Author

Tunga Güngör

2 papers indexed here

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2026

Diversity-Aware Literary Machine Translation with Multi-Reward Policy Optimization

A novel diversity-aware multi-objective Group Relative Policy Optimization (GRPO) framework that pushes the limits of open-source translation quality while increasing lexical diversity, and demonstrates that policy optimization can effectively steer Large Language Models toward high-quality, lexically diverse outputs.

Zeynep Yirmibesoglu Balal, Tunga Güngör · European Association for Mac... · 0 citations

Open access Sep 2026

Lexical diversity and translation literalness in machine translation: a comparative study of pretrained, fine-tuned, and few-shot approaches

This paper presents a comparative study of neural machine translation (MT) models and large language models, emphasizing translation literalness, lexical diversity, and translation quality. We evaluate open-source neural machine translation (NMT) models, LLaMa 3.1 Instruct, and GPT-4o across nine language pairs in pr...

Zeynep Yirmibeşoğlu Balal, Tunga Güngör · Natural Language Processing · 0 citations