activity
20162025
most citedCUNI Systems for the WMT22 Czech-Ukrainian Translation Task

4 citations · 8 across the 7 of their papers we have counts for

collaborators

13 papers

cs.CL2025

SemEval-2025 Task 3: Mu-SHROOM, the Multilingual Shared Task on Hallucinations and Related Observable Overgeneration Mistakes

Raúl Vázquez, Timothee Mickus, Elaine Zosa +15

We present the Mu-SHROOM shared task which is focused on detecting hallucinations and other overgeneration mistakes in the output of instruction-tuned large language models (LLMs).…

cs.CL2024

Lexically Grounded Subword Segmentation

Jindřich Libovický, Jindřich Helcl

We present three innovations in tokenization and subword segmentation. First, we propose to use unsupervised morphological analysis with Morfessor as pre-tokenization. Second, we p…

cs.CL2022★ 4 cited

CUNI Systems for the WMT22 Czech-Ukrainian Translation Task

Martin Popel, Jindřich Libovický, Jindřich Helcl

We present Charles University submissions to the WMT22 General Translation Shared Task on Czech-Ukrainian and Ukrainian-Czech machine translation. We present two constrained submis…

cs.CL2022★ 1 cited

Non-Autoregressive Machine Translation: It's Not as Fast as it Seems

Jindřich Helcl, Barry Haddow, Alexandra Birch

Efficient machine translation models are commercially important as they can increase inference speeds, and reduce costs and carbon emissions. Recently, there has been much interest…

cs.CL2021

Survey of Low-Resource Machine Translation

Barry Haddow, Rachel Bawden, Antonio Valerio Miceli Barone +2

We present a survey covering the state of the art in low-resource machine translation research. There are currently around 7000 languages spoken in the world and almost all languag…

cs.CL2019

CUNI System for the WMT19 Robustness Task

Jindřich Helcl, Jindřich Libovický, Martin Popel

We present our submission to the WMT19 Robustness Task. Our baseline system is the Charles University (CUNI) Transformer system trained for the WMT18 shared task on News Translatio…

cs.CL2018★ 3 cited

End-to-End Non-Autoregressive Neural Machine Translation with Connectionist Temporal Classification

Jindřich Libovický, Jindřich Helcl

Autoregressive decoding is the only part of sequence-to-sequence models that prevents them from massive parallelization at inference time. Non-autoregressive models enable the deco…

cs.CL2018

Input Combination Strategies for Multi-Source Transformer Decoder

Jindřich Libovický, Jindřich Helcl, David Mareček

In multi-source sequence-to-sequence tasks, the attention mechanism can be modeled in several ways. This topic has been thoroughly studied on recurrent architectures. In this paper…

cs.CL2018

CUNI System for the WMT18 Multimodal Translation Task

Jindřich Helcl, Jindřich Libovický, Dušan Variš

We present our submission to the WMT18 Multimodal Translation Task. The main feature of our submission is applying a self-attentive network instead of a recurrent neural network. W…

cs.CL2017

Deep Architectures for Neural Machine Translation

Antonio Valerio Miceli Barone, Jindřich Helcl, Rico Sennrich +2

It has been shown that increasing model depth improves the quality of neural machine translation. However, different architectural variants to increase model depth have been propos…

cs.CL2017

CUNI System for the WMT17 Multimodal Translation Task

Jindřich Helcl, Jindřich Libovický

In this paper, we describe our submissions to the WMT17 Multimodal Translation Task. For Task 1 (multimodal translation), our best scoring system is a purely textual neural transla…

cs.CL2017

Attention Strategies for Multi-Source Sequence-to-Sequence Learning

Jindřich Libovický, Jindřich Helcl

Modeling attention in neural multi-source sequence-to-sequence learning remains a relatively unexplored area, despite its usefulness in tasks that incorporate multiple source langu…

cs.CL2016

CUNI System for WMT16 Automatic Post-Editing and Multimodal Translation Tasks

Jindřich Libovický, Jindřich Helcl, Marek Tlustý +2

Neural sequence to sequence learning recently became a very promising paradigm in machine translation, achieving competitive results with statistical phrase-based systems. In this…