用Transformer改进文本压缩,实现更高压缩比和更优还原质量。
An Enhanced Text Compression Approach Using Transformer-based Language Models
- 结合LZW预处理与Transformer模型,提升压缩效率。
- 在BookCorpus等数据集上压缩比达11.42~13.38,优于现有方法。
- 适用于需要高效存储与高保真还原的文本系统。
文本压缩在保持关键信息的同时减小数据体积,缓解存储、带宽与计算效率的限制。尽管英文文本数据量持续增长,但将无损压缩技术与基于Transformer的文本解压结合的研究仍很少见。此前研究未能有效优化基于Transformer的方法,且缺乏高效的预处理与无损压缩集成方案。本文提出一种名为RejuvenateForme的Transformer解压方法,通过引入新型预处理技术与无损压缩算法,解决了上述问题。其采用的精细预处理结合Lempel-Ziv-Welch算法,在BookCorpus、EN-DE和EN-FR数据集上分别达到12.57、13.38和11.42的压缩比,显著优于深度学习与传统方法。同时,RejuvenateForme在EN-DE、EN-FR和BookCorpus上的BLEU得分分别为27.31、25.78和50.45,表现出卓越的还原性能。相比之下,预训练的T5-Small模型也展现出优于先前最优模型的表现。
原文摘要 · Abstract (English)
Text compression shrinks textual data while keeping crucial information, eradicating constraints on storage, bandwidth, and computational efficacy. The integration of lossless compression techniques with transformer-based text decompression has received negligible attention, despite the increasing volume of English text data in communication. The primary barrier in advancing text compression and restoration involves optimizing transformer-based approaches with efficient pre-processing and integrating lossless compression algorithms, that remained unresolved in the prior attempts. Here, we propose a transformer-based method named RejuvenateForme for text decompression, addressing prior issues by harnessing a new pre-processing technique and a lossless compression method. Our meticulous pre-processing technique incorporating the Lempel-Ziv-Welch algorithm achieves compression ratios of 12.57, 13.38, and 11.42 on the BookCorpus, EN-DE, and EN-FR corpora, thus showing state-of-the-art compression ratios compared to other deep learning and traditional approaches. Furthermore, the RejuvenateForme achieves a BLEU score of 27.31, 25.78, and 50.45 on the EN-DE, EN-FR, and BookCorpus corpora, showcasing its comprehensive efficacy. In contrast, the pre-trained T5-Small exhibits better performance over prior state-of-the-art models.
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