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Register a new userA Comparison of Sentence-Weighting Techniques for NMT
مقارنة بين تقنيات ترقدي الجملة ل NMT
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تراجع الجملة هي تقنية تكييف مجال بسيطة وقوية.نقوم بإجراء تصنيف النطاق لحساب الحوسبة أوزان مع 1) نموذج اللغة Cross Entropy الفرق 2) شبكة عصبية تشفيرية 3) شبكة توتور العصبية العودية.قارنا هذه الأساليب فيما يتعلق بدقة تصنيف المجال ودراسة توزيع الاحتمالات الخلفية.ثم نقوم بتنفيذ تجارب NMT في السيناريو حيث ليس لدينا فورانيا متوازية في المجال وعلى الفورورا المحدودة في المجال.هنا ونحن نستخدم مصنف المجال للاعتقال جمل كوربوس التدريب خارج المجال.هذا يؤدي إلى تحسينات تصل إلى 2.1 بلو للترجمة الألمانية إلى الإنجليزية.
Sentence weighting is a simple and powerful domain adaptation technique. We carry out domain classification for computing sentence weights with 1) language model cross entropy difference 2) a convolutional neural network 3) a Recursive Neural Tensor Network. We compare these approaches with regard to domain classification accuracy and and study the posterior probability distributions. Then we carry out NMT experiments in the scenario where we have no in-domain parallel corpora and and only very limited in-domain monolingual corpora. Here and we use the domain classifier to reweight the sentences of our out-of-domain training corpus. This leads to improvements of up to 2.1 BLEU for German to English translation.
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Low-resource languages can be understood as languages that are more scarce, less studied, less privileged, less commonly taught and for which there are less resources available (Singh, 2008; Cieri et al., 2016; Magueresse et al., 2020). Natural Langu
age Processing (NLP) research and technology mainly focuses on those languages for which there are large data sets available. To illustrate differences in data availability: there are 6 million Wikipedia articles available for English, 2 million for Dutch, and merely 82 thousand for Albanian. The scarce data issue becomes increasingly apparent when large parallel data sets are required for applications such as Neural Machine Translation (NMT). In this work, we investigate to what extent translation between Albanian (SQ) and Dutch (NL) is possible comparing a one-to-one (SQ↔AL) model, a low-resource pivot-based approach (English (EN) as pivot) and a zero-shot translation (ZST) (Johnson et al., 2016; Mattoni et al., 2017) system. From our experiments, it results that the EN-pivot-model outperforms both the direct one-to-one and the ZST model. Since often, small amounts of parallel data are available for low-resource languages or settings, experiments were conducted using small sets of parallel NL↔SQ data. The ZST appeared to be the worst performing models. Even when the available parallel data (NL↔SQ) was added, i.e. in a few-shot setting (FST), it remained the worst performing system according to the automatic (BLEU and TER) and human evaluation.
The explosion of user-generated content (UGC)---e.g. social media posts and comments and and reviews---has motivated the development of NLP applications tailored to these types of informal texts. Prevalent among these applications have been sentiment
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We describe our two NMT systems submitted to the WMT2021 shared task in English-Czech news translation: CUNI-DocTransformer (document-level CUBBITT) and CUNI-Marian-Baselines. We improve the former with a better sentence-segmentation pre-processing a
nd a post-processing for fixing errors in numbers and units. We use the latter for experiments with various backtranslation techniques.
Recently, disentanglement based on a generative adversarial network or a variational autoencoder has significantly advanced the performance of diverse applications in CV and NLP domains. Nevertheless, those models still work on coarse levels in the d
isentanglement of closely related properties, such as syntax and semantics in human languages. This paper introduces a deep decomposable model based on VAE to disentangle syntax and semantics by using total correlation penalties on KL divergences. Notably, we decompose the KL divergence term of the original VAE so that the generated latent variables can be separated in a more clear-cut and interpretable way. Experiments on benchmark datasets show that our proposed model can significantly improve the disentanglement quality between syntactic and semantic representations for semantic similarity tasks and syntactic similarity tasks.
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