Maria Stasimioti


2021

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NoDeeLe: A Novel Deep Learning Schema for Evaluating Neural Machine Translation Systems
Despoina Mouratidis | Maria Stasimioti | Vilelmini Sosoni | Katia Lida Kermanidis
Proceedings of the Translation and Interpreting Technology Online Conference

Due to the wide-spread development of Machine Translation (MT) systems –especially Neural Machine Translation (NMT) systems– MT evaluation, both automatic and human, has become more and more important as it helps us establish how MT systems perform. Yet, automatic evaluation metrics have lagged behind, as the most popular choices (e.g., BLEU, METEOR and ROUGE) may correlate poorly with human judgments. This paper seeks to put to the test an evaluation model based on a novel deep learning schema (NoDeeLe) used to compare two NMT systems on four different text genres, i.e. medical, legal, marketing and literary in the English-Greek language pair. The model utilizes information from the source segments, the MT outputs and the reference translation, as well as the automatic metrics BLEU, METEOR and WER. The proposed schema achieves a strong correlation with human judgment (78% average accuracy for the four texts with the highest accuracy, i.e. 85%, observed in the case of the marketing text), while it outperforms classic machine learning algorithms and automatic metrics.

2020

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Translation vs Post-editing of NMT Output: Insights from the English-Greek language pair
Maria Stasimioti | Vilelmini Sosoni
Proceedings of 1st Workshop on Post-Editing in Modern-Day Translation

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Machine Translation Quality: A comparative evaluation of SMT, NMT and tailored-NMT outputs
Maria Stasimioti | Vilelmini Sosoni | Katia Kermanidis | Despoina Mouratidis
Proceedings of the 22nd Annual Conference of the European Association for Machine Translation

The present study aims to compare three systems: a generic statistical machine translation (SMT), a generic neural machine translation (NMT) and a tailored-NMT system focusing on the English to Greek language pair. The comparison is carried out following a mixed-methods approach, i.e. automatic metrics, as well as side-by-side ranking, adequacy and fluency rating, measurement of actual post editing (PE) effort and human error analysis performed by 16 postgraduate Translation students. The findings reveal a higher score for both the generic NMT and the tailored-NMT outputs as regards automatic metrics and human evaluation metrics, with the tailored-NMT output faring even better than the generic NMT output.

2018

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A Multilingual Wikified Data Set of Educational Material
Iris Hendrickx | Eirini Takoulidou | Thanasis Naskos | Katia Lida Kermanidis | Vilelmini Sosoni | Hugo de Vos | Maria Stasimioti | Menno van Zaanen | Panayota Georgakopoulou | Valia Kordoni | Maja Popovic | Markus Egg | Antal van den Bosch
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

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Translation Crowdsourcing: Creating a Multilingual Corpus of Online Educational Content
Vilelmini Sosoni | Katia Lida Kermanidis | Maria Stasimioti | Thanasis Naskos | Eirini Takoulidou | Menno van Zaanen | Sheila Castilho | Panayota Georgakopoulou | Valia Kordoni | Markus Egg
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

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Improving Machine Translation of Educational Content via Crowdsourcing
Maximiliana Behnke | Antonio Valerio Miceli Barone | Rico Sennrich | Vilelmini Sosoni | Thanasis Naskos | Eirini Takoulidou | Maria Stasimioti | Menno van Zaanen | Sheila Castilho | Federico Gaspari | Panayota Georgakopoulou | Valia Kordoni | Markus Egg | Katia Lida Kermanidis
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)