中均达到最高准确率,凸显了即使以静态形式使用,上下文表示仍具优势。研究强调了静态嵌入在匈牙利语自然语言处理中的持续价值,并展示了先进提取方法提升BERT模型实用性的潜力。训练脚本、评估代码、受限词汇表及提取嵌入将公开,支持后续研究与可复现性。
原文摘要 · Abstract (English)
This paper presents a comprehensive analysis of various static word embeddings for Hungarian, including traditional models such as Word2Vec, FastText, as well as static embeddings derived from BERT-based models using different extraction methods. We evaluate these embeddings on both intrinsic and extrinsic tasks to provide a holistic view of their performance. For intrinsic evaluation, we employ a word analogy task, which assesses the embeddings ability to capture semantic and syntactic relationships. Our results indicate that traditional static embeddings, particularly FastText, excel in this task, achieving high accuracy and mean reciprocal rank (MRR) scores. Among the BERT-based models, the X2Static method for extracting static embeddings demonstrates superior performance compared to decontextualized and aggregate methods, approaching the effectiveness of traditional static embeddings. For extrinsic evaluation, we utilize a bidirectional LSTM model to perform Named Entity Recognition (NER) and Part-of-Speech (POS) tagging tasks. The results reveal that embeddings derived from dynamic models, especially those extracted using the X2Static method, outperform purely static embeddings. Notably, ELMo embeddings achieve the highest accuracy in both NER and POS tagging tasks, underscoring the benefits of contextualized representations even when used in a static form. Our findings highlight the continued relevance of static word embeddings in NLP applications and the potential of advanced extraction methods to enhance the utility of BERT-based models. This piece of research contributes to the understanding of embedding performance in the Hungarian language and provides valuable insights for future developments in the field. The training scripts, evaluation codes, restricted vocabulary, and extracted embeddings will be made publicly available to support further research and reproducibility.
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