Abstract
In recent years neural language models (LMs) have set the state-of-the-art performance for several benchmarking datasets. While the reasons for their success and their computational demand are well-documented, a comparison between neural models and more recent developments in n-gram models is neglected. In this paper, we examine the recent progress in n-gram literature, running experiments on 50 languages covering all morphological language families. Experimental results illustrate that a simple extension of Modified Kneser-Ney outperforms an lstm language model on 42 languages while a word-level Bayesian n-gram LM (Shareghi et al., 2017) outperforms the character-aware neural model (Kim et al., 2016) on average across all languages, and its extension which explicitly injects linguistic knowledge (Gerz et al., 2018) on 8 languages. Further experiments on larger Europarl datasets for 3 languages indicate that neural architectures are able to outperform computationally much cheaper n-gram models: n-gram training is up to 15,000x quicker. Our experiments illustrate that standalone n-gram models lend themselves as natural choices for resource-lean or morphologically rich languages, while the recent progress has significantly improved their accuracy.- Anthology ID:
- N19-1417
- Volume:
- Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers)
- Month:
- June
- Year:
- 2019
- Address:
- Minneapolis, Minnesota
- Venue:
- NAACL
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 4113–4118
- Language:
- URL:
- https://aclanthology.org/N19-1417
- DOI:
- 10.18653/v1/N19-1417
- Cite (ACL):
- Ehsan Shareghi, Daniela Gerz, Ivan Vulić, and Anna Korhonen. 2019. Show Some Love to Your n-grams: A Bit of Progress and Stronger n-gram Language Modeling Baselines. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), pages 4113–4118, Minneapolis, Minnesota. Association for Computational Linguistics.
- Cite (Informal):
- Show Some Love to Your n-grams: A Bit of Progress and Stronger n-gram Language Modeling Baselines (Shareghi et al., NAACL 2019)
- PDF:
- https://preview.aclanthology.org/remove-xml-comments/N19-1417.pdf